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Diffstat (limited to 'gnu/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp')
| -rw-r--r-- | gnu/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp | 9860 |
1 files changed, 0 insertions, 9860 deletions
diff --git a/gnu/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp b/gnu/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp deleted file mode 100644 index 20eb0b29f42..00000000000 --- a/gnu/llvm/tools/clang/lib/CodeGen/CGOpenMPRuntime.cpp +++ /dev/null @@ -1,9860 +0,0 @@ -//===----- CGOpenMPRuntime.cpp - Interface to OpenMP Runtimes -------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This provides a class for OpenMP runtime code generation. -// -//===----------------------------------------------------------------------===// - -#include "CGCXXABI.h" -#include "CGCleanup.h" -#include "CGOpenMPRuntime.h" -#include "CGRecordLayout.h" -#include "CodeGenFunction.h" -#include "clang/CodeGen/ConstantInitBuilder.h" -#include "clang/AST/Decl.h" -#include "clang/AST/StmtOpenMP.h" -#include "clang/Basic/BitmaskEnum.h" -#include "llvm/ADT/ArrayRef.h" -#include "llvm/Bitcode/BitcodeReader.h" -#include "llvm/IR/CallSite.h" -#include "llvm/IR/DerivedTypes.h" -#include "llvm/IR/GlobalValue.h" -#include "llvm/IR/Value.h" -#include "llvm/Support/Format.h" -#include "llvm/Support/raw_ostream.h" -#include <cassert> - -using namespace clang; -using namespace CodeGen; - -namespace { -/// Base class for handling code generation inside OpenMP regions. -class CGOpenMPRegionInfo : public CodeGenFunction::CGCapturedStmtInfo { -public: - /// Kinds of OpenMP regions used in codegen. - enum CGOpenMPRegionKind { - /// Region with outlined function for standalone 'parallel' - /// directive. - ParallelOutlinedRegion, - /// Region with outlined function for standalone 'task' directive. - TaskOutlinedRegion, - /// Region for constructs that do not require function outlining, - /// like 'for', 'sections', 'atomic' etc. directives. - InlinedRegion, - /// Region with outlined function for standalone 'target' directive. - TargetRegion, - }; - - CGOpenMPRegionInfo(const CapturedStmt &CS, - const CGOpenMPRegionKind RegionKind, - const RegionCodeGenTy &CodeGen, OpenMPDirectiveKind Kind, - bool HasCancel) - : CGCapturedStmtInfo(CS, CR_OpenMP), RegionKind(RegionKind), - CodeGen(CodeGen), Kind(Kind), HasCancel(HasCancel) {} - - CGOpenMPRegionInfo(const CGOpenMPRegionKind RegionKind, - const RegionCodeGenTy &CodeGen, OpenMPDirectiveKind Kind, - bool HasCancel) - : CGCapturedStmtInfo(CR_OpenMP), RegionKind(RegionKind), CodeGen(CodeGen), - Kind(Kind), HasCancel(HasCancel) {} - - /// Get a variable or parameter for storing global thread id - /// inside OpenMP construct. - virtual const VarDecl *getThreadIDVariable() const = 0; - - /// Emit the captured statement body. - void EmitBody(CodeGenFunction &CGF, const Stmt *S) override; - - /// Get an LValue for the current ThreadID variable. - /// \return LValue for thread id variable. This LValue always has type int32*. - virtual LValue getThreadIDVariableLValue(CodeGenFunction &CGF); - - virtual void emitUntiedSwitch(CodeGenFunction & /*CGF*/) {} - - CGOpenMPRegionKind getRegionKind() const { return RegionKind; } - - OpenMPDirectiveKind getDirectiveKind() const { return Kind; } - - bool hasCancel() const { return HasCancel; } - - static bool classof(const CGCapturedStmtInfo *Info) { - return Info->getKind() == CR_OpenMP; - } - - ~CGOpenMPRegionInfo() override = default; - -protected: - CGOpenMPRegionKind RegionKind; - RegionCodeGenTy CodeGen; - OpenMPDirectiveKind Kind; - bool HasCancel; -}; - -/// API for captured statement code generation in OpenMP constructs. -class CGOpenMPOutlinedRegionInfo final : public CGOpenMPRegionInfo { -public: - CGOpenMPOutlinedRegionInfo(const CapturedStmt &CS, const VarDecl *ThreadIDVar, - const RegionCodeGenTy &CodeGen, - OpenMPDirectiveKind Kind, bool HasCancel, - StringRef HelperName) - : CGOpenMPRegionInfo(CS, ParallelOutlinedRegion, CodeGen, Kind, - HasCancel), - ThreadIDVar(ThreadIDVar), HelperName(HelperName) { - assert(ThreadIDVar != nullptr && "No ThreadID in OpenMP region."); - } - - /// Get a variable or parameter for storing global thread id - /// inside OpenMP construct. - const VarDecl *getThreadIDVariable() const override { return ThreadIDVar; } - - /// Get the name of the capture helper. - StringRef getHelperName() const override { return HelperName; } - - static bool classof(const CGCapturedStmtInfo *Info) { - return CGOpenMPRegionInfo::classof(Info) && - cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == - ParallelOutlinedRegion; - } - -private: - /// A variable or parameter storing global thread id for OpenMP - /// constructs. - const VarDecl *ThreadIDVar; - StringRef HelperName; -}; - -/// API for captured statement code generation in OpenMP constructs. -class CGOpenMPTaskOutlinedRegionInfo final : public CGOpenMPRegionInfo { -public: - class UntiedTaskActionTy final : public PrePostActionTy { - bool Untied; - const VarDecl *PartIDVar; - const RegionCodeGenTy UntiedCodeGen; - llvm::SwitchInst *UntiedSwitch = nullptr; - - public: - UntiedTaskActionTy(bool Tied, const VarDecl *PartIDVar, - const RegionCodeGenTy &UntiedCodeGen) - : Untied(!Tied), PartIDVar(PartIDVar), UntiedCodeGen(UntiedCodeGen) {} - void Enter(CodeGenFunction &CGF) override { - if (Untied) { - // Emit task switching point. - LValue PartIdLVal = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(PartIDVar), - PartIDVar->getType()->castAs<PointerType>()); - llvm::Value *Res = - CGF.EmitLoadOfScalar(PartIdLVal, PartIDVar->getLocation()); - llvm::BasicBlock *DoneBB = CGF.createBasicBlock(".untied.done."); - UntiedSwitch = CGF.Builder.CreateSwitch(Res, DoneBB); - CGF.EmitBlock(DoneBB); - CGF.EmitBranchThroughCleanup(CGF.ReturnBlock); - CGF.EmitBlock(CGF.createBasicBlock(".untied.jmp.")); - UntiedSwitch->addCase(CGF.Builder.getInt32(0), - CGF.Builder.GetInsertBlock()); - emitUntiedSwitch(CGF); - } - } - void emitUntiedSwitch(CodeGenFunction &CGF) const { - if (Untied) { - LValue PartIdLVal = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(PartIDVar), - PartIDVar->getType()->castAs<PointerType>()); - CGF.EmitStoreOfScalar(CGF.Builder.getInt32(UntiedSwitch->getNumCases()), - PartIdLVal); - UntiedCodeGen(CGF); - CodeGenFunction::JumpDest CurPoint = - CGF.getJumpDestInCurrentScope(".untied.next."); - CGF.EmitBranchThroughCleanup(CGF.ReturnBlock); - CGF.EmitBlock(CGF.createBasicBlock(".untied.jmp.")); - UntiedSwitch->addCase(CGF.Builder.getInt32(UntiedSwitch->getNumCases()), - CGF.Builder.GetInsertBlock()); - CGF.EmitBranchThroughCleanup(CurPoint); - CGF.EmitBlock(CurPoint.getBlock()); - } - } - unsigned getNumberOfParts() const { return UntiedSwitch->getNumCases(); } - }; - CGOpenMPTaskOutlinedRegionInfo(const CapturedStmt &CS, - const VarDecl *ThreadIDVar, - const RegionCodeGenTy &CodeGen, - OpenMPDirectiveKind Kind, bool HasCancel, - const UntiedTaskActionTy &Action) - : CGOpenMPRegionInfo(CS, TaskOutlinedRegion, CodeGen, Kind, HasCancel), - ThreadIDVar(ThreadIDVar), Action(Action) { - assert(ThreadIDVar != nullptr && "No ThreadID in OpenMP region."); - } - - /// Get a variable or parameter for storing global thread id - /// inside OpenMP construct. - const VarDecl *getThreadIDVariable() const override { return ThreadIDVar; } - - /// Get an LValue for the current ThreadID variable. - LValue getThreadIDVariableLValue(CodeGenFunction &CGF) override; - - /// Get the name of the capture helper. - StringRef getHelperName() const override { return ".omp_outlined."; } - - void emitUntiedSwitch(CodeGenFunction &CGF) override { - Action.emitUntiedSwitch(CGF); - } - - static bool classof(const CGCapturedStmtInfo *Info) { - return CGOpenMPRegionInfo::classof(Info) && - cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == - TaskOutlinedRegion; - } - -private: - /// A variable or parameter storing global thread id for OpenMP - /// constructs. - const VarDecl *ThreadIDVar; - /// Action for emitting code for untied tasks. - const UntiedTaskActionTy &Action; -}; - -/// API for inlined captured statement code generation in OpenMP -/// constructs. -class CGOpenMPInlinedRegionInfo : public CGOpenMPRegionInfo { -public: - CGOpenMPInlinedRegionInfo(CodeGenFunction::CGCapturedStmtInfo *OldCSI, - const RegionCodeGenTy &CodeGen, - OpenMPDirectiveKind Kind, bool HasCancel) - : CGOpenMPRegionInfo(InlinedRegion, CodeGen, Kind, HasCancel), - OldCSI(OldCSI), - OuterRegionInfo(dyn_cast_or_null<CGOpenMPRegionInfo>(OldCSI)) {} - - // Retrieve the value of the context parameter. - llvm::Value *getContextValue() const override { - if (OuterRegionInfo) - return OuterRegionInfo->getContextValue(); - llvm_unreachable("No context value for inlined OpenMP region"); - } - - void setContextValue(llvm::Value *V) override { - if (OuterRegionInfo) { - OuterRegionInfo->setContextValue(V); - return; - } - llvm_unreachable("No context value for inlined OpenMP region"); - } - - /// Lookup the captured field decl for a variable. - const FieldDecl *lookup(const VarDecl *VD) const override { - if (OuterRegionInfo) - return OuterRegionInfo->lookup(VD); - // If there is no outer outlined region,no need to lookup in a list of - // captured variables, we can use the original one. - return nullptr; - } - - FieldDecl *getThisFieldDecl() const override { - if (OuterRegionInfo) - return OuterRegionInfo->getThisFieldDecl(); - return nullptr; - } - - /// Get a variable or parameter for storing global thread id - /// inside OpenMP construct. - const VarDecl *getThreadIDVariable() const override { - if (OuterRegionInfo) - return OuterRegionInfo->getThreadIDVariable(); - return nullptr; - } - - /// Get an LValue for the current ThreadID variable. - LValue getThreadIDVariableLValue(CodeGenFunction &CGF) override { - if (OuterRegionInfo) - return OuterRegionInfo->getThreadIDVariableLValue(CGF); - llvm_unreachable("No LValue for inlined OpenMP construct"); - } - - /// Get the name of the capture helper. - StringRef getHelperName() const override { - if (auto *OuterRegionInfo = getOldCSI()) - return OuterRegionInfo->getHelperName(); - llvm_unreachable("No helper name for inlined OpenMP construct"); - } - - void emitUntiedSwitch(CodeGenFunction &CGF) override { - if (OuterRegionInfo) - OuterRegionInfo->emitUntiedSwitch(CGF); - } - - CodeGenFunction::CGCapturedStmtInfo *getOldCSI() const { return OldCSI; } - - static bool classof(const CGCapturedStmtInfo *Info) { - return CGOpenMPRegionInfo::classof(Info) && - cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == InlinedRegion; - } - - ~CGOpenMPInlinedRegionInfo() override = default; - -private: - /// CodeGen info about outer OpenMP region. - CodeGenFunction::CGCapturedStmtInfo *OldCSI; - CGOpenMPRegionInfo *OuterRegionInfo; -}; - -/// API for captured statement code generation in OpenMP target -/// constructs. For this captures, implicit parameters are used instead of the -/// captured fields. The name of the target region has to be unique in a given -/// application so it is provided by the client, because only the client has -/// the information to generate that. -class CGOpenMPTargetRegionInfo final : public CGOpenMPRegionInfo { -public: - CGOpenMPTargetRegionInfo(const CapturedStmt &CS, - const RegionCodeGenTy &CodeGen, StringRef HelperName) - : CGOpenMPRegionInfo(CS, TargetRegion, CodeGen, OMPD_target, - /*HasCancel=*/false), - HelperName(HelperName) {} - - /// This is unused for target regions because each starts executing - /// with a single thread. - const VarDecl *getThreadIDVariable() const override { return nullptr; } - - /// Get the name of the capture helper. - StringRef getHelperName() const override { return HelperName; } - - static bool classof(const CGCapturedStmtInfo *Info) { - return CGOpenMPRegionInfo::classof(Info) && - cast<CGOpenMPRegionInfo>(Info)->getRegionKind() == TargetRegion; - } - -private: - StringRef HelperName; -}; - -static void EmptyCodeGen(CodeGenFunction &, PrePostActionTy &) { - llvm_unreachable("No codegen for expressions"); -} -/// API for generation of expressions captured in a innermost OpenMP -/// region. -class CGOpenMPInnerExprInfo final : public CGOpenMPInlinedRegionInfo { -public: - CGOpenMPInnerExprInfo(CodeGenFunction &CGF, const CapturedStmt &CS) - : CGOpenMPInlinedRegionInfo(CGF.CapturedStmtInfo, EmptyCodeGen, - OMPD_unknown, - /*HasCancel=*/false), - PrivScope(CGF) { - // Make sure the globals captured in the provided statement are local by - // using the privatization logic. We assume the same variable is not - // captured more than once. - for (const auto &C : CS.captures()) { - if (!C.capturesVariable() && !C.capturesVariableByCopy()) - continue; - - const VarDecl *VD = C.getCapturedVar(); - if (VD->isLocalVarDeclOrParm()) - continue; - - DeclRefExpr DRE(CGF.getContext(), const_cast<VarDecl *>(VD), - /*RefersToEnclosingVariableOrCapture=*/false, - VD->getType().getNonReferenceType(), VK_LValue, - C.getLocation()); - PrivScope.addPrivate( - VD, [&CGF, &DRE]() { return CGF.EmitLValue(&DRE).getAddress(); }); - } - (void)PrivScope.Privatize(); - } - - /// Lookup the captured field decl for a variable. - const FieldDecl *lookup(const VarDecl *VD) const override { - if (const FieldDecl *FD = CGOpenMPInlinedRegionInfo::lookup(VD)) - return FD; - return nullptr; - } - - /// Emit the captured statement body. - void EmitBody(CodeGenFunction &CGF, const Stmt *S) override { - llvm_unreachable("No body for expressions"); - } - - /// Get a variable or parameter for storing global thread id - /// inside OpenMP construct. - const VarDecl *getThreadIDVariable() const override { - llvm_unreachable("No thread id for expressions"); - } - - /// Get the name of the capture helper. - StringRef getHelperName() const override { - llvm_unreachable("No helper name for expressions"); - } - - static bool classof(const CGCapturedStmtInfo *Info) { return false; } - -private: - /// Private scope to capture global variables. - CodeGenFunction::OMPPrivateScope PrivScope; -}; - -/// RAII for emitting code of OpenMP constructs. -class InlinedOpenMPRegionRAII { - CodeGenFunction &CGF; - llvm::DenseMap<const VarDecl *, FieldDecl *> LambdaCaptureFields; - FieldDecl *LambdaThisCaptureField = nullptr; - const CodeGen::CGBlockInfo *BlockInfo = nullptr; - -public: - /// Constructs region for combined constructs. - /// \param CodeGen Code generation sequence for combined directives. Includes - /// a list of functions used for code generation of implicitly inlined - /// regions. - InlinedOpenMPRegionRAII(CodeGenFunction &CGF, const RegionCodeGenTy &CodeGen, - OpenMPDirectiveKind Kind, bool HasCancel) - : CGF(CGF) { - // Start emission for the construct. - CGF.CapturedStmtInfo = new CGOpenMPInlinedRegionInfo( - CGF.CapturedStmtInfo, CodeGen, Kind, HasCancel); - std::swap(CGF.LambdaCaptureFields, LambdaCaptureFields); - LambdaThisCaptureField = CGF.LambdaThisCaptureField; - CGF.LambdaThisCaptureField = nullptr; - BlockInfo = CGF.BlockInfo; - CGF.BlockInfo = nullptr; - } - - ~InlinedOpenMPRegionRAII() { - // Restore original CapturedStmtInfo only if we're done with code emission. - auto *OldCSI = - cast<CGOpenMPInlinedRegionInfo>(CGF.CapturedStmtInfo)->getOldCSI(); - delete CGF.CapturedStmtInfo; - CGF.CapturedStmtInfo = OldCSI; - std::swap(CGF.LambdaCaptureFields, LambdaCaptureFields); - CGF.LambdaThisCaptureField = LambdaThisCaptureField; - CGF.BlockInfo = BlockInfo; - } -}; - -/// Values for bit flags used in the ident_t to describe the fields. -/// All enumeric elements are named and described in accordance with the code -/// from http://llvm.org/svn/llvm-project/openmp/trunk/runtime/src/kmp.h -enum OpenMPLocationFlags : unsigned { - /// Use trampoline for internal microtask. - OMP_IDENT_IMD = 0x01, - /// Use c-style ident structure. - OMP_IDENT_KMPC = 0x02, - /// Atomic reduction option for kmpc_reduce. - OMP_ATOMIC_REDUCE = 0x10, - /// Explicit 'barrier' directive. - OMP_IDENT_BARRIER_EXPL = 0x20, - /// Implicit barrier in code. - OMP_IDENT_BARRIER_IMPL = 0x40, - /// Implicit barrier in 'for' directive. - OMP_IDENT_BARRIER_IMPL_FOR = 0x40, - /// Implicit barrier in 'sections' directive. - OMP_IDENT_BARRIER_IMPL_SECTIONS = 0xC0, - /// Implicit barrier in 'single' directive. - OMP_IDENT_BARRIER_IMPL_SINGLE = 0x140, - /// Call of __kmp_for_static_init for static loop. - OMP_IDENT_WORK_LOOP = 0x200, - /// Call of __kmp_for_static_init for sections. - OMP_IDENT_WORK_SECTIONS = 0x400, - /// Call of __kmp_for_static_init for distribute. - OMP_IDENT_WORK_DISTRIBUTE = 0x800, - LLVM_MARK_AS_BITMASK_ENUM(/*LargestValue=*/OMP_IDENT_WORK_DISTRIBUTE) -}; - -/// Describes ident structure that describes a source location. -/// All descriptions are taken from -/// http://llvm.org/svn/llvm-project/openmp/trunk/runtime/src/kmp.h -/// Original structure: -/// typedef struct ident { -/// kmp_int32 reserved_1; /**< might be used in Fortran; -/// see above */ -/// kmp_int32 flags; /**< also f.flags; KMP_IDENT_xxx flags; -/// KMP_IDENT_KMPC identifies this union -/// member */ -/// kmp_int32 reserved_2; /**< not really used in Fortran any more; -/// see above */ -///#if USE_ITT_BUILD -/// /* but currently used for storing -/// region-specific ITT */ -/// /* contextual information. */ -///#endif /* USE_ITT_BUILD */ -/// kmp_int32 reserved_3; /**< source[4] in Fortran, do not use for -/// C++ */ -/// char const *psource; /**< String describing the source location. -/// The string is composed of semi-colon separated -// fields which describe the source file, -/// the function and a pair of line numbers that -/// delimit the construct. -/// */ -/// } ident_t; -enum IdentFieldIndex { - /// might be used in Fortran - IdentField_Reserved_1, - /// OMP_IDENT_xxx flags; OMP_IDENT_KMPC identifies this union member. - IdentField_Flags, - /// Not really used in Fortran any more - IdentField_Reserved_2, - /// Source[4] in Fortran, do not use for C++ - IdentField_Reserved_3, - /// String describing the source location. The string is composed of - /// semi-colon separated fields which describe the source file, the function - /// and a pair of line numbers that delimit the construct. - IdentField_PSource -}; - -/// Schedule types for 'omp for' loops (these enumerators are taken from -/// the enum sched_type in kmp.h). -enum OpenMPSchedType { - /// Lower bound for default (unordered) versions. - OMP_sch_lower = 32, - OMP_sch_static_chunked = 33, - OMP_sch_static = 34, - OMP_sch_dynamic_chunked = 35, - OMP_sch_guided_chunked = 36, - OMP_sch_runtime = 37, - OMP_sch_auto = 38, - /// static with chunk adjustment (e.g., simd) - OMP_sch_static_balanced_chunked = 45, - /// Lower bound for 'ordered' versions. - OMP_ord_lower = 64, - OMP_ord_static_chunked = 65, - OMP_ord_static = 66, - OMP_ord_dynamic_chunked = 67, - OMP_ord_guided_chunked = 68, - OMP_ord_runtime = 69, - OMP_ord_auto = 70, - OMP_sch_default = OMP_sch_static, - /// dist_schedule types - OMP_dist_sch_static_chunked = 91, - OMP_dist_sch_static = 92, - /// Support for OpenMP 4.5 monotonic and nonmonotonic schedule modifiers. - /// Set if the monotonic schedule modifier was present. - OMP_sch_modifier_monotonic = (1 << 29), - /// Set if the nonmonotonic schedule modifier was present. - OMP_sch_modifier_nonmonotonic = (1 << 30), -}; - -enum OpenMPRTLFunction { - /// Call to void __kmpc_fork_call(ident_t *loc, kmp_int32 argc, - /// kmpc_micro microtask, ...); - OMPRTL__kmpc_fork_call, - /// Call to void *__kmpc_threadprivate_cached(ident_t *loc, - /// kmp_int32 global_tid, void *data, size_t size, void ***cache); - OMPRTL__kmpc_threadprivate_cached, - /// Call to void __kmpc_threadprivate_register( ident_t *, - /// void *data, kmpc_ctor ctor, kmpc_cctor cctor, kmpc_dtor dtor); - OMPRTL__kmpc_threadprivate_register, - // Call to __kmpc_int32 kmpc_global_thread_num(ident_t *loc); - OMPRTL__kmpc_global_thread_num, - // Call to void __kmpc_critical(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *crit); - OMPRTL__kmpc_critical, - // Call to void __kmpc_critical_with_hint(ident_t *loc, kmp_int32 - // global_tid, kmp_critical_name *crit, uintptr_t hint); - OMPRTL__kmpc_critical_with_hint, - // Call to void __kmpc_end_critical(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *crit); - OMPRTL__kmpc_end_critical, - // Call to kmp_int32 __kmpc_cancel_barrier(ident_t *loc, kmp_int32 - // global_tid); - OMPRTL__kmpc_cancel_barrier, - // Call to void __kmpc_barrier(ident_t *loc, kmp_int32 global_tid); - OMPRTL__kmpc_barrier, - // Call to void __kmpc_for_static_fini(ident_t *loc, kmp_int32 global_tid); - OMPRTL__kmpc_for_static_fini, - // Call to void __kmpc_serialized_parallel(ident_t *loc, kmp_int32 - // global_tid); - OMPRTL__kmpc_serialized_parallel, - // Call to void __kmpc_end_serialized_parallel(ident_t *loc, kmp_int32 - // global_tid); - OMPRTL__kmpc_end_serialized_parallel, - // Call to void __kmpc_push_num_threads(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 num_threads); - OMPRTL__kmpc_push_num_threads, - // Call to void __kmpc_flush(ident_t *loc); - OMPRTL__kmpc_flush, - // Call to kmp_int32 __kmpc_master(ident_t *, kmp_int32 global_tid); - OMPRTL__kmpc_master, - // Call to void __kmpc_end_master(ident_t *, kmp_int32 global_tid); - OMPRTL__kmpc_end_master, - // Call to kmp_int32 __kmpc_omp_taskyield(ident_t *, kmp_int32 global_tid, - // int end_part); - OMPRTL__kmpc_omp_taskyield, - // Call to kmp_int32 __kmpc_single(ident_t *, kmp_int32 global_tid); - OMPRTL__kmpc_single, - // Call to void __kmpc_end_single(ident_t *, kmp_int32 global_tid); - OMPRTL__kmpc_end_single, - // Call to kmp_task_t * __kmpc_omp_task_alloc(ident_t *, kmp_int32 gtid, - // kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, - // kmp_routine_entry_t *task_entry); - OMPRTL__kmpc_omp_task_alloc, - // Call to kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t * - // new_task); - OMPRTL__kmpc_omp_task, - // Call to void __kmpc_copyprivate(ident_t *loc, kmp_int32 global_tid, - // size_t cpy_size, void *cpy_data, void(*cpy_func)(void *, void *), - // kmp_int32 didit); - OMPRTL__kmpc_copyprivate, - // Call to kmp_int32 __kmpc_reduce(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 num_vars, size_t reduce_size, void *reduce_data, void - // (*reduce_func)(void *lhs_data, void *rhs_data), kmp_critical_name *lck); - OMPRTL__kmpc_reduce, - // Call to kmp_int32 __kmpc_reduce_nowait(ident_t *loc, kmp_int32 - // global_tid, kmp_int32 num_vars, size_t reduce_size, void *reduce_data, - // void (*reduce_func)(void *lhs_data, void *rhs_data), kmp_critical_name - // *lck); - OMPRTL__kmpc_reduce_nowait, - // Call to void __kmpc_end_reduce(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *lck); - OMPRTL__kmpc_end_reduce, - // Call to void __kmpc_end_reduce_nowait(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *lck); - OMPRTL__kmpc_end_reduce_nowait, - // Call to void __kmpc_omp_task_begin_if0(ident_t *, kmp_int32 gtid, - // kmp_task_t * new_task); - OMPRTL__kmpc_omp_task_begin_if0, - // Call to void __kmpc_omp_task_complete_if0(ident_t *, kmp_int32 gtid, - // kmp_task_t * new_task); - OMPRTL__kmpc_omp_task_complete_if0, - // Call to void __kmpc_ordered(ident_t *loc, kmp_int32 global_tid); - OMPRTL__kmpc_ordered, - // Call to void __kmpc_end_ordered(ident_t *loc, kmp_int32 global_tid); - OMPRTL__kmpc_end_ordered, - // Call to kmp_int32 __kmpc_omp_taskwait(ident_t *loc, kmp_int32 - // global_tid); - OMPRTL__kmpc_omp_taskwait, - // Call to void __kmpc_taskgroup(ident_t *loc, kmp_int32 global_tid); - OMPRTL__kmpc_taskgroup, - // Call to void __kmpc_end_taskgroup(ident_t *loc, kmp_int32 global_tid); - OMPRTL__kmpc_end_taskgroup, - // Call to void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 global_tid, - // int proc_bind); - OMPRTL__kmpc_push_proc_bind, - // Call to kmp_int32 __kmpc_omp_task_with_deps(ident_t *loc_ref, kmp_int32 - // gtid, kmp_task_t * new_task, kmp_int32 ndeps, kmp_depend_info_t - // *dep_list, kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list); - OMPRTL__kmpc_omp_task_with_deps, - // Call to void __kmpc_omp_wait_deps(ident_t *loc_ref, kmp_int32 - // gtid, kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 - // ndeps_noalias, kmp_depend_info_t *noalias_dep_list); - OMPRTL__kmpc_omp_wait_deps, - // Call to kmp_int32 __kmpc_cancellationpoint(ident_t *loc, kmp_int32 - // global_tid, kmp_int32 cncl_kind); - OMPRTL__kmpc_cancellationpoint, - // Call to kmp_int32 __kmpc_cancel(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 cncl_kind); - OMPRTL__kmpc_cancel, - // Call to void __kmpc_push_num_teams(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 num_teams, kmp_int32 thread_limit); - OMPRTL__kmpc_push_num_teams, - // Call to void __kmpc_fork_teams(ident_t *loc, kmp_int32 argc, kmpc_micro - // microtask, ...); - OMPRTL__kmpc_fork_teams, - // Call to void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t *task, int - // if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int nogroup, int - // sched, kmp_uint64 grainsize, void *task_dup); - OMPRTL__kmpc_taskloop, - // Call to void __kmpc_doacross_init(ident_t *loc, kmp_int32 gtid, kmp_int32 - // num_dims, struct kmp_dim *dims); - OMPRTL__kmpc_doacross_init, - // Call to void __kmpc_doacross_fini(ident_t *loc, kmp_int32 gtid); - OMPRTL__kmpc_doacross_fini, - // Call to void __kmpc_doacross_post(ident_t *loc, kmp_int32 gtid, kmp_int64 - // *vec); - OMPRTL__kmpc_doacross_post, - // Call to void __kmpc_doacross_wait(ident_t *loc, kmp_int32 gtid, kmp_int64 - // *vec); - OMPRTL__kmpc_doacross_wait, - // Call to void *__kmpc_task_reduction_init(int gtid, int num_data, void - // *data); - OMPRTL__kmpc_task_reduction_init, - // Call to void *__kmpc_task_reduction_get_th_data(int gtid, void *tg, void - // *d); - OMPRTL__kmpc_task_reduction_get_th_data, - - // - // Offloading related calls - // - // Call to void __kmpc_push_target_tripcount(int64_t device_id, kmp_uint64 - // size); - OMPRTL__kmpc_push_target_tripcount, - // Call to int32_t __tgt_target(int64_t device_id, void *host_ptr, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - OMPRTL__tgt_target, - // Call to int32_t __tgt_target_nowait(int64_t device_id, void *host_ptr, - // int32_t arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - OMPRTL__tgt_target_nowait, - // Call to int32_t __tgt_target_teams(int64_t device_id, void *host_ptr, - // int32_t arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types, int32_t num_teams, int32_t thread_limit); - OMPRTL__tgt_target_teams, - // Call to int32_t __tgt_target_teams_nowait(int64_t device_id, void - // *host_ptr, int32_t arg_num, void** args_base, void **args, size_t - // *arg_sizes, int64_t *arg_types, int32_t num_teams, int32_t thread_limit); - OMPRTL__tgt_target_teams_nowait, - // Call to void __tgt_register_lib(__tgt_bin_desc *desc); - OMPRTL__tgt_register_lib, - // Call to void __tgt_unregister_lib(__tgt_bin_desc *desc); - OMPRTL__tgt_unregister_lib, - // Call to void __tgt_target_data_begin(int64_t device_id, int32_t arg_num, - // void** args_base, void **args, size_t *arg_sizes, int64_t *arg_types); - OMPRTL__tgt_target_data_begin, - // Call to void __tgt_target_data_begin_nowait(int64_t device_id, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - OMPRTL__tgt_target_data_begin_nowait, - // Call to void __tgt_target_data_end(int64_t device_id, int32_t arg_num, - // void** args_base, void **args, size_t *arg_sizes, int64_t *arg_types); - OMPRTL__tgt_target_data_end, - // Call to void __tgt_target_data_end_nowait(int64_t device_id, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - OMPRTL__tgt_target_data_end_nowait, - // Call to void __tgt_target_data_update(int64_t device_id, int32_t arg_num, - // void** args_base, void **args, size_t *arg_sizes, int64_t *arg_types); - OMPRTL__tgt_target_data_update, - // Call to void __tgt_target_data_update_nowait(int64_t device_id, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - OMPRTL__tgt_target_data_update_nowait, -}; - -/// A basic class for pre|post-action for advanced codegen sequence for OpenMP -/// region. -class CleanupTy final : public EHScopeStack::Cleanup { - PrePostActionTy *Action; - -public: - explicit CleanupTy(PrePostActionTy *Action) : Action(Action) {} - void Emit(CodeGenFunction &CGF, Flags /*flags*/) override { - if (!CGF.HaveInsertPoint()) - return; - Action->Exit(CGF); - } -}; - -} // anonymous namespace - -void RegionCodeGenTy::operator()(CodeGenFunction &CGF) const { - CodeGenFunction::RunCleanupsScope Scope(CGF); - if (PrePostAction) { - CGF.EHStack.pushCleanup<CleanupTy>(NormalAndEHCleanup, PrePostAction); - Callback(CodeGen, CGF, *PrePostAction); - } else { - PrePostActionTy Action; - Callback(CodeGen, CGF, Action); - } -} - -/// Check if the combiner is a call to UDR combiner and if it is so return the -/// UDR decl used for reduction. -static const OMPDeclareReductionDecl * -getReductionInit(const Expr *ReductionOp) { - if (const auto *CE = dyn_cast<CallExpr>(ReductionOp)) - if (const auto *OVE = dyn_cast<OpaqueValueExpr>(CE->getCallee())) - if (const auto *DRE = - dyn_cast<DeclRefExpr>(OVE->getSourceExpr()->IgnoreImpCasts())) - if (const auto *DRD = dyn_cast<OMPDeclareReductionDecl>(DRE->getDecl())) - return DRD; - return nullptr; -} - -static void emitInitWithReductionInitializer(CodeGenFunction &CGF, - const OMPDeclareReductionDecl *DRD, - const Expr *InitOp, - Address Private, Address Original, - QualType Ty) { - if (DRD->getInitializer()) { - std::pair<llvm::Function *, llvm::Function *> Reduction = - CGF.CGM.getOpenMPRuntime().getUserDefinedReduction(DRD); - const auto *CE = cast<CallExpr>(InitOp); - const auto *OVE = cast<OpaqueValueExpr>(CE->getCallee()); - const Expr *LHS = CE->getArg(/*Arg=*/0)->IgnoreParenImpCasts(); - const Expr *RHS = CE->getArg(/*Arg=*/1)->IgnoreParenImpCasts(); - const auto *LHSDRE = - cast<DeclRefExpr>(cast<UnaryOperator>(LHS)->getSubExpr()); - const auto *RHSDRE = - cast<DeclRefExpr>(cast<UnaryOperator>(RHS)->getSubExpr()); - CodeGenFunction::OMPPrivateScope PrivateScope(CGF); - PrivateScope.addPrivate(cast<VarDecl>(LHSDRE->getDecl()), - [=]() { return Private; }); - PrivateScope.addPrivate(cast<VarDecl>(RHSDRE->getDecl()), - [=]() { return Original; }); - (void)PrivateScope.Privatize(); - RValue Func = RValue::get(Reduction.second); - CodeGenFunction::OpaqueValueMapping Map(CGF, OVE, Func); - CGF.EmitIgnoredExpr(InitOp); - } else { - llvm::Constant *Init = CGF.CGM.EmitNullConstant(Ty); - std::string Name = CGF.CGM.getOpenMPRuntime().getName({"init"}); - auto *GV = new llvm::GlobalVariable( - CGF.CGM.getModule(), Init->getType(), /*isConstant=*/true, - llvm::GlobalValue::PrivateLinkage, Init, Name); - LValue LV = CGF.MakeNaturalAlignAddrLValue(GV, Ty); - RValue InitRVal; - switch (CGF.getEvaluationKind(Ty)) { - case TEK_Scalar: - InitRVal = CGF.EmitLoadOfLValue(LV, DRD->getLocation()); - break; - case TEK_Complex: - InitRVal = - RValue::getComplex(CGF.EmitLoadOfComplex(LV, DRD->getLocation())); - break; - case TEK_Aggregate: - InitRVal = RValue::getAggregate(LV.getAddress()); - break; - } - OpaqueValueExpr OVE(DRD->getLocation(), Ty, VK_RValue); - CodeGenFunction::OpaqueValueMapping OpaqueMap(CGF, &OVE, InitRVal); - CGF.EmitAnyExprToMem(&OVE, Private, Ty.getQualifiers(), - /*IsInitializer=*/false); - } -} - -/// Emit initialization of arrays of complex types. -/// \param DestAddr Address of the array. -/// \param Type Type of array. -/// \param Init Initial expression of array. -/// \param SrcAddr Address of the original array. -static void EmitOMPAggregateInit(CodeGenFunction &CGF, Address DestAddr, - QualType Type, bool EmitDeclareReductionInit, - const Expr *Init, - const OMPDeclareReductionDecl *DRD, - Address SrcAddr = Address::invalid()) { - // Perform element-by-element initialization. - QualType ElementTy; - - // Drill down to the base element type on both arrays. - const ArrayType *ArrayTy = Type->getAsArrayTypeUnsafe(); - llvm::Value *NumElements = CGF.emitArrayLength(ArrayTy, ElementTy, DestAddr); - DestAddr = - CGF.Builder.CreateElementBitCast(DestAddr, DestAddr.getElementType()); - if (DRD) - SrcAddr = - CGF.Builder.CreateElementBitCast(SrcAddr, DestAddr.getElementType()); - - llvm::Value *SrcBegin = nullptr; - if (DRD) - SrcBegin = SrcAddr.getPointer(); - llvm::Value *DestBegin = DestAddr.getPointer(); - // Cast from pointer to array type to pointer to single element. - llvm::Value *DestEnd = CGF.Builder.CreateGEP(DestBegin, NumElements); - // The basic structure here is a while-do loop. - llvm::BasicBlock *BodyBB = CGF.createBasicBlock("omp.arrayinit.body"); - llvm::BasicBlock *DoneBB = CGF.createBasicBlock("omp.arrayinit.done"); - llvm::Value *IsEmpty = - CGF.Builder.CreateICmpEQ(DestBegin, DestEnd, "omp.arrayinit.isempty"); - CGF.Builder.CreateCondBr(IsEmpty, DoneBB, BodyBB); - - // Enter the loop body, making that address the current address. - llvm::BasicBlock *EntryBB = CGF.Builder.GetInsertBlock(); - CGF.EmitBlock(BodyBB); - - CharUnits ElementSize = CGF.getContext().getTypeSizeInChars(ElementTy); - - llvm::PHINode *SrcElementPHI = nullptr; - Address SrcElementCurrent = Address::invalid(); - if (DRD) { - SrcElementPHI = CGF.Builder.CreatePHI(SrcBegin->getType(), 2, - "omp.arraycpy.srcElementPast"); - SrcElementPHI->addIncoming(SrcBegin, EntryBB); - SrcElementCurrent = - Address(SrcElementPHI, - SrcAddr.getAlignment().alignmentOfArrayElement(ElementSize)); - } - llvm::PHINode *DestElementPHI = CGF.Builder.CreatePHI( - DestBegin->getType(), 2, "omp.arraycpy.destElementPast"); - DestElementPHI->addIncoming(DestBegin, EntryBB); - Address DestElementCurrent = - Address(DestElementPHI, - DestAddr.getAlignment().alignmentOfArrayElement(ElementSize)); - - // Emit copy. - { - CodeGenFunction::RunCleanupsScope InitScope(CGF); - if (EmitDeclareReductionInit) { - emitInitWithReductionInitializer(CGF, DRD, Init, DestElementCurrent, - SrcElementCurrent, ElementTy); - } else - CGF.EmitAnyExprToMem(Init, DestElementCurrent, ElementTy.getQualifiers(), - /*IsInitializer=*/false); - } - - if (DRD) { - // Shift the address forward by one element. - llvm::Value *SrcElementNext = CGF.Builder.CreateConstGEP1_32( - SrcElementPHI, /*Idx0=*/1, "omp.arraycpy.dest.element"); - SrcElementPHI->addIncoming(SrcElementNext, CGF.Builder.GetInsertBlock()); - } - - // Shift the address forward by one element. - llvm::Value *DestElementNext = CGF.Builder.CreateConstGEP1_32( - DestElementPHI, /*Idx0=*/1, "omp.arraycpy.dest.element"); - // Check whether we've reached the end. - llvm::Value *Done = - CGF.Builder.CreateICmpEQ(DestElementNext, DestEnd, "omp.arraycpy.done"); - CGF.Builder.CreateCondBr(Done, DoneBB, BodyBB); - DestElementPHI->addIncoming(DestElementNext, CGF.Builder.GetInsertBlock()); - - // Done. - CGF.EmitBlock(DoneBB, /*IsFinished=*/true); -} - -LValue ReductionCodeGen::emitSharedLValue(CodeGenFunction &CGF, const Expr *E) { - return CGF.EmitOMPSharedLValue(E); -} - -LValue ReductionCodeGen::emitSharedLValueUB(CodeGenFunction &CGF, - const Expr *E) { - if (const auto *OASE = dyn_cast<OMPArraySectionExpr>(E)) - return CGF.EmitOMPArraySectionExpr(OASE, /*IsLowerBound=*/false); - return LValue(); -} - -void ReductionCodeGen::emitAggregateInitialization( - CodeGenFunction &CGF, unsigned N, Address PrivateAddr, LValue SharedLVal, - const OMPDeclareReductionDecl *DRD) { - // Emit VarDecl with copy init for arrays. - // Get the address of the original variable captured in current - // captured region. - const auto *PrivateVD = - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Private)->getDecl()); - bool EmitDeclareReductionInit = - DRD && (DRD->getInitializer() || !PrivateVD->hasInit()); - EmitOMPAggregateInit(CGF, PrivateAddr, PrivateVD->getType(), - EmitDeclareReductionInit, - EmitDeclareReductionInit ? ClausesData[N].ReductionOp - : PrivateVD->getInit(), - DRD, SharedLVal.getAddress()); -} - -ReductionCodeGen::ReductionCodeGen(ArrayRef<const Expr *> Shareds, - ArrayRef<const Expr *> Privates, - ArrayRef<const Expr *> ReductionOps) { - ClausesData.reserve(Shareds.size()); - SharedAddresses.reserve(Shareds.size()); - Sizes.reserve(Shareds.size()); - BaseDecls.reserve(Shareds.size()); - auto IPriv = Privates.begin(); - auto IRed = ReductionOps.begin(); - for (const Expr *Ref : Shareds) { - ClausesData.emplace_back(Ref, *IPriv, *IRed); - std::advance(IPriv, 1); - std::advance(IRed, 1); - } -} - -void ReductionCodeGen::emitSharedLValue(CodeGenFunction &CGF, unsigned N) { - assert(SharedAddresses.size() == N && - "Number of generated lvalues must be exactly N."); - LValue First = emitSharedLValue(CGF, ClausesData[N].Ref); - LValue Second = emitSharedLValueUB(CGF, ClausesData[N].Ref); - SharedAddresses.emplace_back(First, Second); -} - -void ReductionCodeGen::emitAggregateType(CodeGenFunction &CGF, unsigned N) { - const auto *PrivateVD = - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Private)->getDecl()); - QualType PrivateType = PrivateVD->getType(); - bool AsArraySection = isa<OMPArraySectionExpr>(ClausesData[N].Ref); - if (!PrivateType->isVariablyModifiedType()) { - Sizes.emplace_back( - CGF.getTypeSize( - SharedAddresses[N].first.getType().getNonReferenceType()), - nullptr); - return; - } - llvm::Value *Size; - llvm::Value *SizeInChars; - auto *ElemType = - cast<llvm::PointerType>(SharedAddresses[N].first.getPointer()->getType()) - ->getElementType(); - auto *ElemSizeOf = llvm::ConstantExpr::getSizeOf(ElemType); - if (AsArraySection) { - Size = CGF.Builder.CreatePtrDiff(SharedAddresses[N].second.getPointer(), - SharedAddresses[N].first.getPointer()); - Size = CGF.Builder.CreateNUWAdd( - Size, llvm::ConstantInt::get(Size->getType(), /*V=*/1)); - SizeInChars = CGF.Builder.CreateNUWMul(Size, ElemSizeOf); - } else { - SizeInChars = CGF.getTypeSize( - SharedAddresses[N].first.getType().getNonReferenceType()); - Size = CGF.Builder.CreateExactUDiv(SizeInChars, ElemSizeOf); - } - Sizes.emplace_back(SizeInChars, Size); - CodeGenFunction::OpaqueValueMapping OpaqueMap( - CGF, - cast<OpaqueValueExpr>( - CGF.getContext().getAsVariableArrayType(PrivateType)->getSizeExpr()), - RValue::get(Size)); - CGF.EmitVariablyModifiedType(PrivateType); -} - -void ReductionCodeGen::emitAggregateType(CodeGenFunction &CGF, unsigned N, - llvm::Value *Size) { - const auto *PrivateVD = - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Private)->getDecl()); - QualType PrivateType = PrivateVD->getType(); - if (!PrivateType->isVariablyModifiedType()) { - assert(!Size && !Sizes[N].second && - "Size should be nullptr for non-variably modified reduction " - "items."); - return; - } - CodeGenFunction::OpaqueValueMapping OpaqueMap( - CGF, - cast<OpaqueValueExpr>( - CGF.getContext().getAsVariableArrayType(PrivateType)->getSizeExpr()), - RValue::get(Size)); - CGF.EmitVariablyModifiedType(PrivateType); -} - -void ReductionCodeGen::emitInitialization( - CodeGenFunction &CGF, unsigned N, Address PrivateAddr, LValue SharedLVal, - llvm::function_ref<bool(CodeGenFunction &)> DefaultInit) { - assert(SharedAddresses.size() > N && "No variable was generated"); - const auto *PrivateVD = - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Private)->getDecl()); - const OMPDeclareReductionDecl *DRD = - getReductionInit(ClausesData[N].ReductionOp); - QualType PrivateType = PrivateVD->getType(); - PrivateAddr = CGF.Builder.CreateElementBitCast( - PrivateAddr, CGF.ConvertTypeForMem(PrivateType)); - QualType SharedType = SharedAddresses[N].first.getType(); - SharedLVal = CGF.MakeAddrLValue( - CGF.Builder.CreateElementBitCast(SharedLVal.getAddress(), - CGF.ConvertTypeForMem(SharedType)), - SharedType, SharedAddresses[N].first.getBaseInfo(), - CGF.CGM.getTBAAInfoForSubobject(SharedAddresses[N].first, SharedType)); - if (CGF.getContext().getAsArrayType(PrivateVD->getType())) { - emitAggregateInitialization(CGF, N, PrivateAddr, SharedLVal, DRD); - } else if (DRD && (DRD->getInitializer() || !PrivateVD->hasInit())) { - emitInitWithReductionInitializer(CGF, DRD, ClausesData[N].ReductionOp, - PrivateAddr, SharedLVal.getAddress(), - SharedLVal.getType()); - } else if (!DefaultInit(CGF) && PrivateVD->hasInit() && - !CGF.isTrivialInitializer(PrivateVD->getInit())) { - CGF.EmitAnyExprToMem(PrivateVD->getInit(), PrivateAddr, - PrivateVD->getType().getQualifiers(), - /*IsInitializer=*/false); - } -} - -bool ReductionCodeGen::needCleanups(unsigned N) { - const auto *PrivateVD = - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Private)->getDecl()); - QualType PrivateType = PrivateVD->getType(); - QualType::DestructionKind DTorKind = PrivateType.isDestructedType(); - return DTorKind != QualType::DK_none; -} - -void ReductionCodeGen::emitCleanups(CodeGenFunction &CGF, unsigned N, - Address PrivateAddr) { - const auto *PrivateVD = - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Private)->getDecl()); - QualType PrivateType = PrivateVD->getType(); - QualType::DestructionKind DTorKind = PrivateType.isDestructedType(); - if (needCleanups(N)) { - PrivateAddr = CGF.Builder.CreateElementBitCast( - PrivateAddr, CGF.ConvertTypeForMem(PrivateType)); - CGF.pushDestroy(DTorKind, PrivateAddr, PrivateType); - } -} - -static LValue loadToBegin(CodeGenFunction &CGF, QualType BaseTy, QualType ElTy, - LValue BaseLV) { - BaseTy = BaseTy.getNonReferenceType(); - while ((BaseTy->isPointerType() || BaseTy->isReferenceType()) && - !CGF.getContext().hasSameType(BaseTy, ElTy)) { - if (const auto *PtrTy = BaseTy->getAs<PointerType>()) { - BaseLV = CGF.EmitLoadOfPointerLValue(BaseLV.getAddress(), PtrTy); - } else { - LValue RefLVal = CGF.MakeAddrLValue(BaseLV.getAddress(), BaseTy); - BaseLV = CGF.EmitLoadOfReferenceLValue(RefLVal); - } - BaseTy = BaseTy->getPointeeType(); - } - return CGF.MakeAddrLValue( - CGF.Builder.CreateElementBitCast(BaseLV.getAddress(), - CGF.ConvertTypeForMem(ElTy)), - BaseLV.getType(), BaseLV.getBaseInfo(), - CGF.CGM.getTBAAInfoForSubobject(BaseLV, BaseLV.getType())); -} - -static Address castToBase(CodeGenFunction &CGF, QualType BaseTy, QualType ElTy, - llvm::Type *BaseLVType, CharUnits BaseLVAlignment, - llvm::Value *Addr) { - Address Tmp = Address::invalid(); - Address TopTmp = Address::invalid(); - Address MostTopTmp = Address::invalid(); - BaseTy = BaseTy.getNonReferenceType(); - while ((BaseTy->isPointerType() || BaseTy->isReferenceType()) && - !CGF.getContext().hasSameType(BaseTy, ElTy)) { - Tmp = CGF.CreateMemTemp(BaseTy); - if (TopTmp.isValid()) - CGF.Builder.CreateStore(Tmp.getPointer(), TopTmp); - else - MostTopTmp = Tmp; - TopTmp = Tmp; - BaseTy = BaseTy->getPointeeType(); - } - llvm::Type *Ty = BaseLVType; - if (Tmp.isValid()) - Ty = Tmp.getElementType(); - Addr = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(Addr, Ty); - if (Tmp.isValid()) { - CGF.Builder.CreateStore(Addr, Tmp); - return MostTopTmp; - } - return Address(Addr, BaseLVAlignment); -} - -static const VarDecl *getBaseDecl(const Expr *Ref, const DeclRefExpr *&DE) { - const VarDecl *OrigVD = nullptr; - if (const auto *OASE = dyn_cast<OMPArraySectionExpr>(Ref)) { - const Expr *Base = OASE->getBase()->IgnoreParenImpCasts(); - while (const auto *TempOASE = dyn_cast<OMPArraySectionExpr>(Base)) - Base = TempOASE->getBase()->IgnoreParenImpCasts(); - while (const auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base)) - Base = TempASE->getBase()->IgnoreParenImpCasts(); - DE = cast<DeclRefExpr>(Base); - OrigVD = cast<VarDecl>(DE->getDecl()); - } else if (const auto *ASE = dyn_cast<ArraySubscriptExpr>(Ref)) { - const Expr *Base = ASE->getBase()->IgnoreParenImpCasts(); - while (const auto *TempASE = dyn_cast<ArraySubscriptExpr>(Base)) - Base = TempASE->getBase()->IgnoreParenImpCasts(); - DE = cast<DeclRefExpr>(Base); - OrigVD = cast<VarDecl>(DE->getDecl()); - } - return OrigVD; -} - -Address ReductionCodeGen::adjustPrivateAddress(CodeGenFunction &CGF, unsigned N, - Address PrivateAddr) { - const DeclRefExpr *DE; - if (const VarDecl *OrigVD = ::getBaseDecl(ClausesData[N].Ref, DE)) { - BaseDecls.emplace_back(OrigVD); - LValue OriginalBaseLValue = CGF.EmitLValue(DE); - LValue BaseLValue = - loadToBegin(CGF, OrigVD->getType(), SharedAddresses[N].first.getType(), - OriginalBaseLValue); - llvm::Value *Adjustment = CGF.Builder.CreatePtrDiff( - BaseLValue.getPointer(), SharedAddresses[N].first.getPointer()); - llvm::Value *PrivatePointer = - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - PrivateAddr.getPointer(), - SharedAddresses[N].first.getAddress().getType()); - llvm::Value *Ptr = CGF.Builder.CreateGEP(PrivatePointer, Adjustment); - return castToBase(CGF, OrigVD->getType(), - SharedAddresses[N].first.getType(), - OriginalBaseLValue.getAddress().getType(), - OriginalBaseLValue.getAlignment(), Ptr); - } - BaseDecls.emplace_back( - cast<VarDecl>(cast<DeclRefExpr>(ClausesData[N].Ref)->getDecl())); - return PrivateAddr; -} - -bool ReductionCodeGen::usesReductionInitializer(unsigned N) const { - const OMPDeclareReductionDecl *DRD = - getReductionInit(ClausesData[N].ReductionOp); - return DRD && DRD->getInitializer(); -} - -LValue CGOpenMPRegionInfo::getThreadIDVariableLValue(CodeGenFunction &CGF) { - return CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(getThreadIDVariable()), - getThreadIDVariable()->getType()->castAs<PointerType>()); -} - -void CGOpenMPRegionInfo::EmitBody(CodeGenFunction &CGF, const Stmt * /*S*/) { - if (!CGF.HaveInsertPoint()) - return; - // 1.2.2 OpenMP Language Terminology - // Structured block - An executable statement with a single entry at the - // top and a single exit at the bottom. - // The point of exit cannot be a branch out of the structured block. - // longjmp() and throw() must not violate the entry/exit criteria. - CGF.EHStack.pushTerminate(); - CodeGen(CGF); - CGF.EHStack.popTerminate(); -} - -LValue CGOpenMPTaskOutlinedRegionInfo::getThreadIDVariableLValue( - CodeGenFunction &CGF) { - return CGF.MakeAddrLValue(CGF.GetAddrOfLocalVar(getThreadIDVariable()), - getThreadIDVariable()->getType(), - AlignmentSource::Decl); -} - -static FieldDecl *addFieldToRecordDecl(ASTContext &C, DeclContext *DC, - QualType FieldTy) { - auto *Field = FieldDecl::Create( - C, DC, SourceLocation(), SourceLocation(), /*Id=*/nullptr, FieldTy, - C.getTrivialTypeSourceInfo(FieldTy, SourceLocation()), - /*BW=*/nullptr, /*Mutable=*/false, /*InitStyle=*/ICIS_NoInit); - Field->setAccess(AS_public); - DC->addDecl(Field); - return Field; -} - -CGOpenMPRuntime::CGOpenMPRuntime(CodeGenModule &CGM, StringRef FirstSeparator, - StringRef Separator) - : CGM(CGM), FirstSeparator(FirstSeparator), Separator(Separator), - OffloadEntriesInfoManager(CGM) { - ASTContext &C = CGM.getContext(); - RecordDecl *RD = C.buildImplicitRecord("ident_t"); - QualType KmpInt32Ty = C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1); - RD->startDefinition(); - // reserved_1 - addFieldToRecordDecl(C, RD, KmpInt32Ty); - // flags - addFieldToRecordDecl(C, RD, KmpInt32Ty); - // reserved_2 - addFieldToRecordDecl(C, RD, KmpInt32Ty); - // reserved_3 - addFieldToRecordDecl(C, RD, KmpInt32Ty); - // psource - addFieldToRecordDecl(C, RD, C.VoidPtrTy); - RD->completeDefinition(); - IdentQTy = C.getRecordType(RD); - IdentTy = CGM.getTypes().ConvertRecordDeclType(RD); - KmpCriticalNameTy = llvm::ArrayType::get(CGM.Int32Ty, /*NumElements*/ 8); - - loadOffloadInfoMetadata(); -} - -void CGOpenMPRuntime::clear() { - InternalVars.clear(); - // Clean non-target variable declarations possibly used only in debug info. - for (const auto &Data : EmittedNonTargetVariables) { - if (!Data.getValue().pointsToAliveValue()) - continue; - auto *GV = dyn_cast<llvm::GlobalVariable>(Data.getValue()); - if (!GV) - continue; - if (!GV->isDeclaration() || GV->getNumUses() > 0) - continue; - GV->eraseFromParent(); - } -} - -std::string CGOpenMPRuntime::getName(ArrayRef<StringRef> Parts) const { - SmallString<128> Buffer; - llvm::raw_svector_ostream OS(Buffer); - StringRef Sep = FirstSeparator; - for (StringRef Part : Parts) { - OS << Sep << Part; - Sep = Separator; - } - return OS.str(); -} - -static llvm::Function * -emitCombinerOrInitializer(CodeGenModule &CGM, QualType Ty, - const Expr *CombinerInitializer, const VarDecl *In, - const VarDecl *Out, bool IsCombiner) { - // void .omp_combiner.(Ty *in, Ty *out); - ASTContext &C = CGM.getContext(); - QualType PtrTy = C.getPointerType(Ty).withRestrict(); - FunctionArgList Args; - ImplicitParamDecl OmpOutParm(C, /*DC=*/nullptr, Out->getLocation(), - /*Id=*/nullptr, PtrTy, ImplicitParamDecl::Other); - ImplicitParamDecl OmpInParm(C, /*DC=*/nullptr, In->getLocation(), - /*Id=*/nullptr, PtrTy, ImplicitParamDecl::Other); - Args.push_back(&OmpOutParm); - Args.push_back(&OmpInParm); - const CGFunctionInfo &FnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *FnTy = CGM.getTypes().GetFunctionType(FnInfo); - std::string Name = CGM.getOpenMPRuntime().getName( - {IsCombiner ? "omp_combiner" : "omp_initializer", ""}); - auto *Fn = llvm::Function::Create(FnTy, llvm::GlobalValue::InternalLinkage, - Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, FnInfo); - Fn->removeFnAttr(llvm::Attribute::NoInline); - Fn->removeFnAttr(llvm::Attribute::OptimizeNone); - Fn->addFnAttr(llvm::Attribute::AlwaysInline); - CodeGenFunction CGF(CGM); - // Map "T omp_in;" variable to "*omp_in_parm" value in all expressions. - // Map "T omp_out;" variable to "*omp_out_parm" value in all expressions. - CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, FnInfo, Args, In->getLocation(), - Out->getLocation()); - CodeGenFunction::OMPPrivateScope Scope(CGF); - Address AddrIn = CGF.GetAddrOfLocalVar(&OmpInParm); - Scope.addPrivate(In, [&CGF, AddrIn, PtrTy]() { - return CGF.EmitLoadOfPointerLValue(AddrIn, PtrTy->castAs<PointerType>()) - .getAddress(); - }); - Address AddrOut = CGF.GetAddrOfLocalVar(&OmpOutParm); - Scope.addPrivate(Out, [&CGF, AddrOut, PtrTy]() { - return CGF.EmitLoadOfPointerLValue(AddrOut, PtrTy->castAs<PointerType>()) - .getAddress(); - }); - (void)Scope.Privatize(); - if (!IsCombiner && Out->hasInit() && - !CGF.isTrivialInitializer(Out->getInit())) { - CGF.EmitAnyExprToMem(Out->getInit(), CGF.GetAddrOfLocalVar(Out), - Out->getType().getQualifiers(), - /*IsInitializer=*/true); - } - if (CombinerInitializer) - CGF.EmitIgnoredExpr(CombinerInitializer); - Scope.ForceCleanup(); - CGF.FinishFunction(); - return Fn; -} - -void CGOpenMPRuntime::emitUserDefinedReduction( - CodeGenFunction *CGF, const OMPDeclareReductionDecl *D) { - if (UDRMap.count(D) > 0) - return; - llvm::Function *Combiner = emitCombinerOrInitializer( - CGM, D->getType(), D->getCombiner(), - cast<VarDecl>(cast<DeclRefExpr>(D->getCombinerIn())->getDecl()), - cast<VarDecl>(cast<DeclRefExpr>(D->getCombinerOut())->getDecl()), - /*IsCombiner=*/true); - llvm::Function *Initializer = nullptr; - if (const Expr *Init = D->getInitializer()) { - Initializer = emitCombinerOrInitializer( - CGM, D->getType(), - D->getInitializerKind() == OMPDeclareReductionDecl::CallInit ? Init - : nullptr, - cast<VarDecl>(cast<DeclRefExpr>(D->getInitOrig())->getDecl()), - cast<VarDecl>(cast<DeclRefExpr>(D->getInitPriv())->getDecl()), - /*IsCombiner=*/false); - } - UDRMap.try_emplace(D, Combiner, Initializer); - if (CGF) { - auto &Decls = FunctionUDRMap.FindAndConstruct(CGF->CurFn); - Decls.second.push_back(D); - } -} - -std::pair<llvm::Function *, llvm::Function *> -CGOpenMPRuntime::getUserDefinedReduction(const OMPDeclareReductionDecl *D) { - auto I = UDRMap.find(D); - if (I != UDRMap.end()) - return I->second; - emitUserDefinedReduction(/*CGF=*/nullptr, D); - return UDRMap.lookup(D); -} - -static llvm::Value *emitParallelOrTeamsOutlinedFunction( - CodeGenModule &CGM, const OMPExecutableDirective &D, const CapturedStmt *CS, - const VarDecl *ThreadIDVar, OpenMPDirectiveKind InnermostKind, - const StringRef OutlinedHelperName, const RegionCodeGenTy &CodeGen) { - assert(ThreadIDVar->getType()->isPointerType() && - "thread id variable must be of type kmp_int32 *"); - CodeGenFunction CGF(CGM, true); - bool HasCancel = false; - if (const auto *OPD = dyn_cast<OMPParallelDirective>(&D)) - HasCancel = OPD->hasCancel(); - else if (const auto *OPSD = dyn_cast<OMPParallelSectionsDirective>(&D)) - HasCancel = OPSD->hasCancel(); - else if (const auto *OPFD = dyn_cast<OMPParallelForDirective>(&D)) - HasCancel = OPFD->hasCancel(); - else if (const auto *OPFD = dyn_cast<OMPTargetParallelForDirective>(&D)) - HasCancel = OPFD->hasCancel(); - else if (const auto *OPFD = dyn_cast<OMPDistributeParallelForDirective>(&D)) - HasCancel = OPFD->hasCancel(); - else if (const auto *OPFD = - dyn_cast<OMPTeamsDistributeParallelForDirective>(&D)) - HasCancel = OPFD->hasCancel(); - else if (const auto *OPFD = - dyn_cast<OMPTargetTeamsDistributeParallelForDirective>(&D)) - HasCancel = OPFD->hasCancel(); - CGOpenMPOutlinedRegionInfo CGInfo(*CS, ThreadIDVar, CodeGen, InnermostKind, - HasCancel, OutlinedHelperName); - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); - return CGF.GenerateOpenMPCapturedStmtFunction(*CS); -} - -llvm::Value *CGOpenMPRuntime::emitParallelOutlinedFunction( - const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, - OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) { - const CapturedStmt *CS = D.getCapturedStmt(OMPD_parallel); - return emitParallelOrTeamsOutlinedFunction( - CGM, D, CS, ThreadIDVar, InnermostKind, getOutlinedHelperName(), CodeGen); -} - -llvm::Value *CGOpenMPRuntime::emitTeamsOutlinedFunction( - const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, - OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) { - const CapturedStmt *CS = D.getCapturedStmt(OMPD_teams); - return emitParallelOrTeamsOutlinedFunction( - CGM, D, CS, ThreadIDVar, InnermostKind, getOutlinedHelperName(), CodeGen); -} - -llvm::Value *CGOpenMPRuntime::emitTaskOutlinedFunction( - const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, - const VarDecl *PartIDVar, const VarDecl *TaskTVar, - OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen, - bool Tied, unsigned &NumberOfParts) { - auto &&UntiedCodeGen = [this, &D, TaskTVar](CodeGenFunction &CGF, - PrePostActionTy &) { - llvm::Value *ThreadID = getThreadID(CGF, D.getBeginLoc()); - llvm::Value *UpLoc = emitUpdateLocation(CGF, D.getBeginLoc()); - llvm::Value *TaskArgs[] = { - UpLoc, ThreadID, - CGF.EmitLoadOfPointerLValue(CGF.GetAddrOfLocalVar(TaskTVar), - TaskTVar->getType()->castAs<PointerType>()) - .getPointer()}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_task), TaskArgs); - }; - CGOpenMPTaskOutlinedRegionInfo::UntiedTaskActionTy Action(Tied, PartIDVar, - UntiedCodeGen); - CodeGen.setAction(Action); - assert(!ThreadIDVar->getType()->isPointerType() && - "thread id variable must be of type kmp_int32 for tasks"); - const OpenMPDirectiveKind Region = - isOpenMPTaskLoopDirective(D.getDirectiveKind()) ? OMPD_taskloop - : OMPD_task; - const CapturedStmt *CS = D.getCapturedStmt(Region); - const auto *TD = dyn_cast<OMPTaskDirective>(&D); - CodeGenFunction CGF(CGM, true); - CGOpenMPTaskOutlinedRegionInfo CGInfo(*CS, ThreadIDVar, CodeGen, - InnermostKind, - TD ? TD->hasCancel() : false, Action); - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); - llvm::Value *Res = CGF.GenerateCapturedStmtFunction(*CS); - if (!Tied) - NumberOfParts = Action.getNumberOfParts(); - return Res; -} - -static void buildStructValue(ConstantStructBuilder &Fields, CodeGenModule &CGM, - const RecordDecl *RD, const CGRecordLayout &RL, - ArrayRef<llvm::Constant *> Data) { - llvm::StructType *StructTy = RL.getLLVMType(); - unsigned PrevIdx = 0; - ConstantInitBuilder CIBuilder(CGM); - auto DI = Data.begin(); - for (const FieldDecl *FD : RD->fields()) { - unsigned Idx = RL.getLLVMFieldNo(FD); - // Fill the alignment. - for (unsigned I = PrevIdx; I < Idx; ++I) - Fields.add(llvm::Constant::getNullValue(StructTy->getElementType(I))); - PrevIdx = Idx + 1; - Fields.add(*DI); - ++DI; - } -} - -template <class... As> -static llvm::GlobalVariable * -createGlobalStruct(CodeGenModule &CGM, QualType Ty, bool IsConstant, - ArrayRef<llvm::Constant *> Data, const Twine &Name, - As &&... Args) { - const auto *RD = cast<RecordDecl>(Ty->getAsTagDecl()); - const CGRecordLayout &RL = CGM.getTypes().getCGRecordLayout(RD); - ConstantInitBuilder CIBuilder(CGM); - ConstantStructBuilder Fields = CIBuilder.beginStruct(RL.getLLVMType()); - buildStructValue(Fields, CGM, RD, RL, Data); - return Fields.finishAndCreateGlobal( - Name, CGM.getContext().getAlignOfGlobalVarInChars(Ty), IsConstant, - std::forward<As>(Args)...); -} - -template <typename T> -static void -createConstantGlobalStructAndAddToParent(CodeGenModule &CGM, QualType Ty, - ArrayRef<llvm::Constant *> Data, - T &Parent) { - const auto *RD = cast<RecordDecl>(Ty->getAsTagDecl()); - const CGRecordLayout &RL = CGM.getTypes().getCGRecordLayout(RD); - ConstantStructBuilder Fields = Parent.beginStruct(RL.getLLVMType()); - buildStructValue(Fields, CGM, RD, RL, Data); - Fields.finishAndAddTo(Parent); -} - -Address CGOpenMPRuntime::getOrCreateDefaultLocation(unsigned Flags) { - CharUnits Align = CGM.getContext().getTypeAlignInChars(IdentQTy); - unsigned Reserved2Flags = getDefaultLocationReserved2Flags(); - FlagsTy FlagsKey(Flags, Reserved2Flags); - llvm::Value *Entry = OpenMPDefaultLocMap.lookup(FlagsKey); - if (!Entry) { - if (!DefaultOpenMPPSource) { - // Initialize default location for psource field of ident_t structure of - // all ident_t objects. Format is ";file;function;line;column;;". - // Taken from - // http://llvm.org/svn/llvm-project/openmp/trunk/runtime/src/kmp_str.c - DefaultOpenMPPSource = - CGM.GetAddrOfConstantCString(";unknown;unknown;0;0;;").getPointer(); - DefaultOpenMPPSource = - llvm::ConstantExpr::getBitCast(DefaultOpenMPPSource, CGM.Int8PtrTy); - } - - llvm::Constant *Data[] = { - llvm::ConstantInt::getNullValue(CGM.Int32Ty), - llvm::ConstantInt::get(CGM.Int32Ty, Flags), - llvm::ConstantInt::get(CGM.Int32Ty, Reserved2Flags), - llvm::ConstantInt::getNullValue(CGM.Int32Ty), DefaultOpenMPPSource}; - llvm::GlobalValue *DefaultOpenMPLocation = - createGlobalStruct(CGM, IdentQTy, isDefaultLocationConstant(), Data, "", - llvm::GlobalValue::PrivateLinkage); - DefaultOpenMPLocation->setUnnamedAddr( - llvm::GlobalValue::UnnamedAddr::Global); - - OpenMPDefaultLocMap[FlagsKey] = Entry = DefaultOpenMPLocation; - } - return Address(Entry, Align); -} - -void CGOpenMPRuntime::setLocThreadIdInsertPt(CodeGenFunction &CGF, - bool AtCurrentPoint) { - auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); - assert(!Elem.second.ServiceInsertPt && "Insert point is set already."); - - llvm::Value *Undef = llvm::UndefValue::get(CGF.Int32Ty); - if (AtCurrentPoint) { - Elem.second.ServiceInsertPt = new llvm::BitCastInst( - Undef, CGF.Int32Ty, "svcpt", CGF.Builder.GetInsertBlock()); - } else { - Elem.second.ServiceInsertPt = - new llvm::BitCastInst(Undef, CGF.Int32Ty, "svcpt"); - Elem.second.ServiceInsertPt->insertAfter(CGF.AllocaInsertPt); - } -} - -void CGOpenMPRuntime::clearLocThreadIdInsertPt(CodeGenFunction &CGF) { - auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); - if (Elem.second.ServiceInsertPt) { - llvm::Instruction *Ptr = Elem.second.ServiceInsertPt; - Elem.second.ServiceInsertPt = nullptr; - Ptr->eraseFromParent(); - } -} - -llvm::Value *CGOpenMPRuntime::emitUpdateLocation(CodeGenFunction &CGF, - SourceLocation Loc, - unsigned Flags) { - Flags |= OMP_IDENT_KMPC; - // If no debug info is generated - return global default location. - if (CGM.getCodeGenOpts().getDebugInfo() == codegenoptions::NoDebugInfo || - Loc.isInvalid()) - return getOrCreateDefaultLocation(Flags).getPointer(); - - assert(CGF.CurFn && "No function in current CodeGenFunction."); - - CharUnits Align = CGM.getContext().getTypeAlignInChars(IdentQTy); - Address LocValue = Address::invalid(); - auto I = OpenMPLocThreadIDMap.find(CGF.CurFn); - if (I != OpenMPLocThreadIDMap.end()) - LocValue = Address(I->second.DebugLoc, Align); - - // OpenMPLocThreadIDMap may have null DebugLoc and non-null ThreadID, if - // GetOpenMPThreadID was called before this routine. - if (!LocValue.isValid()) { - // Generate "ident_t .kmpc_loc.addr;" - Address AI = CGF.CreateMemTemp(IdentQTy, ".kmpc_loc.addr"); - auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); - Elem.second.DebugLoc = AI.getPointer(); - LocValue = AI; - - if (!Elem.second.ServiceInsertPt) - setLocThreadIdInsertPt(CGF); - CGBuilderTy::InsertPointGuard IPG(CGF.Builder); - CGF.Builder.SetInsertPoint(Elem.second.ServiceInsertPt); - CGF.Builder.CreateMemCpy(LocValue, getOrCreateDefaultLocation(Flags), - CGF.getTypeSize(IdentQTy)); - } - - // char **psource = &.kmpc_loc_<flags>.addr.psource; - LValue Base = CGF.MakeAddrLValue(LocValue, IdentQTy); - auto Fields = cast<RecordDecl>(IdentQTy->getAsTagDecl())->field_begin(); - LValue PSource = - CGF.EmitLValueForField(Base, *std::next(Fields, IdentField_PSource)); - - llvm::Value *OMPDebugLoc = OpenMPDebugLocMap.lookup(Loc.getRawEncoding()); - if (OMPDebugLoc == nullptr) { - SmallString<128> Buffer2; - llvm::raw_svector_ostream OS2(Buffer2); - // Build debug location - PresumedLoc PLoc = CGF.getContext().getSourceManager().getPresumedLoc(Loc); - OS2 << ";" << PLoc.getFilename() << ";"; - if (const auto *FD = dyn_cast_or_null<FunctionDecl>(CGF.CurFuncDecl)) - OS2 << FD->getQualifiedNameAsString(); - OS2 << ";" << PLoc.getLine() << ";" << PLoc.getColumn() << ";;"; - OMPDebugLoc = CGF.Builder.CreateGlobalStringPtr(OS2.str()); - OpenMPDebugLocMap[Loc.getRawEncoding()] = OMPDebugLoc; - } - // *psource = ";<File>;<Function>;<Line>;<Column>;;"; - CGF.EmitStoreOfScalar(OMPDebugLoc, PSource); - - // Our callers always pass this to a runtime function, so for - // convenience, go ahead and return a naked pointer. - return LocValue.getPointer(); -} - -llvm::Value *CGOpenMPRuntime::getThreadID(CodeGenFunction &CGF, - SourceLocation Loc) { - assert(CGF.CurFn && "No function in current CodeGenFunction."); - - llvm::Value *ThreadID = nullptr; - // Check whether we've already cached a load of the thread id in this - // function. - auto I = OpenMPLocThreadIDMap.find(CGF.CurFn); - if (I != OpenMPLocThreadIDMap.end()) { - ThreadID = I->second.ThreadID; - if (ThreadID != nullptr) - return ThreadID; - } - // If exceptions are enabled, do not use parameter to avoid possible crash. - if (!CGF.EHStack.requiresLandingPad() || !CGF.getLangOpts().Exceptions || - !CGF.getLangOpts().CXXExceptions || - CGF.Builder.GetInsertBlock() == CGF.AllocaInsertPt->getParent()) { - if (auto *OMPRegionInfo = - dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { - if (OMPRegionInfo->getThreadIDVariable()) { - // Check if this an outlined function with thread id passed as argument. - LValue LVal = OMPRegionInfo->getThreadIDVariableLValue(CGF); - ThreadID = CGF.EmitLoadOfScalar(LVal, Loc); - // If value loaded in entry block, cache it and use it everywhere in - // function. - if (CGF.Builder.GetInsertBlock() == CGF.AllocaInsertPt->getParent()) { - auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); - Elem.second.ThreadID = ThreadID; - } - return ThreadID; - } - } - } - - // This is not an outlined function region - need to call __kmpc_int32 - // kmpc_global_thread_num(ident_t *loc). - // Generate thread id value and cache this value for use across the - // function. - auto &Elem = OpenMPLocThreadIDMap.FindAndConstruct(CGF.CurFn); - if (!Elem.second.ServiceInsertPt) - setLocThreadIdInsertPt(CGF); - CGBuilderTy::InsertPointGuard IPG(CGF.Builder); - CGF.Builder.SetInsertPoint(Elem.second.ServiceInsertPt); - llvm::CallInst *Call = CGF.Builder.CreateCall( - createRuntimeFunction(OMPRTL__kmpc_global_thread_num), - emitUpdateLocation(CGF, Loc)); - Call->setCallingConv(CGF.getRuntimeCC()); - Elem.second.ThreadID = Call; - return Call; -} - -void CGOpenMPRuntime::functionFinished(CodeGenFunction &CGF) { - assert(CGF.CurFn && "No function in current CodeGenFunction."); - if (OpenMPLocThreadIDMap.count(CGF.CurFn)) { - clearLocThreadIdInsertPt(CGF); - OpenMPLocThreadIDMap.erase(CGF.CurFn); - } - if (FunctionUDRMap.count(CGF.CurFn) > 0) { - for(auto *D : FunctionUDRMap[CGF.CurFn]) - UDRMap.erase(D); - FunctionUDRMap.erase(CGF.CurFn); - } -} - -llvm::Type *CGOpenMPRuntime::getIdentTyPointerTy() { - return IdentTy->getPointerTo(); -} - -llvm::Type *CGOpenMPRuntime::getKmpc_MicroPointerTy() { - if (!Kmpc_MicroTy) { - // Build void (*kmpc_micro)(kmp_int32 *global_tid, kmp_int32 *bound_tid,...) - llvm::Type *MicroParams[] = {llvm::PointerType::getUnqual(CGM.Int32Ty), - llvm::PointerType::getUnqual(CGM.Int32Ty)}; - Kmpc_MicroTy = llvm::FunctionType::get(CGM.VoidTy, MicroParams, true); - } - return llvm::PointerType::getUnqual(Kmpc_MicroTy); -} - -llvm::Constant * -CGOpenMPRuntime::createRuntimeFunction(unsigned Function) { - llvm::Constant *RTLFn = nullptr; - switch (static_cast<OpenMPRTLFunction>(Function)) { - case OMPRTL__kmpc_fork_call: { - // Build void __kmpc_fork_call(ident_t *loc, kmp_int32 argc, kmpc_micro - // microtask, ...); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - getKmpc_MicroPointerTy()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ true); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_fork_call"); - break; - } - case OMPRTL__kmpc_global_thread_num: { - // Build kmp_int32 __kmpc_global_thread_num(ident_t *loc); - llvm::Type *TypeParams[] = {getIdentTyPointerTy()}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_global_thread_num"); - break; - } - case OMPRTL__kmpc_threadprivate_cached: { - // Build void *__kmpc_threadprivate_cached(ident_t *loc, - // kmp_int32 global_tid, void *data, size_t size, void ***cache); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.VoidPtrTy, CGM.SizeTy, - CGM.VoidPtrTy->getPointerTo()->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_threadprivate_cached"); - break; - } - case OMPRTL__kmpc_critical: { - // Build void __kmpc_critical(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *crit); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, - llvm::PointerType::getUnqual(KmpCriticalNameTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_critical"); - break; - } - case OMPRTL__kmpc_critical_with_hint: { - // Build void __kmpc_critical_with_hint(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *crit, uintptr_t hint); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - llvm::PointerType::getUnqual(KmpCriticalNameTy), - CGM.IntPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_critical_with_hint"); - break; - } - case OMPRTL__kmpc_threadprivate_register: { - // Build void __kmpc_threadprivate_register(ident_t *, void *data, - // kmpc_ctor ctor, kmpc_cctor cctor, kmpc_dtor dtor); - // typedef void *(*kmpc_ctor)(void *); - auto *KmpcCtorTy = - llvm::FunctionType::get(CGM.VoidPtrTy, CGM.VoidPtrTy, - /*isVarArg*/ false)->getPointerTo(); - // typedef void *(*kmpc_cctor)(void *, void *); - llvm::Type *KmpcCopyCtorTyArgs[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; - auto *KmpcCopyCtorTy = - llvm::FunctionType::get(CGM.VoidPtrTy, KmpcCopyCtorTyArgs, - /*isVarArg*/ false) - ->getPointerTo(); - // typedef void (*kmpc_dtor)(void *); - auto *KmpcDtorTy = - llvm::FunctionType::get(CGM.VoidTy, CGM.VoidPtrTy, /*isVarArg*/ false) - ->getPointerTo(); - llvm::Type *FnTyArgs[] = {getIdentTyPointerTy(), CGM.VoidPtrTy, KmpcCtorTy, - KmpcCopyCtorTy, KmpcDtorTy}; - auto *FnTy = llvm::FunctionType::get(CGM.VoidTy, FnTyArgs, - /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_threadprivate_register"); - break; - } - case OMPRTL__kmpc_end_critical: { - // Build void __kmpc_end_critical(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *crit); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, - llvm::PointerType::getUnqual(KmpCriticalNameTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_critical"); - break; - } - case OMPRTL__kmpc_cancel_barrier: { - // Build kmp_int32 __kmpc_cancel_barrier(ident_t *loc, kmp_int32 - // global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name*/ "__kmpc_cancel_barrier"); - break; - } - case OMPRTL__kmpc_barrier: { - // Build void __kmpc_barrier(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name*/ "__kmpc_barrier"); - break; - } - case OMPRTL__kmpc_for_static_fini: { - // Build void __kmpc_for_static_fini(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_for_static_fini"); - break; - } - case OMPRTL__kmpc_push_num_threads: { - // Build void __kmpc_push_num_threads(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 num_threads) - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_push_num_threads"); - break; - } - case OMPRTL__kmpc_serialized_parallel: { - // Build void __kmpc_serialized_parallel(ident_t *loc, kmp_int32 - // global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_serialized_parallel"); - break; - } - case OMPRTL__kmpc_end_serialized_parallel: { - // Build void __kmpc_end_serialized_parallel(ident_t *loc, kmp_int32 - // global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_serialized_parallel"); - break; - } - case OMPRTL__kmpc_flush: { - // Build void __kmpc_flush(ident_t *loc); - llvm::Type *TypeParams[] = {getIdentTyPointerTy()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_flush"); - break; - } - case OMPRTL__kmpc_master: { - // Build kmp_int32 __kmpc_master(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_master"); - break; - } - case OMPRTL__kmpc_end_master: { - // Build void __kmpc_end_master(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_master"); - break; - } - case OMPRTL__kmpc_omp_taskyield: { - // Build kmp_int32 __kmpc_omp_taskyield(ident_t *, kmp_int32 global_tid, - // int end_part); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_taskyield"); - break; - } - case OMPRTL__kmpc_single: { - // Build kmp_int32 __kmpc_single(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_single"); - break; - } - case OMPRTL__kmpc_end_single: { - // Build void __kmpc_end_single(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_single"); - break; - } - case OMPRTL__kmpc_omp_task_alloc: { - // Build kmp_task_t *__kmpc_omp_task_alloc(ident_t *, kmp_int32 gtid, - // kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, - // kmp_routine_entry_t *task_entry); - assert(KmpRoutineEntryPtrTy != nullptr && - "Type kmp_routine_entry_t must be created."); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, - CGM.SizeTy, CGM.SizeTy, KmpRoutineEntryPtrTy}; - // Return void * and then cast to particular kmp_task_t type. - auto *FnTy = - llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task_alloc"); - break; - } - case OMPRTL__kmpc_omp_task: { - // Build kmp_int32 __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t - // *new_task); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task"); - break; - } - case OMPRTL__kmpc_copyprivate: { - // Build void __kmpc_copyprivate(ident_t *loc, kmp_int32 global_tid, - // size_t cpy_size, void *cpy_data, void(*cpy_func)(void *, void *), - // kmp_int32 didit); - llvm::Type *CpyTypeParams[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; - auto *CpyFnTy = - llvm::FunctionType::get(CGM.VoidTy, CpyTypeParams, /*isVarArg=*/false); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.SizeTy, - CGM.VoidPtrTy, CpyFnTy->getPointerTo(), - CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_copyprivate"); - break; - } - case OMPRTL__kmpc_reduce: { - // Build kmp_int32 __kmpc_reduce(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 num_vars, size_t reduce_size, void *reduce_data, void - // (*reduce_func)(void *lhs_data, void *rhs_data), kmp_critical_name *lck); - llvm::Type *ReduceTypeParams[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; - auto *ReduceFnTy = llvm::FunctionType::get(CGM.VoidTy, ReduceTypeParams, - /*isVarArg=*/false); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, CGM.SizeTy, - CGM.VoidPtrTy, ReduceFnTy->getPointerTo(), - llvm::PointerType::getUnqual(KmpCriticalNameTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_reduce"); - break; - } - case OMPRTL__kmpc_reduce_nowait: { - // Build kmp_int32 __kmpc_reduce_nowait(ident_t *loc, kmp_int32 - // global_tid, kmp_int32 num_vars, size_t reduce_size, void *reduce_data, - // void (*reduce_func)(void *lhs_data, void *rhs_data), kmp_critical_name - // *lck); - llvm::Type *ReduceTypeParams[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; - auto *ReduceFnTy = llvm::FunctionType::get(CGM.VoidTy, ReduceTypeParams, - /*isVarArg=*/false); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, CGM.SizeTy, - CGM.VoidPtrTy, ReduceFnTy->getPointerTo(), - llvm::PointerType::getUnqual(KmpCriticalNameTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_reduce_nowait"); - break; - } - case OMPRTL__kmpc_end_reduce: { - // Build void __kmpc_end_reduce(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *lck); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, - llvm::PointerType::getUnqual(KmpCriticalNameTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_reduce"); - break; - } - case OMPRTL__kmpc_end_reduce_nowait: { - // Build __kmpc_end_reduce_nowait(ident_t *loc, kmp_int32 global_tid, - // kmp_critical_name *lck); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, - llvm::PointerType::getUnqual(KmpCriticalNameTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = - CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_end_reduce_nowait"); - break; - } - case OMPRTL__kmpc_omp_task_begin_if0: { - // Build void __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t - // *new_task); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = - CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task_begin_if0"); - break; - } - case OMPRTL__kmpc_omp_task_complete_if0: { - // Build void __kmpc_omp_task(ident_t *, kmp_int32 gtid, kmp_task_t - // *new_task); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, - /*Name=*/"__kmpc_omp_task_complete_if0"); - break; - } - case OMPRTL__kmpc_ordered: { - // Build void __kmpc_ordered(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_ordered"); - break; - } - case OMPRTL__kmpc_end_ordered: { - // Build void __kmpc_end_ordered(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_ordered"); - break; - } - case OMPRTL__kmpc_omp_taskwait: { - // Build kmp_int32 __kmpc_omp_taskwait(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_omp_taskwait"); - break; - } - case OMPRTL__kmpc_taskgroup: { - // Build void __kmpc_taskgroup(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_taskgroup"); - break; - } - case OMPRTL__kmpc_end_taskgroup: { - // Build void __kmpc_end_taskgroup(ident_t *loc, kmp_int32 global_tid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_end_taskgroup"); - break; - } - case OMPRTL__kmpc_push_proc_bind: { - // Build void __kmpc_push_proc_bind(ident_t *loc, kmp_int32 global_tid, - // int proc_bind) - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_push_proc_bind"); - break; - } - case OMPRTL__kmpc_omp_task_with_deps: { - // Build kmp_int32 __kmpc_omp_task_with_deps(ident_t *, kmp_int32 gtid, - // kmp_task_t *new_task, kmp_int32 ndeps, kmp_depend_info_t *dep_list, - // kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), CGM.Int32Ty, CGM.VoidPtrTy, CGM.Int32Ty, - CGM.VoidPtrTy, CGM.Int32Ty, CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg=*/false); - RTLFn = - CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_task_with_deps"); - break; - } - case OMPRTL__kmpc_omp_wait_deps: { - // Build void __kmpc_omp_wait_deps(ident_t *, kmp_int32 gtid, - // kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 ndeps_noalias, - // kmp_depend_info_t *noalias_dep_list); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.Int32Ty, CGM.VoidPtrTy, - CGM.Int32Ty, CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_omp_wait_deps"); - break; - } - case OMPRTL__kmpc_cancellationpoint: { - // Build kmp_int32 __kmpc_cancellationpoint(ident_t *loc, kmp_int32 - // global_tid, kmp_int32 cncl_kind) - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_cancellationpoint"); - break; - } - case OMPRTL__kmpc_cancel: { - // Build kmp_int32 __kmpc_cancel(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 cncl_kind) - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.IntTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_cancel"); - break; - } - case OMPRTL__kmpc_push_num_teams: { - // Build void kmpc_push_num_teams (ident_t loc, kmp_int32 global_tid, - // kmp_int32 num_teams, kmp_int32 num_threads) - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, CGM.Int32Ty, - CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_push_num_teams"); - break; - } - case OMPRTL__kmpc_fork_teams: { - // Build void __kmpc_fork_teams(ident_t *loc, kmp_int32 argc, kmpc_micro - // microtask, ...); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - getKmpc_MicroPointerTy()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ true); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_fork_teams"); - break; - } - case OMPRTL__kmpc_taskloop: { - // Build void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t *task, int - // if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int nogroup, int - // sched, kmp_uint64 grainsize, void *task_dup); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), - CGM.IntTy, - CGM.VoidPtrTy, - CGM.IntTy, - CGM.Int64Ty->getPointerTo(), - CGM.Int64Ty->getPointerTo(), - CGM.Int64Ty, - CGM.IntTy, - CGM.IntTy, - CGM.Int64Ty, - CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_taskloop"); - break; - } - case OMPRTL__kmpc_doacross_init: { - // Build void __kmpc_doacross_init(ident_t *loc, kmp_int32 gtid, kmp_int32 - // num_dims, struct kmp_dim *dims); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), - CGM.Int32Ty, - CGM.Int32Ty, - CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_doacross_init"); - break; - } - case OMPRTL__kmpc_doacross_fini: { - // Build void __kmpc_doacross_fini(ident_t *loc, kmp_int32 gtid); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_doacross_fini"); - break; - } - case OMPRTL__kmpc_doacross_post: { - // Build void __kmpc_doacross_post(ident_t *loc, kmp_int32 gtid, kmp_int64 - // *vec); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_doacross_post"); - break; - } - case OMPRTL__kmpc_doacross_wait: { - // Build void __kmpc_doacross_wait(ident_t *loc, kmp_int32 gtid, kmp_int64 - // *vec); - llvm::Type *TypeParams[] = {getIdentTyPointerTy(), CGM.Int32Ty, - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_doacross_wait"); - break; - } - case OMPRTL__kmpc_task_reduction_init: { - // Build void *__kmpc_task_reduction_init(int gtid, int num_data, void - // *data); - llvm::Type *TypeParams[] = {CGM.IntTy, CGM.IntTy, CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg=*/false); - RTLFn = - CGM.CreateRuntimeFunction(FnTy, /*Name=*/"__kmpc_task_reduction_init"); - break; - } - case OMPRTL__kmpc_task_reduction_get_th_data: { - // Build void *__kmpc_task_reduction_get_th_data(int gtid, void *tg, void - // *d); - llvm::Type *TypeParams[] = {CGM.IntTy, CGM.VoidPtrTy, CGM.VoidPtrTy}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidPtrTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction( - FnTy, /*Name=*/"__kmpc_task_reduction_get_th_data"); - break; - } - case OMPRTL__kmpc_push_target_tripcount: { - // Build void __kmpc_push_target_tripcount(int64_t device_id, kmp_uint64 - // size); - llvm::Type *TypeParams[] = {CGM.Int64Ty, CGM.Int64Ty}; - llvm::FunctionType *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__kmpc_push_target_tripcount"); - break; - } - case OMPRTL__tgt_target: { - // Build int32_t __tgt_target(int64_t device_id, void *host_ptr, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.VoidPtrTy, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target"); - break; - } - case OMPRTL__tgt_target_nowait: { - // Build int32_t __tgt_target_nowait(int64_t device_id, void *host_ptr, - // int32_t arg_num, void** args_base, void **args, size_t *arg_sizes, - // int64_t *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.VoidPtrTy, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_nowait"); - break; - } - case OMPRTL__tgt_target_teams: { - // Build int32_t __tgt_target_teams(int64_t device_id, void *host_ptr, - // int32_t arg_num, void** args_base, void **args, size_t *arg_sizes, - // int64_t *arg_types, int32_t num_teams, int32_t thread_limit); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.VoidPtrTy, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo(), - CGM.Int32Ty, - CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_teams"); - break; - } - case OMPRTL__tgt_target_teams_nowait: { - // Build int32_t __tgt_target_teams_nowait(int64_t device_id, void - // *host_ptr, int32_t arg_num, void** args_base, void **args, size_t - // *arg_sizes, int64_t *arg_types, int32_t num_teams, int32_t thread_limit); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.VoidPtrTy, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo(), - CGM.Int32Ty, - CGM.Int32Ty}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_teams_nowait"); - break; - } - case OMPRTL__tgt_register_lib: { - // Build void __tgt_register_lib(__tgt_bin_desc *desc); - QualType ParamTy = - CGM.getContext().getPointerType(getTgtBinaryDescriptorQTy()); - llvm::Type *TypeParams[] = {CGM.getTypes().ConvertTypeForMem(ParamTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_register_lib"); - break; - } - case OMPRTL__tgt_unregister_lib: { - // Build void __tgt_unregister_lib(__tgt_bin_desc *desc); - QualType ParamTy = - CGM.getContext().getPointerType(getTgtBinaryDescriptorQTy()); - llvm::Type *TypeParams[] = {CGM.getTypes().ConvertTypeForMem(ParamTy)}; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_unregister_lib"); - break; - } - case OMPRTL__tgt_target_data_begin: { - // Build void __tgt_target_data_begin(int64_t device_id, int32_t arg_num, - // void** args_base, void **args, size_t *arg_sizes, int64_t *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_data_begin"); - break; - } - case OMPRTL__tgt_target_data_begin_nowait: { - // Build void __tgt_target_data_begin_nowait(int64_t device_id, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_data_begin_nowait"); - break; - } - case OMPRTL__tgt_target_data_end: { - // Build void __tgt_target_data_end(int64_t device_id, int32_t arg_num, - // void** args_base, void **args, size_t *arg_sizes, int64_t *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_data_end"); - break; - } - case OMPRTL__tgt_target_data_end_nowait: { - // Build void __tgt_target_data_end_nowait(int64_t device_id, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_data_end_nowait"); - break; - } - case OMPRTL__tgt_target_data_update: { - // Build void __tgt_target_data_update(int64_t device_id, int32_t arg_num, - // void** args_base, void **args, size_t *arg_sizes, int64_t *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_data_update"); - break; - } - case OMPRTL__tgt_target_data_update_nowait: { - // Build void __tgt_target_data_update_nowait(int64_t device_id, int32_t - // arg_num, void** args_base, void **args, size_t *arg_sizes, int64_t - // *arg_types); - llvm::Type *TypeParams[] = {CGM.Int64Ty, - CGM.Int32Ty, - CGM.VoidPtrPtrTy, - CGM.VoidPtrPtrTy, - CGM.SizeTy->getPointerTo(), - CGM.Int64Ty->getPointerTo()}; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - RTLFn = CGM.CreateRuntimeFunction(FnTy, "__tgt_target_data_update_nowait"); - break; - } - } - assert(RTLFn && "Unable to find OpenMP runtime function"); - return RTLFn; -} - -llvm::Constant *CGOpenMPRuntime::createForStaticInitFunction(unsigned IVSize, - bool IVSigned) { - assert((IVSize == 32 || IVSize == 64) && - "IV size is not compatible with the omp runtime"); - StringRef Name = IVSize == 32 ? (IVSigned ? "__kmpc_for_static_init_4" - : "__kmpc_for_static_init_4u") - : (IVSigned ? "__kmpc_for_static_init_8" - : "__kmpc_for_static_init_8u"); - llvm::Type *ITy = IVSize == 32 ? CGM.Int32Ty : CGM.Int64Ty; - auto *PtrTy = llvm::PointerType::getUnqual(ITy); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), // loc - CGM.Int32Ty, // tid - CGM.Int32Ty, // schedtype - llvm::PointerType::getUnqual(CGM.Int32Ty), // p_lastiter - PtrTy, // p_lower - PtrTy, // p_upper - PtrTy, // p_stride - ITy, // incr - ITy // chunk - }; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - return CGM.CreateRuntimeFunction(FnTy, Name); -} - -llvm::Constant *CGOpenMPRuntime::createDispatchInitFunction(unsigned IVSize, - bool IVSigned) { - assert((IVSize == 32 || IVSize == 64) && - "IV size is not compatible with the omp runtime"); - StringRef Name = - IVSize == 32 - ? (IVSigned ? "__kmpc_dispatch_init_4" : "__kmpc_dispatch_init_4u") - : (IVSigned ? "__kmpc_dispatch_init_8" : "__kmpc_dispatch_init_8u"); - llvm::Type *ITy = IVSize == 32 ? CGM.Int32Ty : CGM.Int64Ty; - llvm::Type *TypeParams[] = { getIdentTyPointerTy(), // loc - CGM.Int32Ty, // tid - CGM.Int32Ty, // schedtype - ITy, // lower - ITy, // upper - ITy, // stride - ITy // chunk - }; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg*/ false); - return CGM.CreateRuntimeFunction(FnTy, Name); -} - -llvm::Constant *CGOpenMPRuntime::createDispatchFiniFunction(unsigned IVSize, - bool IVSigned) { - assert((IVSize == 32 || IVSize == 64) && - "IV size is not compatible with the omp runtime"); - StringRef Name = - IVSize == 32 - ? (IVSigned ? "__kmpc_dispatch_fini_4" : "__kmpc_dispatch_fini_4u") - : (IVSigned ? "__kmpc_dispatch_fini_8" : "__kmpc_dispatch_fini_8u"); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), // loc - CGM.Int32Ty, // tid - }; - auto *FnTy = - llvm::FunctionType::get(CGM.VoidTy, TypeParams, /*isVarArg=*/false); - return CGM.CreateRuntimeFunction(FnTy, Name); -} - -llvm::Constant *CGOpenMPRuntime::createDispatchNextFunction(unsigned IVSize, - bool IVSigned) { - assert((IVSize == 32 || IVSize == 64) && - "IV size is not compatible with the omp runtime"); - StringRef Name = - IVSize == 32 - ? (IVSigned ? "__kmpc_dispatch_next_4" : "__kmpc_dispatch_next_4u") - : (IVSigned ? "__kmpc_dispatch_next_8" : "__kmpc_dispatch_next_8u"); - llvm::Type *ITy = IVSize == 32 ? CGM.Int32Ty : CGM.Int64Ty; - auto *PtrTy = llvm::PointerType::getUnqual(ITy); - llvm::Type *TypeParams[] = { - getIdentTyPointerTy(), // loc - CGM.Int32Ty, // tid - llvm::PointerType::getUnqual(CGM.Int32Ty), // p_lastiter - PtrTy, // p_lower - PtrTy, // p_upper - PtrTy // p_stride - }; - auto *FnTy = - llvm::FunctionType::get(CGM.Int32Ty, TypeParams, /*isVarArg*/ false); - return CGM.CreateRuntimeFunction(FnTy, Name); -} - -Address CGOpenMPRuntime::getAddrOfDeclareTargetLink(const VarDecl *VD) { - if (CGM.getLangOpts().OpenMPSimd) - return Address::invalid(); - llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD); - if (Res && *Res == OMPDeclareTargetDeclAttr::MT_Link) { - SmallString<64> PtrName; - { - llvm::raw_svector_ostream OS(PtrName); - OS << CGM.getMangledName(GlobalDecl(VD)) << "_decl_tgt_link_ptr"; - } - llvm::Value *Ptr = CGM.getModule().getNamedValue(PtrName); - if (!Ptr) { - QualType PtrTy = CGM.getContext().getPointerType(VD->getType()); - Ptr = getOrCreateInternalVariable(CGM.getTypes().ConvertTypeForMem(PtrTy), - PtrName); - if (!CGM.getLangOpts().OpenMPIsDevice) { - auto *GV = cast<llvm::GlobalVariable>(Ptr); - GV->setLinkage(llvm::GlobalValue::ExternalLinkage); - GV->setInitializer(CGM.GetAddrOfGlobal(VD)); - } - CGM.addUsedGlobal(cast<llvm::GlobalValue>(Ptr)); - registerTargetGlobalVariable(VD, cast<llvm::Constant>(Ptr)); - } - return Address(Ptr, CGM.getContext().getDeclAlign(VD)); - } - return Address::invalid(); -} - -llvm::Constant * -CGOpenMPRuntime::getOrCreateThreadPrivateCache(const VarDecl *VD) { - assert(!CGM.getLangOpts().OpenMPUseTLS || - !CGM.getContext().getTargetInfo().isTLSSupported()); - // Lookup the entry, lazily creating it if necessary. - std::string Suffix = getName({"cache", ""}); - return getOrCreateInternalVariable( - CGM.Int8PtrPtrTy, Twine(CGM.getMangledName(VD)).concat(Suffix)); -} - -Address CGOpenMPRuntime::getAddrOfThreadPrivate(CodeGenFunction &CGF, - const VarDecl *VD, - Address VDAddr, - SourceLocation Loc) { - if (CGM.getLangOpts().OpenMPUseTLS && - CGM.getContext().getTargetInfo().isTLSSupported()) - return VDAddr; - - llvm::Type *VarTy = VDAddr.getElementType(); - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - CGF.Builder.CreatePointerCast(VDAddr.getPointer(), - CGM.Int8PtrTy), - CGM.getSize(CGM.GetTargetTypeStoreSize(VarTy)), - getOrCreateThreadPrivateCache(VD)}; - return Address(CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_threadprivate_cached), Args), - VDAddr.getAlignment()); -} - -void CGOpenMPRuntime::emitThreadPrivateVarInit( - CodeGenFunction &CGF, Address VDAddr, llvm::Value *Ctor, - llvm::Value *CopyCtor, llvm::Value *Dtor, SourceLocation Loc) { - // Call kmp_int32 __kmpc_global_thread_num(&loc) to init OpenMP runtime - // library. - llvm::Value *OMPLoc = emitUpdateLocation(CGF, Loc); - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_global_thread_num), - OMPLoc); - // Call __kmpc_threadprivate_register(&loc, &var, ctor, cctor/*NULL*/, dtor) - // to register constructor/destructor for variable. - llvm::Value *Args[] = { - OMPLoc, CGF.Builder.CreatePointerCast(VDAddr.getPointer(), CGM.VoidPtrTy), - Ctor, CopyCtor, Dtor}; - CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_threadprivate_register), Args); -} - -llvm::Function *CGOpenMPRuntime::emitThreadPrivateVarDefinition( - const VarDecl *VD, Address VDAddr, SourceLocation Loc, - bool PerformInit, CodeGenFunction *CGF) { - if (CGM.getLangOpts().OpenMPUseTLS && - CGM.getContext().getTargetInfo().isTLSSupported()) - return nullptr; - - VD = VD->getDefinition(CGM.getContext()); - if (VD && ThreadPrivateWithDefinition.insert(CGM.getMangledName(VD)).second) { - QualType ASTTy = VD->getType(); - - llvm::Value *Ctor = nullptr, *CopyCtor = nullptr, *Dtor = nullptr; - const Expr *Init = VD->getAnyInitializer(); - if (CGM.getLangOpts().CPlusPlus && PerformInit) { - // Generate function that re-emits the declaration's initializer into the - // threadprivate copy of the variable VD - CodeGenFunction CtorCGF(CGM); - FunctionArgList Args; - ImplicitParamDecl Dst(CGM.getContext(), /*DC=*/nullptr, Loc, - /*Id=*/nullptr, CGM.getContext().VoidPtrTy, - ImplicitParamDecl::Other); - Args.push_back(&Dst); - - const auto &FI = CGM.getTypes().arrangeBuiltinFunctionDeclaration( - CGM.getContext().VoidPtrTy, Args); - llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI); - std::string Name = getName({"__kmpc_global_ctor_", ""}); - llvm::Function *Fn = - CGM.CreateGlobalInitOrDestructFunction(FTy, Name, FI, Loc); - CtorCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidPtrTy, Fn, FI, - Args, Loc, Loc); - llvm::Value *ArgVal = CtorCGF.EmitLoadOfScalar( - CtorCGF.GetAddrOfLocalVar(&Dst), /*Volatile=*/false, - CGM.getContext().VoidPtrTy, Dst.getLocation()); - Address Arg = Address(ArgVal, VDAddr.getAlignment()); - Arg = CtorCGF.Builder.CreateElementBitCast( - Arg, CtorCGF.ConvertTypeForMem(ASTTy)); - CtorCGF.EmitAnyExprToMem(Init, Arg, Init->getType().getQualifiers(), - /*IsInitializer=*/true); - ArgVal = CtorCGF.EmitLoadOfScalar( - CtorCGF.GetAddrOfLocalVar(&Dst), /*Volatile=*/false, - CGM.getContext().VoidPtrTy, Dst.getLocation()); - CtorCGF.Builder.CreateStore(ArgVal, CtorCGF.ReturnValue); - CtorCGF.FinishFunction(); - Ctor = Fn; - } - if (VD->getType().isDestructedType() != QualType::DK_none) { - // Generate function that emits destructor call for the threadprivate copy - // of the variable VD - CodeGenFunction DtorCGF(CGM); - FunctionArgList Args; - ImplicitParamDecl Dst(CGM.getContext(), /*DC=*/nullptr, Loc, - /*Id=*/nullptr, CGM.getContext().VoidPtrTy, - ImplicitParamDecl::Other); - Args.push_back(&Dst); - - const auto &FI = CGM.getTypes().arrangeBuiltinFunctionDeclaration( - CGM.getContext().VoidTy, Args); - llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI); - std::string Name = getName({"__kmpc_global_dtor_", ""}); - llvm::Function *Fn = - CGM.CreateGlobalInitOrDestructFunction(FTy, Name, FI, Loc); - auto NL = ApplyDebugLocation::CreateEmpty(DtorCGF); - DtorCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, Fn, FI, Args, - Loc, Loc); - // Create a scope with an artificial location for the body of this function. - auto AL = ApplyDebugLocation::CreateArtificial(DtorCGF); - llvm::Value *ArgVal = DtorCGF.EmitLoadOfScalar( - DtorCGF.GetAddrOfLocalVar(&Dst), - /*Volatile=*/false, CGM.getContext().VoidPtrTy, Dst.getLocation()); - DtorCGF.emitDestroy(Address(ArgVal, VDAddr.getAlignment()), ASTTy, - DtorCGF.getDestroyer(ASTTy.isDestructedType()), - DtorCGF.needsEHCleanup(ASTTy.isDestructedType())); - DtorCGF.FinishFunction(); - Dtor = Fn; - } - // Do not emit init function if it is not required. - if (!Ctor && !Dtor) - return nullptr; - - llvm::Type *CopyCtorTyArgs[] = {CGM.VoidPtrTy, CGM.VoidPtrTy}; - auto *CopyCtorTy = llvm::FunctionType::get(CGM.VoidPtrTy, CopyCtorTyArgs, - /*isVarArg=*/false) - ->getPointerTo(); - // Copying constructor for the threadprivate variable. - // Must be NULL - reserved by runtime, but currently it requires that this - // parameter is always NULL. Otherwise it fires assertion. - CopyCtor = llvm::Constant::getNullValue(CopyCtorTy); - if (Ctor == nullptr) { - auto *CtorTy = llvm::FunctionType::get(CGM.VoidPtrTy, CGM.VoidPtrTy, - /*isVarArg=*/false) - ->getPointerTo(); - Ctor = llvm::Constant::getNullValue(CtorTy); - } - if (Dtor == nullptr) { - auto *DtorTy = llvm::FunctionType::get(CGM.VoidTy, CGM.VoidPtrTy, - /*isVarArg=*/false) - ->getPointerTo(); - Dtor = llvm::Constant::getNullValue(DtorTy); - } - if (!CGF) { - auto *InitFunctionTy = - llvm::FunctionType::get(CGM.VoidTy, /*isVarArg*/ false); - std::string Name = getName({"__omp_threadprivate_init_", ""}); - llvm::Function *InitFunction = CGM.CreateGlobalInitOrDestructFunction( - InitFunctionTy, Name, CGM.getTypes().arrangeNullaryFunction()); - CodeGenFunction InitCGF(CGM); - FunctionArgList ArgList; - InitCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, InitFunction, - CGM.getTypes().arrangeNullaryFunction(), ArgList, - Loc, Loc); - emitThreadPrivateVarInit(InitCGF, VDAddr, Ctor, CopyCtor, Dtor, Loc); - InitCGF.FinishFunction(); - return InitFunction; - } - emitThreadPrivateVarInit(*CGF, VDAddr, Ctor, CopyCtor, Dtor, Loc); - } - return nullptr; -} - -/// Obtain information that uniquely identifies a target entry. This -/// consists of the file and device IDs as well as line number associated with -/// the relevant entry source location. -static void getTargetEntryUniqueInfo(ASTContext &C, SourceLocation Loc, - unsigned &DeviceID, unsigned &FileID, - unsigned &LineNum) { - SourceManager &SM = C.getSourceManager(); - - // The loc should be always valid and have a file ID (the user cannot use - // #pragma directives in macros) - - assert(Loc.isValid() && "Source location is expected to be always valid."); - - PresumedLoc PLoc = SM.getPresumedLoc(Loc); - assert(PLoc.isValid() && "Source location is expected to be always valid."); - - llvm::sys::fs::UniqueID ID; - if (auto EC = llvm::sys::fs::getUniqueID(PLoc.getFilename(), ID)) - SM.getDiagnostics().Report(diag::err_cannot_open_file) - << PLoc.getFilename() << EC.message(); - - DeviceID = ID.getDevice(); - FileID = ID.getFile(); - LineNum = PLoc.getLine(); -} - -bool CGOpenMPRuntime::emitDeclareTargetVarDefinition(const VarDecl *VD, - llvm::GlobalVariable *Addr, - bool PerformInit) { - Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD); - if (!Res || *Res == OMPDeclareTargetDeclAttr::MT_Link) - return CGM.getLangOpts().OpenMPIsDevice; - VD = VD->getDefinition(CGM.getContext()); - if (VD && !DeclareTargetWithDefinition.insert(CGM.getMangledName(VD)).second) - return CGM.getLangOpts().OpenMPIsDevice; - - QualType ASTTy = VD->getType(); - - SourceLocation Loc = VD->getCanonicalDecl()->getBeginLoc(); - // Produce the unique prefix to identify the new target regions. We use - // the source location of the variable declaration which we know to not - // conflict with any target region. - unsigned DeviceID; - unsigned FileID; - unsigned Line; - getTargetEntryUniqueInfo(CGM.getContext(), Loc, DeviceID, FileID, Line); - SmallString<128> Buffer, Out; - { - llvm::raw_svector_ostream OS(Buffer); - OS << "__omp_offloading_" << llvm::format("_%x", DeviceID) - << llvm::format("_%x_", FileID) << VD->getName() << "_l" << Line; - } - - const Expr *Init = VD->getAnyInitializer(); - if (CGM.getLangOpts().CPlusPlus && PerformInit) { - llvm::Constant *Ctor; - llvm::Constant *ID; - if (CGM.getLangOpts().OpenMPIsDevice) { - // Generate function that re-emits the declaration's initializer into - // the threadprivate copy of the variable VD - CodeGenFunction CtorCGF(CGM); - - const CGFunctionInfo &FI = CGM.getTypes().arrangeNullaryFunction(); - llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI); - llvm::Function *Fn = CGM.CreateGlobalInitOrDestructFunction( - FTy, Twine(Buffer, "_ctor"), FI, Loc); - auto NL = ApplyDebugLocation::CreateEmpty(CtorCGF); - CtorCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, Fn, FI, - FunctionArgList(), Loc, Loc); - auto AL = ApplyDebugLocation::CreateArtificial(CtorCGF); - CtorCGF.EmitAnyExprToMem(Init, - Address(Addr, CGM.getContext().getDeclAlign(VD)), - Init->getType().getQualifiers(), - /*IsInitializer=*/true); - CtorCGF.FinishFunction(); - Ctor = Fn; - ID = llvm::ConstantExpr::getBitCast(Fn, CGM.Int8PtrTy); - CGM.addUsedGlobal(cast<llvm::GlobalValue>(Ctor)); - } else { - Ctor = new llvm::GlobalVariable( - CGM.getModule(), CGM.Int8Ty, /*isConstant=*/true, - llvm::GlobalValue::PrivateLinkage, - llvm::Constant::getNullValue(CGM.Int8Ty), Twine(Buffer, "_ctor")); - ID = Ctor; - } - - // Register the information for the entry associated with the constructor. - Out.clear(); - OffloadEntriesInfoManager.registerTargetRegionEntryInfo( - DeviceID, FileID, Twine(Buffer, "_ctor").toStringRef(Out), Line, Ctor, - ID, OffloadEntriesInfoManagerTy::OMPTargetRegionEntryCtor); - } - if (VD->getType().isDestructedType() != QualType::DK_none) { - llvm::Constant *Dtor; - llvm::Constant *ID; - if (CGM.getLangOpts().OpenMPIsDevice) { - // Generate function that emits destructor call for the threadprivate - // copy of the variable VD - CodeGenFunction DtorCGF(CGM); - - const CGFunctionInfo &FI = CGM.getTypes().arrangeNullaryFunction(); - llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI); - llvm::Function *Fn = CGM.CreateGlobalInitOrDestructFunction( - FTy, Twine(Buffer, "_dtor"), FI, Loc); - auto NL = ApplyDebugLocation::CreateEmpty(DtorCGF); - DtorCGF.StartFunction(GlobalDecl(), CGM.getContext().VoidTy, Fn, FI, - FunctionArgList(), Loc, Loc); - // Create a scope with an artificial location for the body of this - // function. - auto AL = ApplyDebugLocation::CreateArtificial(DtorCGF); - DtorCGF.emitDestroy(Address(Addr, CGM.getContext().getDeclAlign(VD)), - ASTTy, DtorCGF.getDestroyer(ASTTy.isDestructedType()), - DtorCGF.needsEHCleanup(ASTTy.isDestructedType())); - DtorCGF.FinishFunction(); - Dtor = Fn; - ID = llvm::ConstantExpr::getBitCast(Fn, CGM.Int8PtrTy); - CGM.addUsedGlobal(cast<llvm::GlobalValue>(Dtor)); - } else { - Dtor = new llvm::GlobalVariable( - CGM.getModule(), CGM.Int8Ty, /*isConstant=*/true, - llvm::GlobalValue::PrivateLinkage, - llvm::Constant::getNullValue(CGM.Int8Ty), Twine(Buffer, "_dtor")); - ID = Dtor; - } - // Register the information for the entry associated with the destructor. - Out.clear(); - OffloadEntriesInfoManager.registerTargetRegionEntryInfo( - DeviceID, FileID, Twine(Buffer, "_dtor").toStringRef(Out), Line, Dtor, - ID, OffloadEntriesInfoManagerTy::OMPTargetRegionEntryDtor); - } - return CGM.getLangOpts().OpenMPIsDevice; -} - -Address CGOpenMPRuntime::getAddrOfArtificialThreadPrivate(CodeGenFunction &CGF, - QualType VarType, - StringRef Name) { - std::string Suffix = getName({"artificial", ""}); - std::string CacheSuffix = getName({"cache", ""}); - llvm::Type *VarLVType = CGF.ConvertTypeForMem(VarType); - llvm::Value *GAddr = - getOrCreateInternalVariable(VarLVType, Twine(Name).concat(Suffix)); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, SourceLocation()), - getThreadID(CGF, SourceLocation()), - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(GAddr, CGM.VoidPtrTy), - CGF.Builder.CreateIntCast(CGF.getTypeSize(VarType), CGM.SizeTy, - /*IsSigned=*/false), - getOrCreateInternalVariable( - CGM.VoidPtrPtrTy, Twine(Name).concat(Suffix).concat(CacheSuffix))}; - return Address( - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_threadprivate_cached), Args), - VarLVType->getPointerTo(/*AddrSpace=*/0)), - CGM.getPointerAlign()); -} - -void CGOpenMPRuntime::emitOMPIfClause(CodeGenFunction &CGF, const Expr *Cond, - const RegionCodeGenTy &ThenGen, - const RegionCodeGenTy &ElseGen) { - CodeGenFunction::LexicalScope ConditionScope(CGF, Cond->getSourceRange()); - - // If the condition constant folds and can be elided, try to avoid emitting - // the condition and the dead arm of the if/else. - bool CondConstant; - if (CGF.ConstantFoldsToSimpleInteger(Cond, CondConstant)) { - if (CondConstant) - ThenGen(CGF); - else - ElseGen(CGF); - return; - } - - // Otherwise, the condition did not fold, or we couldn't elide it. Just - // emit the conditional branch. - llvm::BasicBlock *ThenBlock = CGF.createBasicBlock("omp_if.then"); - llvm::BasicBlock *ElseBlock = CGF.createBasicBlock("omp_if.else"); - llvm::BasicBlock *ContBlock = CGF.createBasicBlock("omp_if.end"); - CGF.EmitBranchOnBoolExpr(Cond, ThenBlock, ElseBlock, /*TrueCount=*/0); - - // Emit the 'then' code. - CGF.EmitBlock(ThenBlock); - ThenGen(CGF); - CGF.EmitBranch(ContBlock); - // Emit the 'else' code if present. - // There is no need to emit line number for unconditional branch. - (void)ApplyDebugLocation::CreateEmpty(CGF); - CGF.EmitBlock(ElseBlock); - ElseGen(CGF); - // There is no need to emit line number for unconditional branch. - (void)ApplyDebugLocation::CreateEmpty(CGF); - CGF.EmitBranch(ContBlock); - // Emit the continuation block for code after the if. - CGF.EmitBlock(ContBlock, /*IsFinished=*/true); -} - -void CGOpenMPRuntime::emitParallelCall(CodeGenFunction &CGF, SourceLocation Loc, - llvm::Value *OutlinedFn, - ArrayRef<llvm::Value *> CapturedVars, - const Expr *IfCond) { - if (!CGF.HaveInsertPoint()) - return; - llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc); - auto &&ThenGen = [OutlinedFn, CapturedVars, RTLoc](CodeGenFunction &CGF, - PrePostActionTy &) { - // Build call __kmpc_fork_call(loc, n, microtask, var1, .., varn); - CGOpenMPRuntime &RT = CGF.CGM.getOpenMPRuntime(); - llvm::Value *Args[] = { - RTLoc, - CGF.Builder.getInt32(CapturedVars.size()), // Number of captured vars - CGF.Builder.CreateBitCast(OutlinedFn, RT.getKmpc_MicroPointerTy())}; - llvm::SmallVector<llvm::Value *, 16> RealArgs; - RealArgs.append(std::begin(Args), std::end(Args)); - RealArgs.append(CapturedVars.begin(), CapturedVars.end()); - - llvm::Value *RTLFn = RT.createRuntimeFunction(OMPRTL__kmpc_fork_call); - CGF.EmitRuntimeCall(RTLFn, RealArgs); - }; - auto &&ElseGen = [OutlinedFn, CapturedVars, RTLoc, Loc](CodeGenFunction &CGF, - PrePostActionTy &) { - CGOpenMPRuntime &RT = CGF.CGM.getOpenMPRuntime(); - llvm::Value *ThreadID = RT.getThreadID(CGF, Loc); - // Build calls: - // __kmpc_serialized_parallel(&Loc, GTid); - llvm::Value *Args[] = {RTLoc, ThreadID}; - CGF.EmitRuntimeCall( - RT.createRuntimeFunction(OMPRTL__kmpc_serialized_parallel), Args); - - // OutlinedFn(>id, &zero, CapturedStruct); - Address ZeroAddr = CGF.CreateDefaultAlignTempAlloca(CGF.Int32Ty, - /*Name*/ ".zero.addr"); - CGF.InitTempAlloca(ZeroAddr, CGF.Builder.getInt32(/*C*/ 0)); - llvm::SmallVector<llvm::Value *, 16> OutlinedFnArgs; - // ThreadId for serialized parallels is 0. - OutlinedFnArgs.push_back(ZeroAddr.getPointer()); - OutlinedFnArgs.push_back(ZeroAddr.getPointer()); - OutlinedFnArgs.append(CapturedVars.begin(), CapturedVars.end()); - RT.emitOutlinedFunctionCall(CGF, Loc, OutlinedFn, OutlinedFnArgs); - - // __kmpc_end_serialized_parallel(&Loc, GTid); - llvm::Value *EndArgs[] = {RT.emitUpdateLocation(CGF, Loc), ThreadID}; - CGF.EmitRuntimeCall( - RT.createRuntimeFunction(OMPRTL__kmpc_end_serialized_parallel), - EndArgs); - }; - if (IfCond) { - emitOMPIfClause(CGF, IfCond, ThenGen, ElseGen); - } else { - RegionCodeGenTy ThenRCG(ThenGen); - ThenRCG(CGF); - } -} - -// If we're inside an (outlined) parallel region, use the region info's -// thread-ID variable (it is passed in a first argument of the outlined function -// as "kmp_int32 *gtid"). Otherwise, if we're not inside parallel region, but in -// regular serial code region, get thread ID by calling kmp_int32 -// kmpc_global_thread_num(ident_t *loc), stash this thread ID in a temporary and -// return the address of that temp. -Address CGOpenMPRuntime::emitThreadIDAddress(CodeGenFunction &CGF, - SourceLocation Loc) { - if (auto *OMPRegionInfo = - dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) - if (OMPRegionInfo->getThreadIDVariable()) - return OMPRegionInfo->getThreadIDVariableLValue(CGF).getAddress(); - - llvm::Value *ThreadID = getThreadID(CGF, Loc); - QualType Int32Ty = - CGF.getContext().getIntTypeForBitwidth(/*DestWidth*/ 32, /*Signed*/ true); - Address ThreadIDTemp = CGF.CreateMemTemp(Int32Ty, /*Name*/ ".threadid_temp."); - CGF.EmitStoreOfScalar(ThreadID, - CGF.MakeAddrLValue(ThreadIDTemp, Int32Ty)); - - return ThreadIDTemp; -} - -llvm::Constant * -CGOpenMPRuntime::getOrCreateInternalVariable(llvm::Type *Ty, - const llvm::Twine &Name) { - SmallString<256> Buffer; - llvm::raw_svector_ostream Out(Buffer); - Out << Name; - StringRef RuntimeName = Out.str(); - auto &Elem = *InternalVars.try_emplace(RuntimeName, nullptr).first; - if (Elem.second) { - assert(Elem.second->getType()->getPointerElementType() == Ty && - "OMP internal variable has different type than requested"); - return &*Elem.second; - } - - return Elem.second = new llvm::GlobalVariable( - CGM.getModule(), Ty, /*IsConstant*/ false, - llvm::GlobalValue::CommonLinkage, llvm::Constant::getNullValue(Ty), - Elem.first()); -} - -llvm::Value *CGOpenMPRuntime::getCriticalRegionLock(StringRef CriticalName) { - std::string Prefix = Twine("gomp_critical_user_", CriticalName).str(); - std::string Name = getName({Prefix, "var"}); - return getOrCreateInternalVariable(KmpCriticalNameTy, Name); -} - -namespace { -/// Common pre(post)-action for different OpenMP constructs. -class CommonActionTy final : public PrePostActionTy { - llvm::Value *EnterCallee; - ArrayRef<llvm::Value *> EnterArgs; - llvm::Value *ExitCallee; - ArrayRef<llvm::Value *> ExitArgs; - bool Conditional; - llvm::BasicBlock *ContBlock = nullptr; - -public: - CommonActionTy(llvm::Value *EnterCallee, ArrayRef<llvm::Value *> EnterArgs, - llvm::Value *ExitCallee, ArrayRef<llvm::Value *> ExitArgs, - bool Conditional = false) - : EnterCallee(EnterCallee), EnterArgs(EnterArgs), ExitCallee(ExitCallee), - ExitArgs(ExitArgs), Conditional(Conditional) {} - void Enter(CodeGenFunction &CGF) override { - llvm::Value *EnterRes = CGF.EmitRuntimeCall(EnterCallee, EnterArgs); - if (Conditional) { - llvm::Value *CallBool = CGF.Builder.CreateIsNotNull(EnterRes); - auto *ThenBlock = CGF.createBasicBlock("omp_if.then"); - ContBlock = CGF.createBasicBlock("omp_if.end"); - // Generate the branch (If-stmt) - CGF.Builder.CreateCondBr(CallBool, ThenBlock, ContBlock); - CGF.EmitBlock(ThenBlock); - } - } - void Done(CodeGenFunction &CGF) { - // Emit the rest of blocks/branches - CGF.EmitBranch(ContBlock); - CGF.EmitBlock(ContBlock, true); - } - void Exit(CodeGenFunction &CGF) override { - CGF.EmitRuntimeCall(ExitCallee, ExitArgs); - } -}; -} // anonymous namespace - -void CGOpenMPRuntime::emitCriticalRegion(CodeGenFunction &CGF, - StringRef CriticalName, - const RegionCodeGenTy &CriticalOpGen, - SourceLocation Loc, const Expr *Hint) { - // __kmpc_critical[_with_hint](ident_t *, gtid, Lock[, hint]); - // CriticalOpGen(); - // __kmpc_end_critical(ident_t *, gtid, Lock); - // Prepare arguments and build a call to __kmpc_critical - if (!CGF.HaveInsertPoint()) - return; - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - getCriticalRegionLock(CriticalName)}; - llvm::SmallVector<llvm::Value *, 4> EnterArgs(std::begin(Args), - std::end(Args)); - if (Hint) { - EnterArgs.push_back(CGF.Builder.CreateIntCast( - CGF.EmitScalarExpr(Hint), CGM.IntPtrTy, /*isSigned=*/false)); - } - CommonActionTy Action( - createRuntimeFunction(Hint ? OMPRTL__kmpc_critical_with_hint - : OMPRTL__kmpc_critical), - EnterArgs, createRuntimeFunction(OMPRTL__kmpc_end_critical), Args); - CriticalOpGen.setAction(Action); - emitInlinedDirective(CGF, OMPD_critical, CriticalOpGen); -} - -void CGOpenMPRuntime::emitMasterRegion(CodeGenFunction &CGF, - const RegionCodeGenTy &MasterOpGen, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // if(__kmpc_master(ident_t *, gtid)) { - // MasterOpGen(); - // __kmpc_end_master(ident_t *, gtid); - // } - // Prepare arguments and build a call to __kmpc_master - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; - CommonActionTy Action(createRuntimeFunction(OMPRTL__kmpc_master), Args, - createRuntimeFunction(OMPRTL__kmpc_end_master), Args, - /*Conditional=*/true); - MasterOpGen.setAction(Action); - emitInlinedDirective(CGF, OMPD_master, MasterOpGen); - Action.Done(CGF); -} - -void CGOpenMPRuntime::emitTaskyieldCall(CodeGenFunction &CGF, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // Build call __kmpc_omp_taskyield(loc, thread_id, 0); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - llvm::ConstantInt::get(CGM.IntTy, /*V=*/0, /*isSigned=*/true)}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_taskyield), Args); - if (auto *Region = dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) - Region->emitUntiedSwitch(CGF); -} - -void CGOpenMPRuntime::emitTaskgroupRegion(CodeGenFunction &CGF, - const RegionCodeGenTy &TaskgroupOpGen, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // __kmpc_taskgroup(ident_t *, gtid); - // TaskgroupOpGen(); - // __kmpc_end_taskgroup(ident_t *, gtid); - // Prepare arguments and build a call to __kmpc_taskgroup - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; - CommonActionTy Action(createRuntimeFunction(OMPRTL__kmpc_taskgroup), Args, - createRuntimeFunction(OMPRTL__kmpc_end_taskgroup), - Args); - TaskgroupOpGen.setAction(Action); - emitInlinedDirective(CGF, OMPD_taskgroup, TaskgroupOpGen); -} - -/// Given an array of pointers to variables, project the address of a -/// given variable. -static Address emitAddrOfVarFromArray(CodeGenFunction &CGF, Address Array, - unsigned Index, const VarDecl *Var) { - // Pull out the pointer to the variable. - Address PtrAddr = - CGF.Builder.CreateConstArrayGEP(Array, Index, CGF.getPointerSize()); - llvm::Value *Ptr = CGF.Builder.CreateLoad(PtrAddr); - - Address Addr = Address(Ptr, CGF.getContext().getDeclAlign(Var)); - Addr = CGF.Builder.CreateElementBitCast( - Addr, CGF.ConvertTypeForMem(Var->getType())); - return Addr; -} - -static llvm::Value *emitCopyprivateCopyFunction( - CodeGenModule &CGM, llvm::Type *ArgsType, - ArrayRef<const Expr *> CopyprivateVars, ArrayRef<const Expr *> DestExprs, - ArrayRef<const Expr *> SrcExprs, ArrayRef<const Expr *> AssignmentOps, - SourceLocation Loc) { - ASTContext &C = CGM.getContext(); - // void copy_func(void *LHSArg, void *RHSArg); - FunctionArgList Args; - ImplicitParamDecl LHSArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - ImplicitParamDecl RHSArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - Args.push_back(&LHSArg); - Args.push_back(&RHSArg); - const auto &CGFI = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - std::string Name = - CGM.getOpenMPRuntime().getName({"omp", "copyprivate", "copy_func"}); - auto *Fn = llvm::Function::Create(CGM.getTypes().GetFunctionType(CGFI), - llvm::GlobalValue::InternalLinkage, Name, - &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI); - Fn->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc); - // Dest = (void*[n])(LHSArg); - // Src = (void*[n])(RHSArg); - Address LHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&LHSArg)), - ArgsType), CGF.getPointerAlign()); - Address RHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&RHSArg)), - ArgsType), CGF.getPointerAlign()); - // *(Type0*)Dst[0] = *(Type0*)Src[0]; - // *(Type1*)Dst[1] = *(Type1*)Src[1]; - // ... - // *(Typen*)Dst[n] = *(Typen*)Src[n]; - for (unsigned I = 0, E = AssignmentOps.size(); I < E; ++I) { - const auto *DestVar = - cast<VarDecl>(cast<DeclRefExpr>(DestExprs[I])->getDecl()); - Address DestAddr = emitAddrOfVarFromArray(CGF, LHS, I, DestVar); - - const auto *SrcVar = - cast<VarDecl>(cast<DeclRefExpr>(SrcExprs[I])->getDecl()); - Address SrcAddr = emitAddrOfVarFromArray(CGF, RHS, I, SrcVar); - - const auto *VD = cast<DeclRefExpr>(CopyprivateVars[I])->getDecl(); - QualType Type = VD->getType(); - CGF.EmitOMPCopy(Type, DestAddr, SrcAddr, DestVar, SrcVar, AssignmentOps[I]); - } - CGF.FinishFunction(); - return Fn; -} - -void CGOpenMPRuntime::emitSingleRegion(CodeGenFunction &CGF, - const RegionCodeGenTy &SingleOpGen, - SourceLocation Loc, - ArrayRef<const Expr *> CopyprivateVars, - ArrayRef<const Expr *> SrcExprs, - ArrayRef<const Expr *> DstExprs, - ArrayRef<const Expr *> AssignmentOps) { - if (!CGF.HaveInsertPoint()) - return; - assert(CopyprivateVars.size() == SrcExprs.size() && - CopyprivateVars.size() == DstExprs.size() && - CopyprivateVars.size() == AssignmentOps.size()); - ASTContext &C = CGM.getContext(); - // int32 did_it = 0; - // if(__kmpc_single(ident_t *, gtid)) { - // SingleOpGen(); - // __kmpc_end_single(ident_t *, gtid); - // did_it = 1; - // } - // call __kmpc_copyprivate(ident_t *, gtid, <buf_size>, <copyprivate list>, - // <copy_func>, did_it); - - Address DidIt = Address::invalid(); - if (!CopyprivateVars.empty()) { - // int32 did_it = 0; - QualType KmpInt32Ty = - C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1); - DidIt = CGF.CreateMemTemp(KmpInt32Ty, ".omp.copyprivate.did_it"); - CGF.Builder.CreateStore(CGF.Builder.getInt32(0), DidIt); - } - // Prepare arguments and build a call to __kmpc_single - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; - CommonActionTy Action(createRuntimeFunction(OMPRTL__kmpc_single), Args, - createRuntimeFunction(OMPRTL__kmpc_end_single), Args, - /*Conditional=*/true); - SingleOpGen.setAction(Action); - emitInlinedDirective(CGF, OMPD_single, SingleOpGen); - if (DidIt.isValid()) { - // did_it = 1; - CGF.Builder.CreateStore(CGF.Builder.getInt32(1), DidIt); - } - Action.Done(CGF); - // call __kmpc_copyprivate(ident_t *, gtid, <buf_size>, <copyprivate list>, - // <copy_func>, did_it); - if (DidIt.isValid()) { - llvm::APInt ArraySize(/*unsigned int numBits=*/32, CopyprivateVars.size()); - QualType CopyprivateArrayTy = - C.getConstantArrayType(C.VoidPtrTy, ArraySize, ArrayType::Normal, - /*IndexTypeQuals=*/0); - // Create a list of all private variables for copyprivate. - Address CopyprivateList = - CGF.CreateMemTemp(CopyprivateArrayTy, ".omp.copyprivate.cpr_list"); - for (unsigned I = 0, E = CopyprivateVars.size(); I < E; ++I) { - Address Elem = CGF.Builder.CreateConstArrayGEP( - CopyprivateList, I, CGF.getPointerSize()); - CGF.Builder.CreateStore( - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.EmitLValue(CopyprivateVars[I]).getPointer(), CGF.VoidPtrTy), - Elem); - } - // Build function that copies private values from single region to all other - // threads in the corresponding parallel region. - llvm::Value *CpyFn = emitCopyprivateCopyFunction( - CGM, CGF.ConvertTypeForMem(CopyprivateArrayTy)->getPointerTo(), - CopyprivateVars, SrcExprs, DstExprs, AssignmentOps, Loc); - llvm::Value *BufSize = CGF.getTypeSize(CopyprivateArrayTy); - Address CL = - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(CopyprivateList, - CGF.VoidPtrTy); - llvm::Value *DidItVal = CGF.Builder.CreateLoad(DidIt); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), // ident_t *<loc> - getThreadID(CGF, Loc), // i32 <gtid> - BufSize, // size_t <buf_size> - CL.getPointer(), // void *<copyprivate list> - CpyFn, // void (*) (void *, void *) <copy_func> - DidItVal // i32 did_it - }; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_copyprivate), Args); - } -} - -void CGOpenMPRuntime::emitOrderedRegion(CodeGenFunction &CGF, - const RegionCodeGenTy &OrderedOpGen, - SourceLocation Loc, bool IsThreads) { - if (!CGF.HaveInsertPoint()) - return; - // __kmpc_ordered(ident_t *, gtid); - // OrderedOpGen(); - // __kmpc_end_ordered(ident_t *, gtid); - // Prepare arguments and build a call to __kmpc_ordered - if (IsThreads) { - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; - CommonActionTy Action(createRuntimeFunction(OMPRTL__kmpc_ordered), Args, - createRuntimeFunction(OMPRTL__kmpc_end_ordered), - Args); - OrderedOpGen.setAction(Action); - emitInlinedDirective(CGF, OMPD_ordered, OrderedOpGen); - return; - } - emitInlinedDirective(CGF, OMPD_ordered, OrderedOpGen); -} - -unsigned CGOpenMPRuntime::getDefaultFlagsForBarriers(OpenMPDirectiveKind Kind) { - unsigned Flags; - if (Kind == OMPD_for) - Flags = OMP_IDENT_BARRIER_IMPL_FOR; - else if (Kind == OMPD_sections) - Flags = OMP_IDENT_BARRIER_IMPL_SECTIONS; - else if (Kind == OMPD_single) - Flags = OMP_IDENT_BARRIER_IMPL_SINGLE; - else if (Kind == OMPD_barrier) - Flags = OMP_IDENT_BARRIER_EXPL; - else - Flags = OMP_IDENT_BARRIER_IMPL; - return Flags; -} - -void CGOpenMPRuntime::emitBarrierCall(CodeGenFunction &CGF, SourceLocation Loc, - OpenMPDirectiveKind Kind, bool EmitChecks, - bool ForceSimpleCall) { - if (!CGF.HaveInsertPoint()) - return; - // Build call __kmpc_cancel_barrier(loc, thread_id); - // Build call __kmpc_barrier(loc, thread_id); - unsigned Flags = getDefaultFlagsForBarriers(Kind); - // Build call __kmpc_cancel_barrier(loc, thread_id) or __kmpc_barrier(loc, - // thread_id); - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc, Flags), - getThreadID(CGF, Loc)}; - if (auto *OMPRegionInfo = - dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { - if (!ForceSimpleCall && OMPRegionInfo->hasCancel()) { - llvm::Value *Result = CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_cancel_barrier), Args); - if (EmitChecks) { - // if (__kmpc_cancel_barrier()) { - // exit from construct; - // } - llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".cancel.exit"); - llvm::BasicBlock *ContBB = CGF.createBasicBlock(".cancel.continue"); - llvm::Value *Cmp = CGF.Builder.CreateIsNotNull(Result); - CGF.Builder.CreateCondBr(Cmp, ExitBB, ContBB); - CGF.EmitBlock(ExitBB); - // exit from construct; - CodeGenFunction::JumpDest CancelDestination = - CGF.getOMPCancelDestination(OMPRegionInfo->getDirectiveKind()); - CGF.EmitBranchThroughCleanup(CancelDestination); - CGF.EmitBlock(ContBB, /*IsFinished=*/true); - } - return; - } - } - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_barrier), Args); -} - -/// Map the OpenMP loop schedule to the runtime enumeration. -static OpenMPSchedType getRuntimeSchedule(OpenMPScheduleClauseKind ScheduleKind, - bool Chunked, bool Ordered) { - switch (ScheduleKind) { - case OMPC_SCHEDULE_static: - return Chunked ? (Ordered ? OMP_ord_static_chunked : OMP_sch_static_chunked) - : (Ordered ? OMP_ord_static : OMP_sch_static); - case OMPC_SCHEDULE_dynamic: - return Ordered ? OMP_ord_dynamic_chunked : OMP_sch_dynamic_chunked; - case OMPC_SCHEDULE_guided: - return Ordered ? OMP_ord_guided_chunked : OMP_sch_guided_chunked; - case OMPC_SCHEDULE_runtime: - return Ordered ? OMP_ord_runtime : OMP_sch_runtime; - case OMPC_SCHEDULE_auto: - return Ordered ? OMP_ord_auto : OMP_sch_auto; - case OMPC_SCHEDULE_unknown: - assert(!Chunked && "chunk was specified but schedule kind not known"); - return Ordered ? OMP_ord_static : OMP_sch_static; - } - llvm_unreachable("Unexpected runtime schedule"); -} - -/// Map the OpenMP distribute schedule to the runtime enumeration. -static OpenMPSchedType -getRuntimeSchedule(OpenMPDistScheduleClauseKind ScheduleKind, bool Chunked) { - // only static is allowed for dist_schedule - return Chunked ? OMP_dist_sch_static_chunked : OMP_dist_sch_static; -} - -bool CGOpenMPRuntime::isStaticNonchunked(OpenMPScheduleClauseKind ScheduleKind, - bool Chunked) const { - OpenMPSchedType Schedule = - getRuntimeSchedule(ScheduleKind, Chunked, /*Ordered=*/false); - return Schedule == OMP_sch_static; -} - -bool CGOpenMPRuntime::isStaticNonchunked( - OpenMPDistScheduleClauseKind ScheduleKind, bool Chunked) const { - OpenMPSchedType Schedule = getRuntimeSchedule(ScheduleKind, Chunked); - return Schedule == OMP_dist_sch_static; -} - -bool CGOpenMPRuntime::isStaticChunked(OpenMPScheduleClauseKind ScheduleKind, - bool Chunked) const { - OpenMPSchedType Schedule = - getRuntimeSchedule(ScheduleKind, Chunked, /*Ordered=*/false); - return Schedule == OMP_sch_static_chunked; -} - -bool CGOpenMPRuntime::isStaticChunked( - OpenMPDistScheduleClauseKind ScheduleKind, bool Chunked) const { - OpenMPSchedType Schedule = getRuntimeSchedule(ScheduleKind, Chunked); - return Schedule == OMP_dist_sch_static_chunked; -} - -bool CGOpenMPRuntime::isDynamic(OpenMPScheduleClauseKind ScheduleKind) const { - OpenMPSchedType Schedule = - getRuntimeSchedule(ScheduleKind, /*Chunked=*/false, /*Ordered=*/false); - assert(Schedule != OMP_sch_static_chunked && "cannot be chunked here"); - return Schedule != OMP_sch_static; -} - -static int addMonoNonMonoModifier(OpenMPSchedType Schedule, - OpenMPScheduleClauseModifier M1, - OpenMPScheduleClauseModifier M2) { - int Modifier = 0; - switch (M1) { - case OMPC_SCHEDULE_MODIFIER_monotonic: - Modifier = OMP_sch_modifier_monotonic; - break; - case OMPC_SCHEDULE_MODIFIER_nonmonotonic: - Modifier = OMP_sch_modifier_nonmonotonic; - break; - case OMPC_SCHEDULE_MODIFIER_simd: - if (Schedule == OMP_sch_static_chunked) - Schedule = OMP_sch_static_balanced_chunked; - break; - case OMPC_SCHEDULE_MODIFIER_last: - case OMPC_SCHEDULE_MODIFIER_unknown: - break; - } - switch (M2) { - case OMPC_SCHEDULE_MODIFIER_monotonic: - Modifier = OMP_sch_modifier_monotonic; - break; - case OMPC_SCHEDULE_MODIFIER_nonmonotonic: - Modifier = OMP_sch_modifier_nonmonotonic; - break; - case OMPC_SCHEDULE_MODIFIER_simd: - if (Schedule == OMP_sch_static_chunked) - Schedule = OMP_sch_static_balanced_chunked; - break; - case OMPC_SCHEDULE_MODIFIER_last: - case OMPC_SCHEDULE_MODIFIER_unknown: - break; - } - return Schedule | Modifier; -} - -void CGOpenMPRuntime::emitForDispatchInit( - CodeGenFunction &CGF, SourceLocation Loc, - const OpenMPScheduleTy &ScheduleKind, unsigned IVSize, bool IVSigned, - bool Ordered, const DispatchRTInput &DispatchValues) { - if (!CGF.HaveInsertPoint()) - return; - OpenMPSchedType Schedule = getRuntimeSchedule( - ScheduleKind.Schedule, DispatchValues.Chunk != nullptr, Ordered); - assert(Ordered || - (Schedule != OMP_sch_static && Schedule != OMP_sch_static_chunked && - Schedule != OMP_ord_static && Schedule != OMP_ord_static_chunked && - Schedule != OMP_sch_static_balanced_chunked)); - // Call __kmpc_dispatch_init( - // ident_t *loc, kmp_int32 tid, kmp_int32 schedule, - // kmp_int[32|64] lower, kmp_int[32|64] upper, - // kmp_int[32|64] stride, kmp_int[32|64] chunk); - - // If the Chunk was not specified in the clause - use default value 1. - llvm::Value *Chunk = DispatchValues.Chunk ? DispatchValues.Chunk - : CGF.Builder.getIntN(IVSize, 1); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - CGF.Builder.getInt32(addMonoNonMonoModifier( - Schedule, ScheduleKind.M1, ScheduleKind.M2)), // Schedule type - DispatchValues.LB, // Lower - DispatchValues.UB, // Upper - CGF.Builder.getIntN(IVSize, 1), // Stride - Chunk // Chunk - }; - CGF.EmitRuntimeCall(createDispatchInitFunction(IVSize, IVSigned), Args); -} - -static void emitForStaticInitCall( - CodeGenFunction &CGF, llvm::Value *UpdateLocation, llvm::Value *ThreadId, - llvm::Constant *ForStaticInitFunction, OpenMPSchedType Schedule, - OpenMPScheduleClauseModifier M1, OpenMPScheduleClauseModifier M2, - const CGOpenMPRuntime::StaticRTInput &Values) { - if (!CGF.HaveInsertPoint()) - return; - - assert(!Values.Ordered); - assert(Schedule == OMP_sch_static || Schedule == OMP_sch_static_chunked || - Schedule == OMP_sch_static_balanced_chunked || - Schedule == OMP_ord_static || Schedule == OMP_ord_static_chunked || - Schedule == OMP_dist_sch_static || - Schedule == OMP_dist_sch_static_chunked); - - // Call __kmpc_for_static_init( - // ident_t *loc, kmp_int32 tid, kmp_int32 schedtype, - // kmp_int32 *p_lastiter, kmp_int[32|64] *p_lower, - // kmp_int[32|64] *p_upper, kmp_int[32|64] *p_stride, - // kmp_int[32|64] incr, kmp_int[32|64] chunk); - llvm::Value *Chunk = Values.Chunk; - if (Chunk == nullptr) { - assert((Schedule == OMP_sch_static || Schedule == OMP_ord_static || - Schedule == OMP_dist_sch_static) && - "expected static non-chunked schedule"); - // If the Chunk was not specified in the clause - use default value 1. - Chunk = CGF.Builder.getIntN(Values.IVSize, 1); - } else { - assert((Schedule == OMP_sch_static_chunked || - Schedule == OMP_sch_static_balanced_chunked || - Schedule == OMP_ord_static_chunked || - Schedule == OMP_dist_sch_static_chunked) && - "expected static chunked schedule"); - } - llvm::Value *Args[] = { - UpdateLocation, - ThreadId, - CGF.Builder.getInt32(addMonoNonMonoModifier(Schedule, M1, - M2)), // Schedule type - Values.IL.getPointer(), // &isLastIter - Values.LB.getPointer(), // &LB - Values.UB.getPointer(), // &UB - Values.ST.getPointer(), // &Stride - CGF.Builder.getIntN(Values.IVSize, 1), // Incr - Chunk // Chunk - }; - CGF.EmitRuntimeCall(ForStaticInitFunction, Args); -} - -void CGOpenMPRuntime::emitForStaticInit(CodeGenFunction &CGF, - SourceLocation Loc, - OpenMPDirectiveKind DKind, - const OpenMPScheduleTy &ScheduleKind, - const StaticRTInput &Values) { - OpenMPSchedType ScheduleNum = getRuntimeSchedule( - ScheduleKind.Schedule, Values.Chunk != nullptr, Values.Ordered); - assert(isOpenMPWorksharingDirective(DKind) && - "Expected loop-based or sections-based directive."); - llvm::Value *UpdatedLocation = emitUpdateLocation(CGF, Loc, - isOpenMPLoopDirective(DKind) - ? OMP_IDENT_WORK_LOOP - : OMP_IDENT_WORK_SECTIONS); - llvm::Value *ThreadId = getThreadID(CGF, Loc); - llvm::Constant *StaticInitFunction = - createForStaticInitFunction(Values.IVSize, Values.IVSigned); - emitForStaticInitCall(CGF, UpdatedLocation, ThreadId, StaticInitFunction, - ScheduleNum, ScheduleKind.M1, ScheduleKind.M2, Values); -} - -void CGOpenMPRuntime::emitDistributeStaticInit( - CodeGenFunction &CGF, SourceLocation Loc, - OpenMPDistScheduleClauseKind SchedKind, - const CGOpenMPRuntime::StaticRTInput &Values) { - OpenMPSchedType ScheduleNum = - getRuntimeSchedule(SchedKind, Values.Chunk != nullptr); - llvm::Value *UpdatedLocation = - emitUpdateLocation(CGF, Loc, OMP_IDENT_WORK_DISTRIBUTE); - llvm::Value *ThreadId = getThreadID(CGF, Loc); - llvm::Constant *StaticInitFunction = - createForStaticInitFunction(Values.IVSize, Values.IVSigned); - emitForStaticInitCall(CGF, UpdatedLocation, ThreadId, StaticInitFunction, - ScheduleNum, OMPC_SCHEDULE_MODIFIER_unknown, - OMPC_SCHEDULE_MODIFIER_unknown, Values); -} - -void CGOpenMPRuntime::emitForStaticFinish(CodeGenFunction &CGF, - SourceLocation Loc, - OpenMPDirectiveKind DKind) { - if (!CGF.HaveInsertPoint()) - return; - // Call __kmpc_for_static_fini(ident_t *loc, kmp_int32 tid); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc, - isOpenMPDistributeDirective(DKind) - ? OMP_IDENT_WORK_DISTRIBUTE - : isOpenMPLoopDirective(DKind) - ? OMP_IDENT_WORK_LOOP - : OMP_IDENT_WORK_SECTIONS), - getThreadID(CGF, Loc)}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_for_static_fini), - Args); -} - -void CGOpenMPRuntime::emitForOrderedIterationEnd(CodeGenFunction &CGF, - SourceLocation Loc, - unsigned IVSize, - bool IVSigned) { - if (!CGF.HaveInsertPoint()) - return; - // Call __kmpc_for_dynamic_fini_(4|8)[u](ident_t *loc, kmp_int32 tid); - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; - CGF.EmitRuntimeCall(createDispatchFiniFunction(IVSize, IVSigned), Args); -} - -llvm::Value *CGOpenMPRuntime::emitForNext(CodeGenFunction &CGF, - SourceLocation Loc, unsigned IVSize, - bool IVSigned, Address IL, - Address LB, Address UB, - Address ST) { - // Call __kmpc_dispatch_next( - // ident_t *loc, kmp_int32 tid, kmp_int32 *p_lastiter, - // kmp_int[32|64] *p_lower, kmp_int[32|64] *p_upper, - // kmp_int[32|64] *p_stride); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), - getThreadID(CGF, Loc), - IL.getPointer(), // &isLastIter - LB.getPointer(), // &Lower - UB.getPointer(), // &Upper - ST.getPointer() // &Stride - }; - llvm::Value *Call = - CGF.EmitRuntimeCall(createDispatchNextFunction(IVSize, IVSigned), Args); - return CGF.EmitScalarConversion( - Call, CGF.getContext().getIntTypeForBitwidth(32, /*Signed=*/1), - CGF.getContext().BoolTy, Loc); -} - -void CGOpenMPRuntime::emitNumThreadsClause(CodeGenFunction &CGF, - llvm::Value *NumThreads, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // Build call __kmpc_push_num_threads(&loc, global_tid, num_threads) - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - CGF.Builder.CreateIntCast(NumThreads, CGF.Int32Ty, /*isSigned*/ true)}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_num_threads), - Args); -} - -void CGOpenMPRuntime::emitProcBindClause(CodeGenFunction &CGF, - OpenMPProcBindClauseKind ProcBind, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // Constants for proc bind value accepted by the runtime. - enum ProcBindTy { - ProcBindFalse = 0, - ProcBindTrue, - ProcBindMaster, - ProcBindClose, - ProcBindSpread, - ProcBindIntel, - ProcBindDefault - } RuntimeProcBind; - switch (ProcBind) { - case OMPC_PROC_BIND_master: - RuntimeProcBind = ProcBindMaster; - break; - case OMPC_PROC_BIND_close: - RuntimeProcBind = ProcBindClose; - break; - case OMPC_PROC_BIND_spread: - RuntimeProcBind = ProcBindSpread; - break; - case OMPC_PROC_BIND_unknown: - llvm_unreachable("Unsupported proc_bind value."); - } - // Build call __kmpc_push_proc_bind(&loc, global_tid, proc_bind) - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - llvm::ConstantInt::get(CGM.IntTy, RuntimeProcBind, /*isSigned=*/true)}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_proc_bind), Args); -} - -void CGOpenMPRuntime::emitFlush(CodeGenFunction &CGF, ArrayRef<const Expr *>, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // Build call void __kmpc_flush(ident_t *loc) - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_flush), - emitUpdateLocation(CGF, Loc)); -} - -namespace { -/// Indexes of fields for type kmp_task_t. -enum KmpTaskTFields { - /// List of shared variables. - KmpTaskTShareds, - /// Task routine. - KmpTaskTRoutine, - /// Partition id for the untied tasks. - KmpTaskTPartId, - /// Function with call of destructors for private variables. - Data1, - /// Task priority. - Data2, - /// (Taskloops only) Lower bound. - KmpTaskTLowerBound, - /// (Taskloops only) Upper bound. - KmpTaskTUpperBound, - /// (Taskloops only) Stride. - KmpTaskTStride, - /// (Taskloops only) Is last iteration flag. - KmpTaskTLastIter, - /// (Taskloops only) Reduction data. - KmpTaskTReductions, -}; -} // anonymous namespace - -bool CGOpenMPRuntime::OffloadEntriesInfoManagerTy::empty() const { - return OffloadEntriesTargetRegion.empty() && - OffloadEntriesDeviceGlobalVar.empty(); -} - -/// Initialize target region entry. -void CGOpenMPRuntime::OffloadEntriesInfoManagerTy:: - initializeTargetRegionEntryInfo(unsigned DeviceID, unsigned FileID, - StringRef ParentName, unsigned LineNum, - unsigned Order) { - assert(CGM.getLangOpts().OpenMPIsDevice && "Initialization of entries is " - "only required for the device " - "code generation."); - OffloadEntriesTargetRegion[DeviceID][FileID][ParentName][LineNum] = - OffloadEntryInfoTargetRegion(Order, /*Addr=*/nullptr, /*ID=*/nullptr, - OMPTargetRegionEntryTargetRegion); - ++OffloadingEntriesNum; -} - -void CGOpenMPRuntime::OffloadEntriesInfoManagerTy:: - registerTargetRegionEntryInfo(unsigned DeviceID, unsigned FileID, - StringRef ParentName, unsigned LineNum, - llvm::Constant *Addr, llvm::Constant *ID, - OMPTargetRegionEntryKind Flags) { - // If we are emitting code for a target, the entry is already initialized, - // only has to be registered. - if (CGM.getLangOpts().OpenMPIsDevice) { - if (!hasTargetRegionEntryInfo(DeviceID, FileID, ParentName, LineNum)) { - unsigned DiagID = CGM.getDiags().getCustomDiagID( - DiagnosticsEngine::Error, - "Unable to find target region on line '%0' in the device code."); - CGM.getDiags().Report(DiagID) << LineNum; - return; - } - auto &Entry = - OffloadEntriesTargetRegion[DeviceID][FileID][ParentName][LineNum]; - assert(Entry.isValid() && "Entry not initialized!"); - Entry.setAddress(Addr); - Entry.setID(ID); - Entry.setFlags(Flags); - } else { - OffloadEntryInfoTargetRegion Entry(OffloadingEntriesNum, Addr, ID, Flags); - OffloadEntriesTargetRegion[DeviceID][FileID][ParentName][LineNum] = Entry; - ++OffloadingEntriesNum; - } -} - -bool CGOpenMPRuntime::OffloadEntriesInfoManagerTy::hasTargetRegionEntryInfo( - unsigned DeviceID, unsigned FileID, StringRef ParentName, - unsigned LineNum) const { - auto PerDevice = OffloadEntriesTargetRegion.find(DeviceID); - if (PerDevice == OffloadEntriesTargetRegion.end()) - return false; - auto PerFile = PerDevice->second.find(FileID); - if (PerFile == PerDevice->second.end()) - return false; - auto PerParentName = PerFile->second.find(ParentName); - if (PerParentName == PerFile->second.end()) - return false; - auto PerLine = PerParentName->second.find(LineNum); - if (PerLine == PerParentName->second.end()) - return false; - // Fail if this entry is already registered. - if (PerLine->second.getAddress() || PerLine->second.getID()) - return false; - return true; -} - -void CGOpenMPRuntime::OffloadEntriesInfoManagerTy::actOnTargetRegionEntriesInfo( - const OffloadTargetRegionEntryInfoActTy &Action) { - // Scan all target region entries and perform the provided action. - for (const auto &D : OffloadEntriesTargetRegion) - for (const auto &F : D.second) - for (const auto &P : F.second) - for (const auto &L : P.second) - Action(D.first, F.first, P.first(), L.first, L.second); -} - -void CGOpenMPRuntime::OffloadEntriesInfoManagerTy:: - initializeDeviceGlobalVarEntryInfo(StringRef Name, - OMPTargetGlobalVarEntryKind Flags, - unsigned Order) { - assert(CGM.getLangOpts().OpenMPIsDevice && "Initialization of entries is " - "only required for the device " - "code generation."); - OffloadEntriesDeviceGlobalVar.try_emplace(Name, Order, Flags); - ++OffloadingEntriesNum; -} - -void CGOpenMPRuntime::OffloadEntriesInfoManagerTy:: - registerDeviceGlobalVarEntryInfo(StringRef VarName, llvm::Constant *Addr, - CharUnits VarSize, - OMPTargetGlobalVarEntryKind Flags, - llvm::GlobalValue::LinkageTypes Linkage) { - if (CGM.getLangOpts().OpenMPIsDevice) { - auto &Entry = OffloadEntriesDeviceGlobalVar[VarName]; - assert(Entry.isValid() && Entry.getFlags() == Flags && - "Entry not initialized!"); - assert((!Entry.getAddress() || Entry.getAddress() == Addr) && - "Resetting with the new address."); - if (Entry.getAddress() && hasDeviceGlobalVarEntryInfo(VarName)) - return; - Entry.setAddress(Addr); - Entry.setVarSize(VarSize); - Entry.setLinkage(Linkage); - } else { - if (hasDeviceGlobalVarEntryInfo(VarName)) - return; - OffloadEntriesDeviceGlobalVar.try_emplace( - VarName, OffloadingEntriesNum, Addr, VarSize, Flags, Linkage); - ++OffloadingEntriesNum; - } -} - -void CGOpenMPRuntime::OffloadEntriesInfoManagerTy:: - actOnDeviceGlobalVarEntriesInfo( - const OffloadDeviceGlobalVarEntryInfoActTy &Action) { - // Scan all target region entries and perform the provided action. - for (const auto &E : OffloadEntriesDeviceGlobalVar) - Action(E.getKey(), E.getValue()); -} - -llvm::Function * -CGOpenMPRuntime::createOffloadingBinaryDescriptorRegistration() { - // If we don't have entries or if we are emitting code for the device, we - // don't need to do anything. - if (CGM.getLangOpts().OpenMPIsDevice || OffloadEntriesInfoManager.empty()) - return nullptr; - - llvm::Module &M = CGM.getModule(); - ASTContext &C = CGM.getContext(); - - // Get list of devices we care about - const std::vector<llvm::Triple> &Devices = CGM.getLangOpts().OMPTargetTriples; - - // We should be creating an offloading descriptor only if there are devices - // specified. - assert(!Devices.empty() && "No OpenMP offloading devices??"); - - // Create the external variables that will point to the begin and end of the - // host entries section. These will be defined by the linker. - llvm::Type *OffloadEntryTy = - CGM.getTypes().ConvertTypeForMem(getTgtOffloadEntryQTy()); - std::string EntriesBeginName = getName({"omp_offloading", "entries_begin"}); - auto *HostEntriesBegin = new llvm::GlobalVariable( - M, OffloadEntryTy, /*isConstant=*/true, - llvm::GlobalValue::ExternalLinkage, /*Initializer=*/nullptr, - EntriesBeginName); - std::string EntriesEndName = getName({"omp_offloading", "entries_end"}); - auto *HostEntriesEnd = - new llvm::GlobalVariable(M, OffloadEntryTy, /*isConstant=*/true, - llvm::GlobalValue::ExternalLinkage, - /*Initializer=*/nullptr, EntriesEndName); - - // Create all device images - auto *DeviceImageTy = cast<llvm::StructType>( - CGM.getTypes().ConvertTypeForMem(getTgtDeviceImageQTy())); - ConstantInitBuilder DeviceImagesBuilder(CGM); - ConstantArrayBuilder DeviceImagesEntries = - DeviceImagesBuilder.beginArray(DeviceImageTy); - - for (const llvm::Triple &Device : Devices) { - StringRef T = Device.getTriple(); - std::string BeginName = getName({"omp_offloading", "img_start", ""}); - auto *ImgBegin = new llvm::GlobalVariable( - M, CGM.Int8Ty, /*isConstant=*/true, - llvm::GlobalValue::ExternalWeakLinkage, - /*Initializer=*/nullptr, Twine(BeginName).concat(T)); - std::string EndName = getName({"omp_offloading", "img_end", ""}); - auto *ImgEnd = new llvm::GlobalVariable( - M, CGM.Int8Ty, /*isConstant=*/true, - llvm::GlobalValue::ExternalWeakLinkage, - /*Initializer=*/nullptr, Twine(EndName).concat(T)); - - llvm::Constant *Data[] = {ImgBegin, ImgEnd, HostEntriesBegin, - HostEntriesEnd}; - createConstantGlobalStructAndAddToParent(CGM, getTgtDeviceImageQTy(), Data, - DeviceImagesEntries); - } - - // Create device images global array. - std::string ImagesName = getName({"omp_offloading", "device_images"}); - llvm::GlobalVariable *DeviceImages = - DeviceImagesEntries.finishAndCreateGlobal(ImagesName, - CGM.getPointerAlign(), - /*isConstant=*/true); - DeviceImages->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global); - - // This is a Zero array to be used in the creation of the constant expressions - llvm::Constant *Index[] = {llvm::Constant::getNullValue(CGM.Int32Ty), - llvm::Constant::getNullValue(CGM.Int32Ty)}; - - // Create the target region descriptor. - llvm::Constant *Data[] = { - llvm::ConstantInt::get(CGM.Int32Ty, Devices.size()), - llvm::ConstantExpr::getGetElementPtr(DeviceImages->getValueType(), - DeviceImages, Index), - HostEntriesBegin, HostEntriesEnd}; - std::string Descriptor = getName({"omp_offloading", "descriptor"}); - llvm::GlobalVariable *Desc = createGlobalStruct( - CGM, getTgtBinaryDescriptorQTy(), /*IsConstant=*/true, Data, Descriptor); - - // Emit code to register or unregister the descriptor at execution - // startup or closing, respectively. - - llvm::Function *UnRegFn; - { - FunctionArgList Args; - ImplicitParamDecl DummyPtr(C, C.VoidPtrTy, ImplicitParamDecl::Other); - Args.push_back(&DummyPtr); - - CodeGenFunction CGF(CGM); - // Disable debug info for global (de-)initializer because they are not part - // of some particular construct. - CGF.disableDebugInfo(); - const auto &FI = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI); - std::string UnregName = getName({"omp_offloading", "descriptor_unreg"}); - UnRegFn = CGM.CreateGlobalInitOrDestructFunction(FTy, UnregName, FI); - CGF.StartFunction(GlobalDecl(), C.VoidTy, UnRegFn, FI, Args); - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__tgt_unregister_lib), - Desc); - CGF.FinishFunction(); - } - llvm::Function *RegFn; - { - CodeGenFunction CGF(CGM); - // Disable debug info for global (de-)initializer because they are not part - // of some particular construct. - CGF.disableDebugInfo(); - const auto &FI = CGM.getTypes().arrangeNullaryFunction(); - llvm::FunctionType *FTy = CGM.getTypes().GetFunctionType(FI); - - // Encode offload target triples into the registration function name. It - // will serve as a comdat key for the registration/unregistration code for - // this particular combination of offloading targets. - SmallVector<StringRef, 4U> RegFnNameParts(Devices.size() + 2U); - RegFnNameParts[0] = "omp_offloading"; - RegFnNameParts[1] = "descriptor_reg"; - llvm::transform(Devices, std::next(RegFnNameParts.begin(), 2), - [](const llvm::Triple &T) -> const std::string& { - return T.getTriple(); - }); - llvm::sort(std::next(RegFnNameParts.begin(), 2), RegFnNameParts.end()); - std::string Descriptor = getName(RegFnNameParts); - RegFn = CGM.CreateGlobalInitOrDestructFunction(FTy, Descriptor, FI); - CGF.StartFunction(GlobalDecl(), C.VoidTy, RegFn, FI, FunctionArgList()); - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__tgt_register_lib), Desc); - // Create a variable to drive the registration and unregistration of the - // descriptor, so we can reuse the logic that emits Ctors and Dtors. - ImplicitParamDecl RegUnregVar(C, C.getTranslationUnitDecl(), - SourceLocation(), nullptr, C.CharTy, - ImplicitParamDecl::Other); - CGM.getCXXABI().registerGlobalDtor(CGF, RegUnregVar, UnRegFn, Desc); - CGF.FinishFunction(); - } - if (CGM.supportsCOMDAT()) { - // It is sufficient to call registration function only once, so create a - // COMDAT group for registration/unregistration functions and associated - // data. That would reduce startup time and code size. Registration - // function serves as a COMDAT group key. - llvm::Comdat *ComdatKey = M.getOrInsertComdat(RegFn->getName()); - RegFn->setLinkage(llvm::GlobalValue::LinkOnceAnyLinkage); - RegFn->setVisibility(llvm::GlobalValue::HiddenVisibility); - RegFn->setComdat(ComdatKey); - UnRegFn->setComdat(ComdatKey); - DeviceImages->setComdat(ComdatKey); - Desc->setComdat(ComdatKey); - } - return RegFn; -} - -void CGOpenMPRuntime::createOffloadEntry( - llvm::Constant *ID, llvm::Constant *Addr, uint64_t Size, int32_t Flags, - llvm::GlobalValue::LinkageTypes Linkage) { - StringRef Name = Addr->getName(); - llvm::Module &M = CGM.getModule(); - llvm::LLVMContext &C = M.getContext(); - - // Create constant string with the name. - llvm::Constant *StrPtrInit = llvm::ConstantDataArray::getString(C, Name); - - std::string StringName = getName({"omp_offloading", "entry_name"}); - auto *Str = new llvm::GlobalVariable( - M, StrPtrInit->getType(), /*isConstant=*/true, - llvm::GlobalValue::InternalLinkage, StrPtrInit, StringName); - Str->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global); - - llvm::Constant *Data[] = {llvm::ConstantExpr::getBitCast(ID, CGM.VoidPtrTy), - llvm::ConstantExpr::getBitCast(Str, CGM.Int8PtrTy), - llvm::ConstantInt::get(CGM.SizeTy, Size), - llvm::ConstantInt::get(CGM.Int32Ty, Flags), - llvm::ConstantInt::get(CGM.Int32Ty, 0)}; - std::string EntryName = getName({"omp_offloading", "entry", ""}); - llvm::GlobalVariable *Entry = createGlobalStruct( - CGM, getTgtOffloadEntryQTy(), /*IsConstant=*/true, Data, - Twine(EntryName).concat(Name), llvm::GlobalValue::WeakAnyLinkage); - - // The entry has to be created in the section the linker expects it to be. - std::string Section = getName({"omp_offloading", "entries"}); - Entry->setSection(Section); -} - -void CGOpenMPRuntime::createOffloadEntriesAndInfoMetadata() { - // Emit the offloading entries and metadata so that the device codegen side - // can easily figure out what to emit. The produced metadata looks like - // this: - // - // !omp_offload.info = !{!1, ...} - // - // Right now we only generate metadata for function that contain target - // regions. - - // If we do not have entries, we don't need to do anything. - if (OffloadEntriesInfoManager.empty()) - return; - - llvm::Module &M = CGM.getModule(); - llvm::LLVMContext &C = M.getContext(); - SmallVector<const OffloadEntriesInfoManagerTy::OffloadEntryInfo *, 16> - OrderedEntries(OffloadEntriesInfoManager.size()); - llvm::SmallVector<StringRef, 16> ParentFunctions( - OffloadEntriesInfoManager.size()); - - // Auxiliary methods to create metadata values and strings. - auto &&GetMDInt = [this](unsigned V) { - return llvm::ConstantAsMetadata::get( - llvm::ConstantInt::get(CGM.Int32Ty, V)); - }; - - auto &&GetMDString = [&C](StringRef V) { return llvm::MDString::get(C, V); }; - - // Create the offloading info metadata node. - llvm::NamedMDNode *MD = M.getOrInsertNamedMetadata("omp_offload.info"); - - // Create function that emits metadata for each target region entry; - auto &&TargetRegionMetadataEmitter = - [&C, MD, &OrderedEntries, &ParentFunctions, &GetMDInt, &GetMDString]( - unsigned DeviceID, unsigned FileID, StringRef ParentName, - unsigned Line, - const OffloadEntriesInfoManagerTy::OffloadEntryInfoTargetRegion &E) { - // Generate metadata for target regions. Each entry of this metadata - // contains: - // - Entry 0 -> Kind of this type of metadata (0). - // - Entry 1 -> Device ID of the file where the entry was identified. - // - Entry 2 -> File ID of the file where the entry was identified. - // - Entry 3 -> Mangled name of the function where the entry was - // identified. - // - Entry 4 -> Line in the file where the entry was identified. - // - Entry 5 -> Order the entry was created. - // The first element of the metadata node is the kind. - llvm::Metadata *Ops[] = {GetMDInt(E.getKind()), GetMDInt(DeviceID), - GetMDInt(FileID), GetMDString(ParentName), - GetMDInt(Line), GetMDInt(E.getOrder())}; - - // Save this entry in the right position of the ordered entries array. - OrderedEntries[E.getOrder()] = &E; - ParentFunctions[E.getOrder()] = ParentName; - - // Add metadata to the named metadata node. - MD->addOperand(llvm::MDNode::get(C, Ops)); - }; - - OffloadEntriesInfoManager.actOnTargetRegionEntriesInfo( - TargetRegionMetadataEmitter); - - // Create function that emits metadata for each device global variable entry; - auto &&DeviceGlobalVarMetadataEmitter = - [&C, &OrderedEntries, &GetMDInt, &GetMDString, - MD](StringRef MangledName, - const OffloadEntriesInfoManagerTy::OffloadEntryInfoDeviceGlobalVar - &E) { - // Generate metadata for global variables. Each entry of this metadata - // contains: - // - Entry 0 -> Kind of this type of metadata (1). - // - Entry 1 -> Mangled name of the variable. - // - Entry 2 -> Declare target kind. - // - Entry 3 -> Order the entry was created. - // The first element of the metadata node is the kind. - llvm::Metadata *Ops[] = { - GetMDInt(E.getKind()), GetMDString(MangledName), - GetMDInt(E.getFlags()), GetMDInt(E.getOrder())}; - - // Save this entry in the right position of the ordered entries array. - OrderedEntries[E.getOrder()] = &E; - - // Add metadata to the named metadata node. - MD->addOperand(llvm::MDNode::get(C, Ops)); - }; - - OffloadEntriesInfoManager.actOnDeviceGlobalVarEntriesInfo( - DeviceGlobalVarMetadataEmitter); - - for (const auto *E : OrderedEntries) { - assert(E && "All ordered entries must exist!"); - if (const auto *CE = - dyn_cast<OffloadEntriesInfoManagerTy::OffloadEntryInfoTargetRegion>( - E)) { - if (!CE->getID() || !CE->getAddress()) { - // Do not blame the entry if the parent funtion is not emitted. - StringRef FnName = ParentFunctions[CE->getOrder()]; - if (!CGM.GetGlobalValue(FnName)) - continue; - unsigned DiagID = CGM.getDiags().getCustomDiagID( - DiagnosticsEngine::Error, - "Offloading entry for target region is incorrect: either the " - "address or the ID is invalid."); - CGM.getDiags().Report(DiagID); - continue; - } - createOffloadEntry(CE->getID(), CE->getAddress(), /*Size=*/0, - CE->getFlags(), llvm::GlobalValue::WeakAnyLinkage); - } else if (const auto *CE = - dyn_cast<OffloadEntriesInfoManagerTy:: - OffloadEntryInfoDeviceGlobalVar>(E)) { - OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryKind Flags = - static_cast<OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryKind>( - CE->getFlags()); - switch (Flags) { - case OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryTo: { - if (!CE->getAddress()) { - unsigned DiagID = CGM.getDiags().getCustomDiagID( - DiagnosticsEngine::Error, - "Offloading entry for declare target variable is incorrect: the " - "address is invalid."); - CGM.getDiags().Report(DiagID); - continue; - } - // The vaiable has no definition - no need to add the entry. - if (CE->getVarSize().isZero()) - continue; - break; - } - case OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryLink: - assert(((CGM.getLangOpts().OpenMPIsDevice && !CE->getAddress()) || - (!CGM.getLangOpts().OpenMPIsDevice && CE->getAddress())) && - "Declaret target link address is set."); - if (CGM.getLangOpts().OpenMPIsDevice) - continue; - if (!CE->getAddress()) { - unsigned DiagID = CGM.getDiags().getCustomDiagID( - DiagnosticsEngine::Error, - "Offloading entry for declare target variable is incorrect: the " - "address is invalid."); - CGM.getDiags().Report(DiagID); - continue; - } - break; - } - createOffloadEntry(CE->getAddress(), CE->getAddress(), - CE->getVarSize().getQuantity(), Flags, - CE->getLinkage()); - } else { - llvm_unreachable("Unsupported entry kind."); - } - } -} - -/// Loads all the offload entries information from the host IR -/// metadata. -void CGOpenMPRuntime::loadOffloadInfoMetadata() { - // If we are in target mode, load the metadata from the host IR. This code has - // to match the metadaata creation in createOffloadEntriesAndInfoMetadata(). - - if (!CGM.getLangOpts().OpenMPIsDevice) - return; - - if (CGM.getLangOpts().OMPHostIRFile.empty()) - return; - - auto Buf = llvm::MemoryBuffer::getFile(CGM.getLangOpts().OMPHostIRFile); - if (auto EC = Buf.getError()) { - CGM.getDiags().Report(diag::err_cannot_open_file) - << CGM.getLangOpts().OMPHostIRFile << EC.message(); - return; - } - - llvm::LLVMContext C; - auto ME = expectedToErrorOrAndEmitErrors( - C, llvm::parseBitcodeFile(Buf.get()->getMemBufferRef(), C)); - - if (auto EC = ME.getError()) { - unsigned DiagID = CGM.getDiags().getCustomDiagID( - DiagnosticsEngine::Error, "Unable to parse host IR file '%0':'%1'"); - CGM.getDiags().Report(DiagID) - << CGM.getLangOpts().OMPHostIRFile << EC.message(); - return; - } - - llvm::NamedMDNode *MD = ME.get()->getNamedMetadata("omp_offload.info"); - if (!MD) - return; - - for (llvm::MDNode *MN : MD->operands()) { - auto &&GetMDInt = [MN](unsigned Idx) { - auto *V = cast<llvm::ConstantAsMetadata>(MN->getOperand(Idx)); - return cast<llvm::ConstantInt>(V->getValue())->getZExtValue(); - }; - - auto &&GetMDString = [MN](unsigned Idx) { - auto *V = cast<llvm::MDString>(MN->getOperand(Idx)); - return V->getString(); - }; - - switch (GetMDInt(0)) { - default: - llvm_unreachable("Unexpected metadata!"); - break; - case OffloadEntriesInfoManagerTy::OffloadEntryInfo:: - OffloadingEntryInfoTargetRegion: - OffloadEntriesInfoManager.initializeTargetRegionEntryInfo( - /*DeviceID=*/GetMDInt(1), /*FileID=*/GetMDInt(2), - /*ParentName=*/GetMDString(3), /*Line=*/GetMDInt(4), - /*Order=*/GetMDInt(5)); - break; - case OffloadEntriesInfoManagerTy::OffloadEntryInfo:: - OffloadingEntryInfoDeviceGlobalVar: - OffloadEntriesInfoManager.initializeDeviceGlobalVarEntryInfo( - /*MangledName=*/GetMDString(1), - static_cast<OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryKind>( - /*Flags=*/GetMDInt(2)), - /*Order=*/GetMDInt(3)); - break; - } - } -} - -void CGOpenMPRuntime::emitKmpRoutineEntryT(QualType KmpInt32Ty) { - if (!KmpRoutineEntryPtrTy) { - // Build typedef kmp_int32 (* kmp_routine_entry_t)(kmp_int32, void *); type. - ASTContext &C = CGM.getContext(); - QualType KmpRoutineEntryTyArgs[] = {KmpInt32Ty, C.VoidPtrTy}; - FunctionProtoType::ExtProtoInfo EPI; - KmpRoutineEntryPtrQTy = C.getPointerType( - C.getFunctionType(KmpInt32Ty, KmpRoutineEntryTyArgs, EPI)); - KmpRoutineEntryPtrTy = CGM.getTypes().ConvertType(KmpRoutineEntryPtrQTy); - } -} - -QualType CGOpenMPRuntime::getTgtOffloadEntryQTy() { - // Make sure the type of the entry is already created. This is the type we - // have to create: - // struct __tgt_offload_entry{ - // void *addr; // Pointer to the offload entry info. - // // (function or global) - // char *name; // Name of the function or global. - // size_t size; // Size of the entry info (0 if it a function). - // int32_t flags; // Flags associated with the entry, e.g. 'link'. - // int32_t reserved; // Reserved, to use by the runtime library. - // }; - if (TgtOffloadEntryQTy.isNull()) { - ASTContext &C = CGM.getContext(); - RecordDecl *RD = C.buildImplicitRecord("__tgt_offload_entry"); - RD->startDefinition(); - addFieldToRecordDecl(C, RD, C.VoidPtrTy); - addFieldToRecordDecl(C, RD, C.getPointerType(C.CharTy)); - addFieldToRecordDecl(C, RD, C.getSizeType()); - addFieldToRecordDecl( - C, RD, C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/true)); - addFieldToRecordDecl( - C, RD, C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/true)); - RD->completeDefinition(); - RD->addAttr(PackedAttr::CreateImplicit(C)); - TgtOffloadEntryQTy = C.getRecordType(RD); - } - return TgtOffloadEntryQTy; -} - -QualType CGOpenMPRuntime::getTgtDeviceImageQTy() { - // These are the types we need to build: - // struct __tgt_device_image{ - // void *ImageStart; // Pointer to the target code start. - // void *ImageEnd; // Pointer to the target code end. - // // We also add the host entries to the device image, as it may be useful - // // for the target runtime to have access to that information. - // __tgt_offload_entry *EntriesBegin; // Begin of the table with all - // // the entries. - // __tgt_offload_entry *EntriesEnd; // End of the table with all the - // // entries (non inclusive). - // }; - if (TgtDeviceImageQTy.isNull()) { - ASTContext &C = CGM.getContext(); - RecordDecl *RD = C.buildImplicitRecord("__tgt_device_image"); - RD->startDefinition(); - addFieldToRecordDecl(C, RD, C.VoidPtrTy); - addFieldToRecordDecl(C, RD, C.VoidPtrTy); - addFieldToRecordDecl(C, RD, C.getPointerType(getTgtOffloadEntryQTy())); - addFieldToRecordDecl(C, RD, C.getPointerType(getTgtOffloadEntryQTy())); - RD->completeDefinition(); - TgtDeviceImageQTy = C.getRecordType(RD); - } - return TgtDeviceImageQTy; -} - -QualType CGOpenMPRuntime::getTgtBinaryDescriptorQTy() { - // struct __tgt_bin_desc{ - // int32_t NumDevices; // Number of devices supported. - // __tgt_device_image *DeviceImages; // Arrays of device images - // // (one per device). - // __tgt_offload_entry *EntriesBegin; // Begin of the table with all the - // // entries. - // __tgt_offload_entry *EntriesEnd; // End of the table with all the - // // entries (non inclusive). - // }; - if (TgtBinaryDescriptorQTy.isNull()) { - ASTContext &C = CGM.getContext(); - RecordDecl *RD = C.buildImplicitRecord("__tgt_bin_desc"); - RD->startDefinition(); - addFieldToRecordDecl( - C, RD, C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/true)); - addFieldToRecordDecl(C, RD, C.getPointerType(getTgtDeviceImageQTy())); - addFieldToRecordDecl(C, RD, C.getPointerType(getTgtOffloadEntryQTy())); - addFieldToRecordDecl(C, RD, C.getPointerType(getTgtOffloadEntryQTy())); - RD->completeDefinition(); - TgtBinaryDescriptorQTy = C.getRecordType(RD); - } - return TgtBinaryDescriptorQTy; -} - -namespace { -struct PrivateHelpersTy { - PrivateHelpersTy(const VarDecl *Original, const VarDecl *PrivateCopy, - const VarDecl *PrivateElemInit) - : Original(Original), PrivateCopy(PrivateCopy), - PrivateElemInit(PrivateElemInit) {} - const VarDecl *Original; - const VarDecl *PrivateCopy; - const VarDecl *PrivateElemInit; -}; -typedef std::pair<CharUnits /*Align*/, PrivateHelpersTy> PrivateDataTy; -} // anonymous namespace - -static RecordDecl * -createPrivatesRecordDecl(CodeGenModule &CGM, ArrayRef<PrivateDataTy> Privates) { - if (!Privates.empty()) { - ASTContext &C = CGM.getContext(); - // Build struct .kmp_privates_t. { - // /* private vars */ - // }; - RecordDecl *RD = C.buildImplicitRecord(".kmp_privates.t"); - RD->startDefinition(); - for (const auto &Pair : Privates) { - const VarDecl *VD = Pair.second.Original; - QualType Type = VD->getType().getNonReferenceType(); - FieldDecl *FD = addFieldToRecordDecl(C, RD, Type); - if (VD->hasAttrs()) { - for (specific_attr_iterator<AlignedAttr> I(VD->getAttrs().begin()), - E(VD->getAttrs().end()); - I != E; ++I) - FD->addAttr(*I); - } - } - RD->completeDefinition(); - return RD; - } - return nullptr; -} - -static RecordDecl * -createKmpTaskTRecordDecl(CodeGenModule &CGM, OpenMPDirectiveKind Kind, - QualType KmpInt32Ty, - QualType KmpRoutineEntryPointerQTy) { - ASTContext &C = CGM.getContext(); - // Build struct kmp_task_t { - // void * shareds; - // kmp_routine_entry_t routine; - // kmp_int32 part_id; - // kmp_cmplrdata_t data1; - // kmp_cmplrdata_t data2; - // For taskloops additional fields: - // kmp_uint64 lb; - // kmp_uint64 ub; - // kmp_int64 st; - // kmp_int32 liter; - // void * reductions; - // }; - RecordDecl *UD = C.buildImplicitRecord("kmp_cmplrdata_t", TTK_Union); - UD->startDefinition(); - addFieldToRecordDecl(C, UD, KmpInt32Ty); - addFieldToRecordDecl(C, UD, KmpRoutineEntryPointerQTy); - UD->completeDefinition(); - QualType KmpCmplrdataTy = C.getRecordType(UD); - RecordDecl *RD = C.buildImplicitRecord("kmp_task_t"); - RD->startDefinition(); - addFieldToRecordDecl(C, RD, C.VoidPtrTy); - addFieldToRecordDecl(C, RD, KmpRoutineEntryPointerQTy); - addFieldToRecordDecl(C, RD, KmpInt32Ty); - addFieldToRecordDecl(C, RD, KmpCmplrdataTy); - addFieldToRecordDecl(C, RD, KmpCmplrdataTy); - if (isOpenMPTaskLoopDirective(Kind)) { - QualType KmpUInt64Ty = - CGM.getContext().getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/0); - QualType KmpInt64Ty = - CGM.getContext().getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/1); - addFieldToRecordDecl(C, RD, KmpUInt64Ty); - addFieldToRecordDecl(C, RD, KmpUInt64Ty); - addFieldToRecordDecl(C, RD, KmpInt64Ty); - addFieldToRecordDecl(C, RD, KmpInt32Ty); - addFieldToRecordDecl(C, RD, C.VoidPtrTy); - } - RD->completeDefinition(); - return RD; -} - -static RecordDecl * -createKmpTaskTWithPrivatesRecordDecl(CodeGenModule &CGM, QualType KmpTaskTQTy, - ArrayRef<PrivateDataTy> Privates) { - ASTContext &C = CGM.getContext(); - // Build struct kmp_task_t_with_privates { - // kmp_task_t task_data; - // .kmp_privates_t. privates; - // }; - RecordDecl *RD = C.buildImplicitRecord("kmp_task_t_with_privates"); - RD->startDefinition(); - addFieldToRecordDecl(C, RD, KmpTaskTQTy); - if (const RecordDecl *PrivateRD = createPrivatesRecordDecl(CGM, Privates)) - addFieldToRecordDecl(C, RD, C.getRecordType(PrivateRD)); - RD->completeDefinition(); - return RD; -} - -/// Emit a proxy function which accepts kmp_task_t as the second -/// argument. -/// \code -/// kmp_int32 .omp_task_entry.(kmp_int32 gtid, kmp_task_t *tt) { -/// TaskFunction(gtid, tt->part_id, &tt->privates, task_privates_map, tt, -/// For taskloops: -/// tt->task_data.lb, tt->task_data.ub, tt->task_data.st, tt->task_data.liter, -/// tt->reductions, tt->shareds); -/// return 0; -/// } -/// \endcode -static llvm::Value * -emitProxyTaskFunction(CodeGenModule &CGM, SourceLocation Loc, - OpenMPDirectiveKind Kind, QualType KmpInt32Ty, - QualType KmpTaskTWithPrivatesPtrQTy, - QualType KmpTaskTWithPrivatesQTy, QualType KmpTaskTQTy, - QualType SharedsPtrTy, llvm::Value *TaskFunction, - llvm::Value *TaskPrivatesMap) { - ASTContext &C = CGM.getContext(); - FunctionArgList Args; - ImplicitParamDecl GtidArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, KmpInt32Ty, - ImplicitParamDecl::Other); - ImplicitParamDecl TaskTypeArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - KmpTaskTWithPrivatesPtrQTy.withRestrict(), - ImplicitParamDecl::Other); - Args.push_back(&GtidArg); - Args.push_back(&TaskTypeArg); - const auto &TaskEntryFnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(KmpInt32Ty, Args); - llvm::FunctionType *TaskEntryTy = - CGM.getTypes().GetFunctionType(TaskEntryFnInfo); - std::string Name = CGM.getOpenMPRuntime().getName({"omp_task_entry", ""}); - auto *TaskEntry = llvm::Function::Create( - TaskEntryTy, llvm::GlobalValue::InternalLinkage, Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), TaskEntry, TaskEntryFnInfo); - TaskEntry->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), KmpInt32Ty, TaskEntry, TaskEntryFnInfo, Args, - Loc, Loc); - - // TaskFunction(gtid, tt->task_data.part_id, &tt->privates, task_privates_map, - // tt, - // For taskloops: - // tt->task_data.lb, tt->task_data.ub, tt->task_data.st, tt->task_data.liter, - // tt->task_data.shareds); - llvm::Value *GtidParam = CGF.EmitLoadOfScalar( - CGF.GetAddrOfLocalVar(&GtidArg), /*Volatile=*/false, KmpInt32Ty, Loc); - LValue TDBase = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(&TaskTypeArg), - KmpTaskTWithPrivatesPtrQTy->castAs<PointerType>()); - const auto *KmpTaskTWithPrivatesQTyRD = - cast<RecordDecl>(KmpTaskTWithPrivatesQTy->getAsTagDecl()); - LValue Base = - CGF.EmitLValueForField(TDBase, *KmpTaskTWithPrivatesQTyRD->field_begin()); - const auto *KmpTaskTQTyRD = cast<RecordDecl>(KmpTaskTQTy->getAsTagDecl()); - auto PartIdFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTPartId); - LValue PartIdLVal = CGF.EmitLValueForField(Base, *PartIdFI); - llvm::Value *PartidParam = PartIdLVal.getPointer(); - - auto SharedsFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTShareds); - LValue SharedsLVal = CGF.EmitLValueForField(Base, *SharedsFI); - llvm::Value *SharedsParam = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.EmitLoadOfScalar(SharedsLVal, Loc), - CGF.ConvertTypeForMem(SharedsPtrTy)); - - auto PrivatesFI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin(), 1); - llvm::Value *PrivatesParam; - if (PrivatesFI != KmpTaskTWithPrivatesQTyRD->field_end()) { - LValue PrivatesLVal = CGF.EmitLValueForField(TDBase, *PrivatesFI); - PrivatesParam = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - PrivatesLVal.getPointer(), CGF.VoidPtrTy); - } else { - PrivatesParam = llvm::ConstantPointerNull::get(CGF.VoidPtrTy); - } - - llvm::Value *CommonArgs[] = {GtidParam, PartidParam, PrivatesParam, - TaskPrivatesMap, - CGF.Builder - .CreatePointerBitCastOrAddrSpaceCast( - TDBase.getAddress(), CGF.VoidPtrTy) - .getPointer()}; - SmallVector<llvm::Value *, 16> CallArgs(std::begin(CommonArgs), - std::end(CommonArgs)); - if (isOpenMPTaskLoopDirective(Kind)) { - auto LBFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTLowerBound); - LValue LBLVal = CGF.EmitLValueForField(Base, *LBFI); - llvm::Value *LBParam = CGF.EmitLoadOfScalar(LBLVal, Loc); - auto UBFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTUpperBound); - LValue UBLVal = CGF.EmitLValueForField(Base, *UBFI); - llvm::Value *UBParam = CGF.EmitLoadOfScalar(UBLVal, Loc); - auto StFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTStride); - LValue StLVal = CGF.EmitLValueForField(Base, *StFI); - llvm::Value *StParam = CGF.EmitLoadOfScalar(StLVal, Loc); - auto LIFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTLastIter); - LValue LILVal = CGF.EmitLValueForField(Base, *LIFI); - llvm::Value *LIParam = CGF.EmitLoadOfScalar(LILVal, Loc); - auto RFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTReductions); - LValue RLVal = CGF.EmitLValueForField(Base, *RFI); - llvm::Value *RParam = CGF.EmitLoadOfScalar(RLVal, Loc); - CallArgs.push_back(LBParam); - CallArgs.push_back(UBParam); - CallArgs.push_back(StParam); - CallArgs.push_back(LIParam); - CallArgs.push_back(RParam); - } - CallArgs.push_back(SharedsParam); - - CGM.getOpenMPRuntime().emitOutlinedFunctionCall(CGF, Loc, TaskFunction, - CallArgs); - CGF.EmitStoreThroughLValue(RValue::get(CGF.Builder.getInt32(/*C=*/0)), - CGF.MakeAddrLValue(CGF.ReturnValue, KmpInt32Ty)); - CGF.FinishFunction(); - return TaskEntry; -} - -static llvm::Value *emitDestructorsFunction(CodeGenModule &CGM, - SourceLocation Loc, - QualType KmpInt32Ty, - QualType KmpTaskTWithPrivatesPtrQTy, - QualType KmpTaskTWithPrivatesQTy) { - ASTContext &C = CGM.getContext(); - FunctionArgList Args; - ImplicitParamDecl GtidArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, KmpInt32Ty, - ImplicitParamDecl::Other); - ImplicitParamDecl TaskTypeArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - KmpTaskTWithPrivatesPtrQTy.withRestrict(), - ImplicitParamDecl::Other); - Args.push_back(&GtidArg); - Args.push_back(&TaskTypeArg); - const auto &DestructorFnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(KmpInt32Ty, Args); - llvm::FunctionType *DestructorFnTy = - CGM.getTypes().GetFunctionType(DestructorFnInfo); - std::string Name = - CGM.getOpenMPRuntime().getName({"omp_task_destructor", ""}); - auto *DestructorFn = - llvm::Function::Create(DestructorFnTy, llvm::GlobalValue::InternalLinkage, - Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), DestructorFn, - DestructorFnInfo); - DestructorFn->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), KmpInt32Ty, DestructorFn, DestructorFnInfo, - Args, Loc, Loc); - - LValue Base = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(&TaskTypeArg), - KmpTaskTWithPrivatesPtrQTy->castAs<PointerType>()); - const auto *KmpTaskTWithPrivatesQTyRD = - cast<RecordDecl>(KmpTaskTWithPrivatesQTy->getAsTagDecl()); - auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin()); - Base = CGF.EmitLValueForField(Base, *FI); - for (const auto *Field : - cast<RecordDecl>(FI->getType()->getAsTagDecl())->fields()) { - if (QualType::DestructionKind DtorKind = - Field->getType().isDestructedType()) { - LValue FieldLValue = CGF.EmitLValueForField(Base, Field); - CGF.pushDestroy(DtorKind, FieldLValue.getAddress(), Field->getType()); - } - } - CGF.FinishFunction(); - return DestructorFn; -} - -/// Emit a privates mapping function for correct handling of private and -/// firstprivate variables. -/// \code -/// void .omp_task_privates_map.(const .privates. *noalias privs, <ty1> -/// **noalias priv1,..., <tyn> **noalias privn) { -/// *priv1 = &.privates.priv1; -/// ...; -/// *privn = &.privates.privn; -/// } -/// \endcode -static llvm::Value * -emitTaskPrivateMappingFunction(CodeGenModule &CGM, SourceLocation Loc, - ArrayRef<const Expr *> PrivateVars, - ArrayRef<const Expr *> FirstprivateVars, - ArrayRef<const Expr *> LastprivateVars, - QualType PrivatesQTy, - ArrayRef<PrivateDataTy> Privates) { - ASTContext &C = CGM.getContext(); - FunctionArgList Args; - ImplicitParamDecl TaskPrivatesArg( - C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - C.getPointerType(PrivatesQTy).withConst().withRestrict(), - ImplicitParamDecl::Other); - Args.push_back(&TaskPrivatesArg); - llvm::DenseMap<const VarDecl *, unsigned> PrivateVarsPos; - unsigned Counter = 1; - for (const Expr *E : PrivateVars) { - Args.push_back(ImplicitParamDecl::Create( - C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - C.getPointerType(C.getPointerType(E->getType())) - .withConst() - .withRestrict(), - ImplicitParamDecl::Other)); - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); - PrivateVarsPos[VD] = Counter; - ++Counter; - } - for (const Expr *E : FirstprivateVars) { - Args.push_back(ImplicitParamDecl::Create( - C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - C.getPointerType(C.getPointerType(E->getType())) - .withConst() - .withRestrict(), - ImplicitParamDecl::Other)); - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); - PrivateVarsPos[VD] = Counter; - ++Counter; - } - for (const Expr *E : LastprivateVars) { - Args.push_back(ImplicitParamDecl::Create( - C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - C.getPointerType(C.getPointerType(E->getType())) - .withConst() - .withRestrict(), - ImplicitParamDecl::Other)); - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); - PrivateVarsPos[VD] = Counter; - ++Counter; - } - const auto &TaskPrivatesMapFnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *TaskPrivatesMapTy = - CGM.getTypes().GetFunctionType(TaskPrivatesMapFnInfo); - std::string Name = - CGM.getOpenMPRuntime().getName({"omp_task_privates_map", ""}); - auto *TaskPrivatesMap = llvm::Function::Create( - TaskPrivatesMapTy, llvm::GlobalValue::InternalLinkage, Name, - &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), TaskPrivatesMap, - TaskPrivatesMapFnInfo); - TaskPrivatesMap->removeFnAttr(llvm::Attribute::NoInline); - TaskPrivatesMap->removeFnAttr(llvm::Attribute::OptimizeNone); - TaskPrivatesMap->addFnAttr(llvm::Attribute::AlwaysInline); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, TaskPrivatesMap, - TaskPrivatesMapFnInfo, Args, Loc, Loc); - - // *privi = &.privates.privi; - LValue Base = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(&TaskPrivatesArg), - TaskPrivatesArg.getType()->castAs<PointerType>()); - const auto *PrivatesQTyRD = cast<RecordDecl>(PrivatesQTy->getAsTagDecl()); - Counter = 0; - for (const FieldDecl *Field : PrivatesQTyRD->fields()) { - LValue FieldLVal = CGF.EmitLValueForField(Base, Field); - const VarDecl *VD = Args[PrivateVarsPos[Privates[Counter].second.Original]]; - LValue RefLVal = - CGF.MakeAddrLValue(CGF.GetAddrOfLocalVar(VD), VD->getType()); - LValue RefLoadLVal = CGF.EmitLoadOfPointerLValue( - RefLVal.getAddress(), RefLVal.getType()->castAs<PointerType>()); - CGF.EmitStoreOfScalar(FieldLVal.getPointer(), RefLoadLVal); - ++Counter; - } - CGF.FinishFunction(); - return TaskPrivatesMap; -} - -static bool stable_sort_comparator(const PrivateDataTy P1, - const PrivateDataTy P2) { - return P1.first > P2.first; -} - -/// Emit initialization for private variables in task-based directives. -static void emitPrivatesInit(CodeGenFunction &CGF, - const OMPExecutableDirective &D, - Address KmpTaskSharedsPtr, LValue TDBase, - const RecordDecl *KmpTaskTWithPrivatesQTyRD, - QualType SharedsTy, QualType SharedsPtrTy, - const OMPTaskDataTy &Data, - ArrayRef<PrivateDataTy> Privates, bool ForDup) { - ASTContext &C = CGF.getContext(); - auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin()); - LValue PrivatesBase = CGF.EmitLValueForField(TDBase, *FI); - OpenMPDirectiveKind Kind = isOpenMPTaskLoopDirective(D.getDirectiveKind()) - ? OMPD_taskloop - : OMPD_task; - const CapturedStmt &CS = *D.getCapturedStmt(Kind); - CodeGenFunction::CGCapturedStmtInfo CapturesInfo(CS); - LValue SrcBase; - bool IsTargetTask = - isOpenMPTargetDataManagementDirective(D.getDirectiveKind()) || - isOpenMPTargetExecutionDirective(D.getDirectiveKind()); - // For target-based directives skip 3 firstprivate arrays BasePointersArray, - // PointersArray and SizesArray. The original variables for these arrays are - // not captured and we get their addresses explicitly. - if ((!IsTargetTask && !Data.FirstprivateVars.empty()) || - (IsTargetTask && KmpTaskSharedsPtr.isValid())) { - SrcBase = CGF.MakeAddrLValue( - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - KmpTaskSharedsPtr, CGF.ConvertTypeForMem(SharedsPtrTy)), - SharedsTy); - } - FI = cast<RecordDecl>(FI->getType()->getAsTagDecl())->field_begin(); - for (const PrivateDataTy &Pair : Privates) { - const VarDecl *VD = Pair.second.PrivateCopy; - const Expr *Init = VD->getAnyInitializer(); - if (Init && (!ForDup || (isa<CXXConstructExpr>(Init) && - !CGF.isTrivialInitializer(Init)))) { - LValue PrivateLValue = CGF.EmitLValueForField(PrivatesBase, *FI); - if (const VarDecl *Elem = Pair.second.PrivateElemInit) { - const VarDecl *OriginalVD = Pair.second.Original; - // Check if the variable is the target-based BasePointersArray, - // PointersArray or SizesArray. - LValue SharedRefLValue; - QualType Type = OriginalVD->getType(); - const FieldDecl *SharedField = CapturesInfo.lookup(OriginalVD); - if (IsTargetTask && !SharedField) { - assert(isa<ImplicitParamDecl>(OriginalVD) && - isa<CapturedDecl>(OriginalVD->getDeclContext()) && - cast<CapturedDecl>(OriginalVD->getDeclContext()) - ->getNumParams() == 0 && - isa<TranslationUnitDecl>( - cast<CapturedDecl>(OriginalVD->getDeclContext()) - ->getDeclContext()) && - "Expected artificial target data variable."); - SharedRefLValue = - CGF.MakeAddrLValue(CGF.GetAddrOfLocalVar(OriginalVD), Type); - } else { - SharedRefLValue = CGF.EmitLValueForField(SrcBase, SharedField); - SharedRefLValue = CGF.MakeAddrLValue( - Address(SharedRefLValue.getPointer(), C.getDeclAlign(OriginalVD)), - SharedRefLValue.getType(), LValueBaseInfo(AlignmentSource::Decl), - SharedRefLValue.getTBAAInfo()); - } - if (Type->isArrayType()) { - // Initialize firstprivate array. - if (!isa<CXXConstructExpr>(Init) || CGF.isTrivialInitializer(Init)) { - // Perform simple memcpy. - CGF.EmitAggregateAssign(PrivateLValue, SharedRefLValue, Type); - } else { - // Initialize firstprivate array using element-by-element - // initialization. - CGF.EmitOMPAggregateAssign( - PrivateLValue.getAddress(), SharedRefLValue.getAddress(), Type, - [&CGF, Elem, Init, &CapturesInfo](Address DestElement, - Address SrcElement) { - // Clean up any temporaries needed by the initialization. - CodeGenFunction::OMPPrivateScope InitScope(CGF); - InitScope.addPrivate( - Elem, [SrcElement]() -> Address { return SrcElement; }); - (void)InitScope.Privatize(); - // Emit initialization for single element. - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII( - CGF, &CapturesInfo); - CGF.EmitAnyExprToMem(Init, DestElement, - Init->getType().getQualifiers(), - /*IsInitializer=*/false); - }); - } - } else { - CodeGenFunction::OMPPrivateScope InitScope(CGF); - InitScope.addPrivate(Elem, [SharedRefLValue]() -> Address { - return SharedRefLValue.getAddress(); - }); - (void)InitScope.Privatize(); - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CapturesInfo); - CGF.EmitExprAsInit(Init, VD, PrivateLValue, - /*capturedByInit=*/false); - } - } else { - CGF.EmitExprAsInit(Init, VD, PrivateLValue, /*capturedByInit=*/false); - } - } - ++FI; - } -} - -/// Check if duplication function is required for taskloops. -static bool checkInitIsRequired(CodeGenFunction &CGF, - ArrayRef<PrivateDataTy> Privates) { - bool InitRequired = false; - for (const PrivateDataTy &Pair : Privates) { - const VarDecl *VD = Pair.second.PrivateCopy; - const Expr *Init = VD->getAnyInitializer(); - InitRequired = InitRequired || (Init && isa<CXXConstructExpr>(Init) && - !CGF.isTrivialInitializer(Init)); - if (InitRequired) - break; - } - return InitRequired; -} - - -/// Emit task_dup function (for initialization of -/// private/firstprivate/lastprivate vars and last_iter flag) -/// \code -/// void __task_dup_entry(kmp_task_t *task_dst, const kmp_task_t *task_src, int -/// lastpriv) { -/// // setup lastprivate flag -/// task_dst->last = lastpriv; -/// // could be constructor calls here... -/// } -/// \endcode -static llvm::Value * -emitTaskDupFunction(CodeGenModule &CGM, SourceLocation Loc, - const OMPExecutableDirective &D, - QualType KmpTaskTWithPrivatesPtrQTy, - const RecordDecl *KmpTaskTWithPrivatesQTyRD, - const RecordDecl *KmpTaskTQTyRD, QualType SharedsTy, - QualType SharedsPtrTy, const OMPTaskDataTy &Data, - ArrayRef<PrivateDataTy> Privates, bool WithLastIter) { - ASTContext &C = CGM.getContext(); - FunctionArgList Args; - ImplicitParamDecl DstArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - KmpTaskTWithPrivatesPtrQTy, - ImplicitParamDecl::Other); - ImplicitParamDecl SrcArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - KmpTaskTWithPrivatesPtrQTy, - ImplicitParamDecl::Other); - ImplicitParamDecl LastprivArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.IntTy, - ImplicitParamDecl::Other); - Args.push_back(&DstArg); - Args.push_back(&SrcArg); - Args.push_back(&LastprivArg); - const auto &TaskDupFnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *TaskDupTy = CGM.getTypes().GetFunctionType(TaskDupFnInfo); - std::string Name = CGM.getOpenMPRuntime().getName({"omp_task_dup", ""}); - auto *TaskDup = llvm::Function::Create( - TaskDupTy, llvm::GlobalValue::InternalLinkage, Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), TaskDup, TaskDupFnInfo); - TaskDup->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, TaskDup, TaskDupFnInfo, Args, Loc, - Loc); - - LValue TDBase = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(&DstArg), - KmpTaskTWithPrivatesPtrQTy->castAs<PointerType>()); - // task_dst->liter = lastpriv; - if (WithLastIter) { - auto LIFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTLastIter); - LValue Base = CGF.EmitLValueForField( - TDBase, *KmpTaskTWithPrivatesQTyRD->field_begin()); - LValue LILVal = CGF.EmitLValueForField(Base, *LIFI); - llvm::Value *Lastpriv = CGF.EmitLoadOfScalar( - CGF.GetAddrOfLocalVar(&LastprivArg), /*Volatile=*/false, C.IntTy, Loc); - CGF.EmitStoreOfScalar(Lastpriv, LILVal); - } - - // Emit initial values for private copies (if any). - assert(!Privates.empty()); - Address KmpTaskSharedsPtr = Address::invalid(); - if (!Data.FirstprivateVars.empty()) { - LValue TDBase = CGF.EmitLoadOfPointerLValue( - CGF.GetAddrOfLocalVar(&SrcArg), - KmpTaskTWithPrivatesPtrQTy->castAs<PointerType>()); - LValue Base = CGF.EmitLValueForField( - TDBase, *KmpTaskTWithPrivatesQTyRD->field_begin()); - KmpTaskSharedsPtr = Address( - CGF.EmitLoadOfScalar(CGF.EmitLValueForField( - Base, *std::next(KmpTaskTQTyRD->field_begin(), - KmpTaskTShareds)), - Loc), - CGF.getNaturalTypeAlignment(SharedsTy)); - } - emitPrivatesInit(CGF, D, KmpTaskSharedsPtr, TDBase, KmpTaskTWithPrivatesQTyRD, - SharedsTy, SharedsPtrTy, Data, Privates, /*ForDup=*/true); - CGF.FinishFunction(); - return TaskDup; -} - -/// Checks if destructor function is required to be generated. -/// \return true if cleanups are required, false otherwise. -static bool -checkDestructorsRequired(const RecordDecl *KmpTaskTWithPrivatesQTyRD) { - bool NeedsCleanup = false; - auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin(), 1); - const auto *PrivateRD = cast<RecordDecl>(FI->getType()->getAsTagDecl()); - for (const FieldDecl *FD : PrivateRD->fields()) { - NeedsCleanup = NeedsCleanup || FD->getType().isDestructedType(); - if (NeedsCleanup) - break; - } - return NeedsCleanup; -} - -CGOpenMPRuntime::TaskResultTy -CGOpenMPRuntime::emitTaskInit(CodeGenFunction &CGF, SourceLocation Loc, - const OMPExecutableDirective &D, - llvm::Value *TaskFunction, QualType SharedsTy, - Address Shareds, const OMPTaskDataTy &Data) { - ASTContext &C = CGM.getContext(); - llvm::SmallVector<PrivateDataTy, 4> Privates; - // Aggregate privates and sort them by the alignment. - auto I = Data.PrivateCopies.begin(); - for (const Expr *E : Data.PrivateVars) { - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); - Privates.emplace_back( - C.getDeclAlign(VD), - PrivateHelpersTy(VD, cast<VarDecl>(cast<DeclRefExpr>(*I)->getDecl()), - /*PrivateElemInit=*/nullptr)); - ++I; - } - I = Data.FirstprivateCopies.begin(); - auto IElemInitRef = Data.FirstprivateInits.begin(); - for (const Expr *E : Data.FirstprivateVars) { - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); - Privates.emplace_back( - C.getDeclAlign(VD), - PrivateHelpersTy( - VD, cast<VarDecl>(cast<DeclRefExpr>(*I)->getDecl()), - cast<VarDecl>(cast<DeclRefExpr>(*IElemInitRef)->getDecl()))); - ++I; - ++IElemInitRef; - } - I = Data.LastprivateCopies.begin(); - for (const Expr *E : Data.LastprivateVars) { - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(E)->getDecl()); - Privates.emplace_back( - C.getDeclAlign(VD), - PrivateHelpersTy(VD, cast<VarDecl>(cast<DeclRefExpr>(*I)->getDecl()), - /*PrivateElemInit=*/nullptr)); - ++I; - } - std::stable_sort(Privates.begin(), Privates.end(), stable_sort_comparator); - QualType KmpInt32Ty = C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/1); - // Build type kmp_routine_entry_t (if not built yet). - emitKmpRoutineEntryT(KmpInt32Ty); - // Build type kmp_task_t (if not built yet). - if (isOpenMPTaskLoopDirective(D.getDirectiveKind())) { - if (SavedKmpTaskloopTQTy.isNull()) { - SavedKmpTaskloopTQTy = C.getRecordType(createKmpTaskTRecordDecl( - CGM, D.getDirectiveKind(), KmpInt32Ty, KmpRoutineEntryPtrQTy)); - } - KmpTaskTQTy = SavedKmpTaskloopTQTy; - } else { - assert((D.getDirectiveKind() == OMPD_task || - isOpenMPTargetExecutionDirective(D.getDirectiveKind()) || - isOpenMPTargetDataManagementDirective(D.getDirectiveKind())) && - "Expected taskloop, task or target directive"); - if (SavedKmpTaskTQTy.isNull()) { - SavedKmpTaskTQTy = C.getRecordType(createKmpTaskTRecordDecl( - CGM, D.getDirectiveKind(), KmpInt32Ty, KmpRoutineEntryPtrQTy)); - } - KmpTaskTQTy = SavedKmpTaskTQTy; - } - const auto *KmpTaskTQTyRD = cast<RecordDecl>(KmpTaskTQTy->getAsTagDecl()); - // Build particular struct kmp_task_t for the given task. - const RecordDecl *KmpTaskTWithPrivatesQTyRD = - createKmpTaskTWithPrivatesRecordDecl(CGM, KmpTaskTQTy, Privates); - QualType KmpTaskTWithPrivatesQTy = C.getRecordType(KmpTaskTWithPrivatesQTyRD); - QualType KmpTaskTWithPrivatesPtrQTy = - C.getPointerType(KmpTaskTWithPrivatesQTy); - llvm::Type *KmpTaskTWithPrivatesTy = CGF.ConvertType(KmpTaskTWithPrivatesQTy); - llvm::Type *KmpTaskTWithPrivatesPtrTy = - KmpTaskTWithPrivatesTy->getPointerTo(); - llvm::Value *KmpTaskTWithPrivatesTySize = - CGF.getTypeSize(KmpTaskTWithPrivatesQTy); - QualType SharedsPtrTy = C.getPointerType(SharedsTy); - - // Emit initial values for private copies (if any). - llvm::Value *TaskPrivatesMap = nullptr; - llvm::Type *TaskPrivatesMapTy = - std::next(cast<llvm::Function>(TaskFunction)->arg_begin(), 3)->getType(); - if (!Privates.empty()) { - auto FI = std::next(KmpTaskTWithPrivatesQTyRD->field_begin()); - TaskPrivatesMap = emitTaskPrivateMappingFunction( - CGM, Loc, Data.PrivateVars, Data.FirstprivateVars, Data.LastprivateVars, - FI->getType(), Privates); - TaskPrivatesMap = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - TaskPrivatesMap, TaskPrivatesMapTy); - } else { - TaskPrivatesMap = llvm::ConstantPointerNull::get( - cast<llvm::PointerType>(TaskPrivatesMapTy)); - } - // Build a proxy function kmp_int32 .omp_task_entry.(kmp_int32 gtid, - // kmp_task_t *tt); - llvm::Value *TaskEntry = emitProxyTaskFunction( - CGM, Loc, D.getDirectiveKind(), KmpInt32Ty, KmpTaskTWithPrivatesPtrQTy, - KmpTaskTWithPrivatesQTy, KmpTaskTQTy, SharedsPtrTy, TaskFunction, - TaskPrivatesMap); - - // Build call kmp_task_t * __kmpc_omp_task_alloc(ident_t *, kmp_int32 gtid, - // kmp_int32 flags, size_t sizeof_kmp_task_t, size_t sizeof_shareds, - // kmp_routine_entry_t *task_entry); - // Task flags. Format is taken from - // http://llvm.org/svn/llvm-project/openmp/trunk/runtime/src/kmp.h, - // description of kmp_tasking_flags struct. - enum { - TiedFlag = 0x1, - FinalFlag = 0x2, - DestructorsFlag = 0x8, - PriorityFlag = 0x20 - }; - unsigned Flags = Data.Tied ? TiedFlag : 0; - bool NeedsCleanup = false; - if (!Privates.empty()) { - NeedsCleanup = checkDestructorsRequired(KmpTaskTWithPrivatesQTyRD); - if (NeedsCleanup) - Flags = Flags | DestructorsFlag; - } - if (Data.Priority.getInt()) - Flags = Flags | PriorityFlag; - llvm::Value *TaskFlags = - Data.Final.getPointer() - ? CGF.Builder.CreateSelect(Data.Final.getPointer(), - CGF.Builder.getInt32(FinalFlag), - CGF.Builder.getInt32(/*C=*/0)) - : CGF.Builder.getInt32(Data.Final.getInt() ? FinalFlag : 0); - TaskFlags = CGF.Builder.CreateOr(TaskFlags, CGF.Builder.getInt32(Flags)); - llvm::Value *SharedsSize = CGM.getSize(C.getTypeSizeInChars(SharedsTy)); - llvm::Value *AllocArgs[] = {emitUpdateLocation(CGF, Loc), - getThreadID(CGF, Loc), TaskFlags, - KmpTaskTWithPrivatesTySize, SharedsSize, - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - TaskEntry, KmpRoutineEntryPtrTy)}; - llvm::Value *NewTask = CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_omp_task_alloc), AllocArgs); - llvm::Value *NewTaskNewTaskTTy = - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - NewTask, KmpTaskTWithPrivatesPtrTy); - LValue Base = CGF.MakeNaturalAlignAddrLValue(NewTaskNewTaskTTy, - KmpTaskTWithPrivatesQTy); - LValue TDBase = - CGF.EmitLValueForField(Base, *KmpTaskTWithPrivatesQTyRD->field_begin()); - // Fill the data in the resulting kmp_task_t record. - // Copy shareds if there are any. - Address KmpTaskSharedsPtr = Address::invalid(); - if (!SharedsTy->getAsStructureType()->getDecl()->field_empty()) { - KmpTaskSharedsPtr = - Address(CGF.EmitLoadOfScalar( - CGF.EmitLValueForField( - TDBase, *std::next(KmpTaskTQTyRD->field_begin(), - KmpTaskTShareds)), - Loc), - CGF.getNaturalTypeAlignment(SharedsTy)); - LValue Dest = CGF.MakeAddrLValue(KmpTaskSharedsPtr, SharedsTy); - LValue Src = CGF.MakeAddrLValue(Shareds, SharedsTy); - CGF.EmitAggregateCopy(Dest, Src, SharedsTy, AggValueSlot::DoesNotOverlap); - } - // Emit initial values for private copies (if any). - TaskResultTy Result; - if (!Privates.empty()) { - emitPrivatesInit(CGF, D, KmpTaskSharedsPtr, Base, KmpTaskTWithPrivatesQTyRD, - SharedsTy, SharedsPtrTy, Data, Privates, - /*ForDup=*/false); - if (isOpenMPTaskLoopDirective(D.getDirectiveKind()) && - (!Data.LastprivateVars.empty() || checkInitIsRequired(CGF, Privates))) { - Result.TaskDupFn = emitTaskDupFunction( - CGM, Loc, D, KmpTaskTWithPrivatesPtrQTy, KmpTaskTWithPrivatesQTyRD, - KmpTaskTQTyRD, SharedsTy, SharedsPtrTy, Data, Privates, - /*WithLastIter=*/!Data.LastprivateVars.empty()); - } - } - // Fields of union "kmp_cmplrdata_t" for destructors and priority. - enum { Priority = 0, Destructors = 1 }; - // Provide pointer to function with destructors for privates. - auto FI = std::next(KmpTaskTQTyRD->field_begin(), Data1); - const RecordDecl *KmpCmplrdataUD = - (*FI)->getType()->getAsUnionType()->getDecl(); - if (NeedsCleanup) { - llvm::Value *DestructorFn = emitDestructorsFunction( - CGM, Loc, KmpInt32Ty, KmpTaskTWithPrivatesPtrQTy, - KmpTaskTWithPrivatesQTy); - LValue Data1LV = CGF.EmitLValueForField(TDBase, *FI); - LValue DestructorsLV = CGF.EmitLValueForField( - Data1LV, *std::next(KmpCmplrdataUD->field_begin(), Destructors)); - CGF.EmitStoreOfScalar(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - DestructorFn, KmpRoutineEntryPtrTy), - DestructorsLV); - } - // Set priority. - if (Data.Priority.getInt()) { - LValue Data2LV = CGF.EmitLValueForField( - TDBase, *std::next(KmpTaskTQTyRD->field_begin(), Data2)); - LValue PriorityLV = CGF.EmitLValueForField( - Data2LV, *std::next(KmpCmplrdataUD->field_begin(), Priority)); - CGF.EmitStoreOfScalar(Data.Priority.getPointer(), PriorityLV); - } - Result.NewTask = NewTask; - Result.TaskEntry = TaskEntry; - Result.NewTaskNewTaskTTy = NewTaskNewTaskTTy; - Result.TDBase = TDBase; - Result.KmpTaskTQTyRD = KmpTaskTQTyRD; - return Result; -} - -void CGOpenMPRuntime::emitTaskCall(CodeGenFunction &CGF, SourceLocation Loc, - const OMPExecutableDirective &D, - llvm::Value *TaskFunction, - QualType SharedsTy, Address Shareds, - const Expr *IfCond, - const OMPTaskDataTy &Data) { - if (!CGF.HaveInsertPoint()) - return; - - TaskResultTy Result = - emitTaskInit(CGF, Loc, D, TaskFunction, SharedsTy, Shareds, Data); - llvm::Value *NewTask = Result.NewTask; - llvm::Value *TaskEntry = Result.TaskEntry; - llvm::Value *NewTaskNewTaskTTy = Result.NewTaskNewTaskTTy; - LValue TDBase = Result.TDBase; - const RecordDecl *KmpTaskTQTyRD = Result.KmpTaskTQTyRD; - ASTContext &C = CGM.getContext(); - // Process list of dependences. - Address DependenciesArray = Address::invalid(); - unsigned NumDependencies = Data.Dependences.size(); - if (NumDependencies) { - // Dependence kind for RTL. - enum RTLDependenceKindTy { DepIn = 0x01, DepInOut = 0x3 }; - enum RTLDependInfoFieldsTy { BaseAddr, Len, Flags }; - RecordDecl *KmpDependInfoRD; - QualType FlagsTy = - C.getIntTypeForBitwidth(C.getTypeSize(C.BoolTy), /*Signed=*/false); - llvm::Type *LLVMFlagsTy = CGF.ConvertTypeForMem(FlagsTy); - if (KmpDependInfoTy.isNull()) { - KmpDependInfoRD = C.buildImplicitRecord("kmp_depend_info"); - KmpDependInfoRD->startDefinition(); - addFieldToRecordDecl(C, KmpDependInfoRD, C.getIntPtrType()); - addFieldToRecordDecl(C, KmpDependInfoRD, C.getSizeType()); - addFieldToRecordDecl(C, KmpDependInfoRD, FlagsTy); - KmpDependInfoRD->completeDefinition(); - KmpDependInfoTy = C.getRecordType(KmpDependInfoRD); - } else { - KmpDependInfoRD = cast<RecordDecl>(KmpDependInfoTy->getAsTagDecl()); - } - CharUnits DependencySize = C.getTypeSizeInChars(KmpDependInfoTy); - // Define type kmp_depend_info[<Dependences.size()>]; - QualType KmpDependInfoArrayTy = C.getConstantArrayType( - KmpDependInfoTy, llvm::APInt(/*numBits=*/64, NumDependencies), - ArrayType::Normal, /*IndexTypeQuals=*/0); - // kmp_depend_info[<Dependences.size()>] deps; - DependenciesArray = - CGF.CreateMemTemp(KmpDependInfoArrayTy, ".dep.arr.addr"); - for (unsigned I = 0; I < NumDependencies; ++I) { - const Expr *E = Data.Dependences[I].second; - LValue Addr = CGF.EmitLValue(E); - llvm::Value *Size; - QualType Ty = E->getType(); - if (const auto *ASE = - dyn_cast<OMPArraySectionExpr>(E->IgnoreParenImpCasts())) { - LValue UpAddrLVal = - CGF.EmitOMPArraySectionExpr(ASE, /*LowerBound=*/false); - llvm::Value *UpAddr = - CGF.Builder.CreateConstGEP1_32(UpAddrLVal.getPointer(), /*Idx0=*/1); - llvm::Value *LowIntPtr = - CGF.Builder.CreatePtrToInt(Addr.getPointer(), CGM.SizeTy); - llvm::Value *UpIntPtr = CGF.Builder.CreatePtrToInt(UpAddr, CGM.SizeTy); - Size = CGF.Builder.CreateNUWSub(UpIntPtr, LowIntPtr); - } else { - Size = CGF.getTypeSize(Ty); - } - LValue Base = CGF.MakeAddrLValue( - CGF.Builder.CreateConstArrayGEP(DependenciesArray, I, DependencySize), - KmpDependInfoTy); - // deps[i].base_addr = &<Dependences[i].second>; - LValue BaseAddrLVal = CGF.EmitLValueForField( - Base, *std::next(KmpDependInfoRD->field_begin(), BaseAddr)); - CGF.EmitStoreOfScalar( - CGF.Builder.CreatePtrToInt(Addr.getPointer(), CGF.IntPtrTy), - BaseAddrLVal); - // deps[i].len = sizeof(<Dependences[i].second>); - LValue LenLVal = CGF.EmitLValueForField( - Base, *std::next(KmpDependInfoRD->field_begin(), Len)); - CGF.EmitStoreOfScalar(Size, LenLVal); - // deps[i].flags = <Dependences[i].first>; - RTLDependenceKindTy DepKind; - switch (Data.Dependences[I].first) { - case OMPC_DEPEND_in: - DepKind = DepIn; - break; - // Out and InOut dependencies must use the same code. - case OMPC_DEPEND_out: - case OMPC_DEPEND_inout: - DepKind = DepInOut; - break; - case OMPC_DEPEND_source: - case OMPC_DEPEND_sink: - case OMPC_DEPEND_unknown: - llvm_unreachable("Unknown task dependence type"); - } - LValue FlagsLVal = CGF.EmitLValueForField( - Base, *std::next(KmpDependInfoRD->field_begin(), Flags)); - CGF.EmitStoreOfScalar(llvm::ConstantInt::get(LLVMFlagsTy, DepKind), - FlagsLVal); - } - DependenciesArray = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.Builder.CreateStructGEP(DependenciesArray, 0, CharUnits::Zero()), - CGF.VoidPtrTy); - } - - // NOTE: routine and part_id fields are initialized by __kmpc_omp_task_alloc() - // libcall. - // Build kmp_int32 __kmpc_omp_task_with_deps(ident_t *, kmp_int32 gtid, - // kmp_task_t *new_task, kmp_int32 ndeps, kmp_depend_info_t *dep_list, - // kmp_int32 ndeps_noalias, kmp_depend_info_t *noalias_dep_list) if dependence - // list is not empty - llvm::Value *ThreadID = getThreadID(CGF, Loc); - llvm::Value *UpLoc = emitUpdateLocation(CGF, Loc); - llvm::Value *TaskArgs[] = { UpLoc, ThreadID, NewTask }; - llvm::Value *DepTaskArgs[7]; - if (NumDependencies) { - DepTaskArgs[0] = UpLoc; - DepTaskArgs[1] = ThreadID; - DepTaskArgs[2] = NewTask; - DepTaskArgs[3] = CGF.Builder.getInt32(NumDependencies); - DepTaskArgs[4] = DependenciesArray.getPointer(); - DepTaskArgs[5] = CGF.Builder.getInt32(0); - DepTaskArgs[6] = llvm::ConstantPointerNull::get(CGF.VoidPtrTy); - } - auto &&ThenCodeGen = [this, &Data, TDBase, KmpTaskTQTyRD, NumDependencies, - &TaskArgs, - &DepTaskArgs](CodeGenFunction &CGF, PrePostActionTy &) { - if (!Data.Tied) { - auto PartIdFI = std::next(KmpTaskTQTyRD->field_begin(), KmpTaskTPartId); - LValue PartIdLVal = CGF.EmitLValueForField(TDBase, *PartIdFI); - CGF.EmitStoreOfScalar(CGF.Builder.getInt32(0), PartIdLVal); - } - if (NumDependencies) { - CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_omp_task_with_deps), DepTaskArgs); - } else { - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_task), - TaskArgs); - } - // Check if parent region is untied and build return for untied task; - if (auto *Region = - dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) - Region->emitUntiedSwitch(CGF); - }; - - llvm::Value *DepWaitTaskArgs[6]; - if (NumDependencies) { - DepWaitTaskArgs[0] = UpLoc; - DepWaitTaskArgs[1] = ThreadID; - DepWaitTaskArgs[2] = CGF.Builder.getInt32(NumDependencies); - DepWaitTaskArgs[3] = DependenciesArray.getPointer(); - DepWaitTaskArgs[4] = CGF.Builder.getInt32(0); - DepWaitTaskArgs[5] = llvm::ConstantPointerNull::get(CGF.VoidPtrTy); - } - auto &&ElseCodeGen = [&TaskArgs, ThreadID, NewTaskNewTaskTTy, TaskEntry, - NumDependencies, &DepWaitTaskArgs, - Loc](CodeGenFunction &CGF, PrePostActionTy &) { - CGOpenMPRuntime &RT = CGF.CGM.getOpenMPRuntime(); - CodeGenFunction::RunCleanupsScope LocalScope(CGF); - // Build void __kmpc_omp_wait_deps(ident_t *, kmp_int32 gtid, - // kmp_int32 ndeps, kmp_depend_info_t *dep_list, kmp_int32 - // ndeps_noalias, kmp_depend_info_t *noalias_dep_list); if dependence info - // is specified. - if (NumDependencies) - CGF.EmitRuntimeCall(RT.createRuntimeFunction(OMPRTL__kmpc_omp_wait_deps), - DepWaitTaskArgs); - // Call proxy_task_entry(gtid, new_task); - auto &&CodeGen = [TaskEntry, ThreadID, NewTaskNewTaskTTy, - Loc](CodeGenFunction &CGF, PrePostActionTy &Action) { - Action.Enter(CGF); - llvm::Value *OutlinedFnArgs[] = {ThreadID, NewTaskNewTaskTTy}; - CGF.CGM.getOpenMPRuntime().emitOutlinedFunctionCall(CGF, Loc, TaskEntry, - OutlinedFnArgs); - }; - - // Build void __kmpc_omp_task_begin_if0(ident_t *, kmp_int32 gtid, - // kmp_task_t *new_task); - // Build void __kmpc_omp_task_complete_if0(ident_t *, kmp_int32 gtid, - // kmp_task_t *new_task); - RegionCodeGenTy RCG(CodeGen); - CommonActionTy Action( - RT.createRuntimeFunction(OMPRTL__kmpc_omp_task_begin_if0), TaskArgs, - RT.createRuntimeFunction(OMPRTL__kmpc_omp_task_complete_if0), TaskArgs); - RCG.setAction(Action); - RCG(CGF); - }; - - if (IfCond) { - emitOMPIfClause(CGF, IfCond, ThenCodeGen, ElseCodeGen); - } else { - RegionCodeGenTy ThenRCG(ThenCodeGen); - ThenRCG(CGF); - } -} - -void CGOpenMPRuntime::emitTaskLoopCall(CodeGenFunction &CGF, SourceLocation Loc, - const OMPLoopDirective &D, - llvm::Value *TaskFunction, - QualType SharedsTy, Address Shareds, - const Expr *IfCond, - const OMPTaskDataTy &Data) { - if (!CGF.HaveInsertPoint()) - return; - TaskResultTy Result = - emitTaskInit(CGF, Loc, D, TaskFunction, SharedsTy, Shareds, Data); - // NOTE: routine and part_id fields are initialized by __kmpc_omp_task_alloc() - // libcall. - // Call to void __kmpc_taskloop(ident_t *loc, int gtid, kmp_task_t *task, int - // if_val, kmp_uint64 *lb, kmp_uint64 *ub, kmp_int64 st, int nogroup, int - // sched, kmp_uint64 grainsize, void *task_dup); - llvm::Value *ThreadID = getThreadID(CGF, Loc); - llvm::Value *UpLoc = emitUpdateLocation(CGF, Loc); - llvm::Value *IfVal; - if (IfCond) { - IfVal = CGF.Builder.CreateIntCast(CGF.EvaluateExprAsBool(IfCond), CGF.IntTy, - /*isSigned=*/true); - } else { - IfVal = llvm::ConstantInt::getSigned(CGF.IntTy, /*V=*/1); - } - - LValue LBLVal = CGF.EmitLValueForField( - Result.TDBase, - *std::next(Result.KmpTaskTQTyRD->field_begin(), KmpTaskTLowerBound)); - const auto *LBVar = - cast<VarDecl>(cast<DeclRefExpr>(D.getLowerBoundVariable())->getDecl()); - CGF.EmitAnyExprToMem(LBVar->getInit(), LBLVal.getAddress(), LBLVal.getQuals(), - /*IsInitializer=*/true); - LValue UBLVal = CGF.EmitLValueForField( - Result.TDBase, - *std::next(Result.KmpTaskTQTyRD->field_begin(), KmpTaskTUpperBound)); - const auto *UBVar = - cast<VarDecl>(cast<DeclRefExpr>(D.getUpperBoundVariable())->getDecl()); - CGF.EmitAnyExprToMem(UBVar->getInit(), UBLVal.getAddress(), UBLVal.getQuals(), - /*IsInitializer=*/true); - LValue StLVal = CGF.EmitLValueForField( - Result.TDBase, - *std::next(Result.KmpTaskTQTyRD->field_begin(), KmpTaskTStride)); - const auto *StVar = - cast<VarDecl>(cast<DeclRefExpr>(D.getStrideVariable())->getDecl()); - CGF.EmitAnyExprToMem(StVar->getInit(), StLVal.getAddress(), StLVal.getQuals(), - /*IsInitializer=*/true); - // Store reductions address. - LValue RedLVal = CGF.EmitLValueForField( - Result.TDBase, - *std::next(Result.KmpTaskTQTyRD->field_begin(), KmpTaskTReductions)); - if (Data.Reductions) { - CGF.EmitStoreOfScalar(Data.Reductions, RedLVal); - } else { - CGF.EmitNullInitialization(RedLVal.getAddress(), - CGF.getContext().VoidPtrTy); - } - enum { NoSchedule = 0, Grainsize = 1, NumTasks = 2 }; - llvm::Value *TaskArgs[] = { - UpLoc, - ThreadID, - Result.NewTask, - IfVal, - LBLVal.getPointer(), - UBLVal.getPointer(), - CGF.EmitLoadOfScalar(StLVal, Loc), - llvm::ConstantInt::getSigned( - CGF.IntTy, 1), // Always 1 because taskgroup emitted by the compiler - llvm::ConstantInt::getSigned( - CGF.IntTy, Data.Schedule.getPointer() - ? Data.Schedule.getInt() ? NumTasks : Grainsize - : NoSchedule), - Data.Schedule.getPointer() - ? CGF.Builder.CreateIntCast(Data.Schedule.getPointer(), CGF.Int64Ty, - /*isSigned=*/false) - : llvm::ConstantInt::get(CGF.Int64Ty, /*V=*/0), - Result.TaskDupFn ? CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - Result.TaskDupFn, CGF.VoidPtrTy) - : llvm::ConstantPointerNull::get(CGF.VoidPtrTy)}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_taskloop), TaskArgs); -} - -/// Emit reduction operation for each element of array (required for -/// array sections) LHS op = RHS. -/// \param Type Type of array. -/// \param LHSVar Variable on the left side of the reduction operation -/// (references element of array in original variable). -/// \param RHSVar Variable on the right side of the reduction operation -/// (references element of array in original variable). -/// \param RedOpGen Generator of reduction operation with use of LHSVar and -/// RHSVar. -static void EmitOMPAggregateReduction( - CodeGenFunction &CGF, QualType Type, const VarDecl *LHSVar, - const VarDecl *RHSVar, - const llvm::function_ref<void(CodeGenFunction &CGF, const Expr *, - const Expr *, const Expr *)> &RedOpGen, - const Expr *XExpr = nullptr, const Expr *EExpr = nullptr, - const Expr *UpExpr = nullptr) { - // Perform element-by-element initialization. - QualType ElementTy; - Address LHSAddr = CGF.GetAddrOfLocalVar(LHSVar); - Address RHSAddr = CGF.GetAddrOfLocalVar(RHSVar); - - // Drill down to the base element type on both arrays. - const ArrayType *ArrayTy = Type->getAsArrayTypeUnsafe(); - llvm::Value *NumElements = CGF.emitArrayLength(ArrayTy, ElementTy, LHSAddr); - - llvm::Value *RHSBegin = RHSAddr.getPointer(); - llvm::Value *LHSBegin = LHSAddr.getPointer(); - // Cast from pointer to array type to pointer to single element. - llvm::Value *LHSEnd = CGF.Builder.CreateGEP(LHSBegin, NumElements); - // The basic structure here is a while-do loop. - llvm::BasicBlock *BodyBB = CGF.createBasicBlock("omp.arraycpy.body"); - llvm::BasicBlock *DoneBB = CGF.createBasicBlock("omp.arraycpy.done"); - llvm::Value *IsEmpty = - CGF.Builder.CreateICmpEQ(LHSBegin, LHSEnd, "omp.arraycpy.isempty"); - CGF.Builder.CreateCondBr(IsEmpty, DoneBB, BodyBB); - - // Enter the loop body, making that address the current address. - llvm::BasicBlock *EntryBB = CGF.Builder.GetInsertBlock(); - CGF.EmitBlock(BodyBB); - - CharUnits ElementSize = CGF.getContext().getTypeSizeInChars(ElementTy); - - llvm::PHINode *RHSElementPHI = CGF.Builder.CreatePHI( - RHSBegin->getType(), 2, "omp.arraycpy.srcElementPast"); - RHSElementPHI->addIncoming(RHSBegin, EntryBB); - Address RHSElementCurrent = - Address(RHSElementPHI, - RHSAddr.getAlignment().alignmentOfArrayElement(ElementSize)); - - llvm::PHINode *LHSElementPHI = CGF.Builder.CreatePHI( - LHSBegin->getType(), 2, "omp.arraycpy.destElementPast"); - LHSElementPHI->addIncoming(LHSBegin, EntryBB); - Address LHSElementCurrent = - Address(LHSElementPHI, - LHSAddr.getAlignment().alignmentOfArrayElement(ElementSize)); - - // Emit copy. - CodeGenFunction::OMPPrivateScope Scope(CGF); - Scope.addPrivate(LHSVar, [=]() { return LHSElementCurrent; }); - Scope.addPrivate(RHSVar, [=]() { return RHSElementCurrent; }); - Scope.Privatize(); - RedOpGen(CGF, XExpr, EExpr, UpExpr); - Scope.ForceCleanup(); - - // Shift the address forward by one element. - llvm::Value *LHSElementNext = CGF.Builder.CreateConstGEP1_32( - LHSElementPHI, /*Idx0=*/1, "omp.arraycpy.dest.element"); - llvm::Value *RHSElementNext = CGF.Builder.CreateConstGEP1_32( - RHSElementPHI, /*Idx0=*/1, "omp.arraycpy.src.element"); - // Check whether we've reached the end. - llvm::Value *Done = - CGF.Builder.CreateICmpEQ(LHSElementNext, LHSEnd, "omp.arraycpy.done"); - CGF.Builder.CreateCondBr(Done, DoneBB, BodyBB); - LHSElementPHI->addIncoming(LHSElementNext, CGF.Builder.GetInsertBlock()); - RHSElementPHI->addIncoming(RHSElementNext, CGF.Builder.GetInsertBlock()); - - // Done. - CGF.EmitBlock(DoneBB, /*IsFinished=*/true); -} - -/// Emit reduction combiner. If the combiner is a simple expression emit it as -/// is, otherwise consider it as combiner of UDR decl and emit it as a call of -/// UDR combiner function. -static void emitReductionCombiner(CodeGenFunction &CGF, - const Expr *ReductionOp) { - if (const auto *CE = dyn_cast<CallExpr>(ReductionOp)) - if (const auto *OVE = dyn_cast<OpaqueValueExpr>(CE->getCallee())) - if (const auto *DRE = - dyn_cast<DeclRefExpr>(OVE->getSourceExpr()->IgnoreImpCasts())) - if (const auto *DRD = - dyn_cast<OMPDeclareReductionDecl>(DRE->getDecl())) { - std::pair<llvm::Function *, llvm::Function *> Reduction = - CGF.CGM.getOpenMPRuntime().getUserDefinedReduction(DRD); - RValue Func = RValue::get(Reduction.first); - CodeGenFunction::OpaqueValueMapping Map(CGF, OVE, Func); - CGF.EmitIgnoredExpr(ReductionOp); - return; - } - CGF.EmitIgnoredExpr(ReductionOp); -} - -llvm::Value *CGOpenMPRuntime::emitReductionFunction( - CodeGenModule &CGM, SourceLocation Loc, llvm::Type *ArgsType, - ArrayRef<const Expr *> Privates, ArrayRef<const Expr *> LHSExprs, - ArrayRef<const Expr *> RHSExprs, ArrayRef<const Expr *> ReductionOps) { - ASTContext &C = CGM.getContext(); - - // void reduction_func(void *LHSArg, void *RHSArg); - FunctionArgList Args; - ImplicitParamDecl LHSArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - ImplicitParamDecl RHSArg(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - Args.push_back(&LHSArg); - Args.push_back(&RHSArg); - const auto &CGFI = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - std::string Name = getName({"omp", "reduction", "reduction_func"}); - auto *Fn = llvm::Function::Create(CGM.getTypes().GetFunctionType(CGFI), - llvm::GlobalValue::InternalLinkage, Name, - &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, CGFI); - Fn->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, CGFI, Args, Loc, Loc); - - // Dst = (void*[n])(LHSArg); - // Src = (void*[n])(RHSArg); - Address LHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&LHSArg)), - ArgsType), CGF.getPointerAlign()); - Address RHS(CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(&RHSArg)), - ArgsType), CGF.getPointerAlign()); - - // ... - // *(Type<i>*)lhs[i] = RedOp<i>(*(Type<i>*)lhs[i], *(Type<i>*)rhs[i]); - // ... - CodeGenFunction::OMPPrivateScope Scope(CGF); - auto IPriv = Privates.begin(); - unsigned Idx = 0; - for (unsigned I = 0, E = ReductionOps.size(); I < E; ++I, ++IPriv, ++Idx) { - const auto *RHSVar = - cast<VarDecl>(cast<DeclRefExpr>(RHSExprs[I])->getDecl()); - Scope.addPrivate(RHSVar, [&CGF, RHS, Idx, RHSVar]() { - return emitAddrOfVarFromArray(CGF, RHS, Idx, RHSVar); - }); - const auto *LHSVar = - cast<VarDecl>(cast<DeclRefExpr>(LHSExprs[I])->getDecl()); - Scope.addPrivate(LHSVar, [&CGF, LHS, Idx, LHSVar]() { - return emitAddrOfVarFromArray(CGF, LHS, Idx, LHSVar); - }); - QualType PrivTy = (*IPriv)->getType(); - if (PrivTy->isVariablyModifiedType()) { - // Get array size and emit VLA type. - ++Idx; - Address Elem = - CGF.Builder.CreateConstArrayGEP(LHS, Idx, CGF.getPointerSize()); - llvm::Value *Ptr = CGF.Builder.CreateLoad(Elem); - const VariableArrayType *VLA = - CGF.getContext().getAsVariableArrayType(PrivTy); - const auto *OVE = cast<OpaqueValueExpr>(VLA->getSizeExpr()); - CodeGenFunction::OpaqueValueMapping OpaqueMap( - CGF, OVE, RValue::get(CGF.Builder.CreatePtrToInt(Ptr, CGF.SizeTy))); - CGF.EmitVariablyModifiedType(PrivTy); - } - } - Scope.Privatize(); - IPriv = Privates.begin(); - auto ILHS = LHSExprs.begin(); - auto IRHS = RHSExprs.begin(); - for (const Expr *E : ReductionOps) { - if ((*IPriv)->getType()->isArrayType()) { - // Emit reduction for array section. - const auto *LHSVar = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); - const auto *RHSVar = cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); - EmitOMPAggregateReduction( - CGF, (*IPriv)->getType(), LHSVar, RHSVar, - [=](CodeGenFunction &CGF, const Expr *, const Expr *, const Expr *) { - emitReductionCombiner(CGF, E); - }); - } else { - // Emit reduction for array subscript or single variable. - emitReductionCombiner(CGF, E); - } - ++IPriv; - ++ILHS; - ++IRHS; - } - Scope.ForceCleanup(); - CGF.FinishFunction(); - return Fn; -} - -void CGOpenMPRuntime::emitSingleReductionCombiner(CodeGenFunction &CGF, - const Expr *ReductionOp, - const Expr *PrivateRef, - const DeclRefExpr *LHS, - const DeclRefExpr *RHS) { - if (PrivateRef->getType()->isArrayType()) { - // Emit reduction for array section. - const auto *LHSVar = cast<VarDecl>(LHS->getDecl()); - const auto *RHSVar = cast<VarDecl>(RHS->getDecl()); - EmitOMPAggregateReduction( - CGF, PrivateRef->getType(), LHSVar, RHSVar, - [=](CodeGenFunction &CGF, const Expr *, const Expr *, const Expr *) { - emitReductionCombiner(CGF, ReductionOp); - }); - } else { - // Emit reduction for array subscript or single variable. - emitReductionCombiner(CGF, ReductionOp); - } -} - -void CGOpenMPRuntime::emitReduction(CodeGenFunction &CGF, SourceLocation Loc, - ArrayRef<const Expr *> Privates, - ArrayRef<const Expr *> LHSExprs, - ArrayRef<const Expr *> RHSExprs, - ArrayRef<const Expr *> ReductionOps, - ReductionOptionsTy Options) { - if (!CGF.HaveInsertPoint()) - return; - - bool WithNowait = Options.WithNowait; - bool SimpleReduction = Options.SimpleReduction; - - // Next code should be emitted for reduction: - // - // static kmp_critical_name lock = { 0 }; - // - // void reduce_func(void *lhs[<n>], void *rhs[<n>]) { - // *(Type0*)lhs[0] = ReductionOperation0(*(Type0*)lhs[0], *(Type0*)rhs[0]); - // ... - // *(Type<n>-1*)lhs[<n>-1] = ReductionOperation<n>-1(*(Type<n>-1*)lhs[<n>-1], - // *(Type<n>-1*)rhs[<n>-1]); - // } - // - // ... - // void *RedList[<n>] = {&<RHSExprs>[0], ..., &<RHSExprs>[<n>-1]}; - // switch (__kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), - // RedList, reduce_func, &<lock>)) { - // case 1: - // ... - // <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); - // ... - // __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); - // break; - // case 2: - // ... - // Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i])); - // ... - // [__kmpc_end_reduce(<loc>, <gtid>, &<lock>);] - // break; - // default:; - // } - // - // if SimpleReduction is true, only the next code is generated: - // ... - // <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); - // ... - - ASTContext &C = CGM.getContext(); - - if (SimpleReduction) { - CodeGenFunction::RunCleanupsScope Scope(CGF); - auto IPriv = Privates.begin(); - auto ILHS = LHSExprs.begin(); - auto IRHS = RHSExprs.begin(); - for (const Expr *E : ReductionOps) { - emitSingleReductionCombiner(CGF, E, *IPriv, cast<DeclRefExpr>(*ILHS), - cast<DeclRefExpr>(*IRHS)); - ++IPriv; - ++ILHS; - ++IRHS; - } - return; - } - - // 1. Build a list of reduction variables. - // void *RedList[<n>] = {<ReductionVars>[0], ..., <ReductionVars>[<n>-1]}; - auto Size = RHSExprs.size(); - for (const Expr *E : Privates) { - if (E->getType()->isVariablyModifiedType()) - // Reserve place for array size. - ++Size; - } - llvm::APInt ArraySize(/*unsigned int numBits=*/32, Size); - QualType ReductionArrayTy = - C.getConstantArrayType(C.VoidPtrTy, ArraySize, ArrayType::Normal, - /*IndexTypeQuals=*/0); - Address ReductionList = - CGF.CreateMemTemp(ReductionArrayTy, ".omp.reduction.red_list"); - auto IPriv = Privates.begin(); - unsigned Idx = 0; - for (unsigned I = 0, E = RHSExprs.size(); I < E; ++I, ++IPriv, ++Idx) { - Address Elem = - CGF.Builder.CreateConstArrayGEP(ReductionList, Idx, CGF.getPointerSize()); - CGF.Builder.CreateStore( - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.EmitLValue(RHSExprs[I]).getPointer(), CGF.VoidPtrTy), - Elem); - if ((*IPriv)->getType()->isVariablyModifiedType()) { - // Store array size. - ++Idx; - Elem = CGF.Builder.CreateConstArrayGEP(ReductionList, Idx, - CGF.getPointerSize()); - llvm::Value *Size = CGF.Builder.CreateIntCast( - CGF.getVLASize( - CGF.getContext().getAsVariableArrayType((*IPriv)->getType())) - .NumElts, - CGF.SizeTy, /*isSigned=*/false); - CGF.Builder.CreateStore(CGF.Builder.CreateIntToPtr(Size, CGF.VoidPtrTy), - Elem); - } - } - - // 2. Emit reduce_func(). - llvm::Value *ReductionFn = emitReductionFunction( - CGM, Loc, CGF.ConvertTypeForMem(ReductionArrayTy)->getPointerTo(), - Privates, LHSExprs, RHSExprs, ReductionOps); - - // 3. Create static kmp_critical_name lock = { 0 }; - std::string Name = getName({"reduction"}); - llvm::Value *Lock = getCriticalRegionLock(Name); - - // 4. Build res = __kmpc_reduce{_nowait}(<loc>, <gtid>, <n>, sizeof(RedList), - // RedList, reduce_func, &<lock>); - llvm::Value *IdentTLoc = emitUpdateLocation(CGF, Loc, OMP_ATOMIC_REDUCE); - llvm::Value *ThreadId = getThreadID(CGF, Loc); - llvm::Value *ReductionArrayTySize = CGF.getTypeSize(ReductionArrayTy); - llvm::Value *RL = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - ReductionList.getPointer(), CGF.VoidPtrTy); - llvm::Value *Args[] = { - IdentTLoc, // ident_t *<loc> - ThreadId, // i32 <gtid> - CGF.Builder.getInt32(RHSExprs.size()), // i32 <n> - ReductionArrayTySize, // size_type sizeof(RedList) - RL, // void *RedList - ReductionFn, // void (*) (void *, void *) <reduce_func> - Lock // kmp_critical_name *&<lock> - }; - llvm::Value *Res = CGF.EmitRuntimeCall( - createRuntimeFunction(WithNowait ? OMPRTL__kmpc_reduce_nowait - : OMPRTL__kmpc_reduce), - Args); - - // 5. Build switch(res) - llvm::BasicBlock *DefaultBB = CGF.createBasicBlock(".omp.reduction.default"); - llvm::SwitchInst *SwInst = - CGF.Builder.CreateSwitch(Res, DefaultBB, /*NumCases=*/2); - - // 6. Build case 1: - // ... - // <LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i]); - // ... - // __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); - // break; - llvm::BasicBlock *Case1BB = CGF.createBasicBlock(".omp.reduction.case1"); - SwInst->addCase(CGF.Builder.getInt32(1), Case1BB); - CGF.EmitBlock(Case1BB); - - // Add emission of __kmpc_end_reduce{_nowait}(<loc>, <gtid>, &<lock>); - llvm::Value *EndArgs[] = { - IdentTLoc, // ident_t *<loc> - ThreadId, // i32 <gtid> - Lock // kmp_critical_name *&<lock> - }; - auto &&CodeGen = [Privates, LHSExprs, RHSExprs, ReductionOps]( - CodeGenFunction &CGF, PrePostActionTy &Action) { - CGOpenMPRuntime &RT = CGF.CGM.getOpenMPRuntime(); - auto IPriv = Privates.begin(); - auto ILHS = LHSExprs.begin(); - auto IRHS = RHSExprs.begin(); - for (const Expr *E : ReductionOps) { - RT.emitSingleReductionCombiner(CGF, E, *IPriv, cast<DeclRefExpr>(*ILHS), - cast<DeclRefExpr>(*IRHS)); - ++IPriv; - ++ILHS; - ++IRHS; - } - }; - RegionCodeGenTy RCG(CodeGen); - CommonActionTy Action( - nullptr, llvm::None, - createRuntimeFunction(WithNowait ? OMPRTL__kmpc_end_reduce_nowait - : OMPRTL__kmpc_end_reduce), - EndArgs); - RCG.setAction(Action); - RCG(CGF); - - CGF.EmitBranch(DefaultBB); - - // 7. Build case 2: - // ... - // Atomic(<LHSExprs>[i] = RedOp<i>(*<LHSExprs>[i], *<RHSExprs>[i])); - // ... - // break; - llvm::BasicBlock *Case2BB = CGF.createBasicBlock(".omp.reduction.case2"); - SwInst->addCase(CGF.Builder.getInt32(2), Case2BB); - CGF.EmitBlock(Case2BB); - - auto &&AtomicCodeGen = [Loc, Privates, LHSExprs, RHSExprs, ReductionOps]( - CodeGenFunction &CGF, PrePostActionTy &Action) { - auto ILHS = LHSExprs.begin(); - auto IRHS = RHSExprs.begin(); - auto IPriv = Privates.begin(); - for (const Expr *E : ReductionOps) { - const Expr *XExpr = nullptr; - const Expr *EExpr = nullptr; - const Expr *UpExpr = nullptr; - BinaryOperatorKind BO = BO_Comma; - if (const auto *BO = dyn_cast<BinaryOperator>(E)) { - if (BO->getOpcode() == BO_Assign) { - XExpr = BO->getLHS(); - UpExpr = BO->getRHS(); - } - } - // Try to emit update expression as a simple atomic. - const Expr *RHSExpr = UpExpr; - if (RHSExpr) { - // Analyze RHS part of the whole expression. - if (const auto *ACO = dyn_cast<AbstractConditionalOperator>( - RHSExpr->IgnoreParenImpCasts())) { - // If this is a conditional operator, analyze its condition for - // min/max reduction operator. - RHSExpr = ACO->getCond(); - } - if (const auto *BORHS = - dyn_cast<BinaryOperator>(RHSExpr->IgnoreParenImpCasts())) { - EExpr = BORHS->getRHS(); - BO = BORHS->getOpcode(); - } - } - if (XExpr) { - const auto *VD = cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); - auto &&AtomicRedGen = [BO, VD, - Loc](CodeGenFunction &CGF, const Expr *XExpr, - const Expr *EExpr, const Expr *UpExpr) { - LValue X = CGF.EmitLValue(XExpr); - RValue E; - if (EExpr) - E = CGF.EmitAnyExpr(EExpr); - CGF.EmitOMPAtomicSimpleUpdateExpr( - X, E, BO, /*IsXLHSInRHSPart=*/true, - llvm::AtomicOrdering::Monotonic, Loc, - [&CGF, UpExpr, VD, Loc](RValue XRValue) { - CodeGenFunction::OMPPrivateScope PrivateScope(CGF); - PrivateScope.addPrivate( - VD, [&CGF, VD, XRValue, Loc]() { - Address LHSTemp = CGF.CreateMemTemp(VD->getType()); - CGF.emitOMPSimpleStore( - CGF.MakeAddrLValue(LHSTemp, VD->getType()), XRValue, - VD->getType().getNonReferenceType(), Loc); - return LHSTemp; - }); - (void)PrivateScope.Privatize(); - return CGF.EmitAnyExpr(UpExpr); - }); - }; - if ((*IPriv)->getType()->isArrayType()) { - // Emit atomic reduction for array section. - const auto *RHSVar = - cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); - EmitOMPAggregateReduction(CGF, (*IPriv)->getType(), VD, RHSVar, - AtomicRedGen, XExpr, EExpr, UpExpr); - } else { - // Emit atomic reduction for array subscript or single variable. - AtomicRedGen(CGF, XExpr, EExpr, UpExpr); - } - } else { - // Emit as a critical region. - auto &&CritRedGen = [E, Loc](CodeGenFunction &CGF, const Expr *, - const Expr *, const Expr *) { - CGOpenMPRuntime &RT = CGF.CGM.getOpenMPRuntime(); - std::string Name = RT.getName({"atomic_reduction"}); - RT.emitCriticalRegion( - CGF, Name, - [=](CodeGenFunction &CGF, PrePostActionTy &Action) { - Action.Enter(CGF); - emitReductionCombiner(CGF, E); - }, - Loc); - }; - if ((*IPriv)->getType()->isArrayType()) { - const auto *LHSVar = - cast<VarDecl>(cast<DeclRefExpr>(*ILHS)->getDecl()); - const auto *RHSVar = - cast<VarDecl>(cast<DeclRefExpr>(*IRHS)->getDecl()); - EmitOMPAggregateReduction(CGF, (*IPriv)->getType(), LHSVar, RHSVar, - CritRedGen); - } else { - CritRedGen(CGF, nullptr, nullptr, nullptr); - } - } - ++ILHS; - ++IRHS; - ++IPriv; - } - }; - RegionCodeGenTy AtomicRCG(AtomicCodeGen); - if (!WithNowait) { - // Add emission of __kmpc_end_reduce(<loc>, <gtid>, &<lock>); - llvm::Value *EndArgs[] = { - IdentTLoc, // ident_t *<loc> - ThreadId, // i32 <gtid> - Lock // kmp_critical_name *&<lock> - }; - CommonActionTy Action(nullptr, llvm::None, - createRuntimeFunction(OMPRTL__kmpc_end_reduce), - EndArgs); - AtomicRCG.setAction(Action); - AtomicRCG(CGF); - } else { - AtomicRCG(CGF); - } - - CGF.EmitBranch(DefaultBB); - CGF.EmitBlock(DefaultBB, /*IsFinished=*/true); -} - -/// Generates unique name for artificial threadprivate variables. -/// Format is: <Prefix> "." <Decl_mangled_name> "_" "<Decl_start_loc_raw_enc>" -static std::string generateUniqueName(CodeGenModule &CGM, StringRef Prefix, - const Expr *Ref) { - SmallString<256> Buffer; - llvm::raw_svector_ostream Out(Buffer); - const clang::DeclRefExpr *DE; - const VarDecl *D = ::getBaseDecl(Ref, DE); - if (!D) - D = cast<VarDecl>(cast<DeclRefExpr>(Ref)->getDecl()); - D = D->getCanonicalDecl(); - std::string Name = CGM.getOpenMPRuntime().getName( - {D->isLocalVarDeclOrParm() ? D->getName() : CGM.getMangledName(D)}); - Out << Prefix << Name << "_" - << D->getCanonicalDecl()->getBeginLoc().getRawEncoding(); - return Out.str(); -} - -/// Emits reduction initializer function: -/// \code -/// void @.red_init(void* %arg) { -/// %0 = bitcast void* %arg to <type>* -/// store <type> <init>, <type>* %0 -/// ret void -/// } -/// \endcode -static llvm::Value *emitReduceInitFunction(CodeGenModule &CGM, - SourceLocation Loc, - ReductionCodeGen &RCG, unsigned N) { - ASTContext &C = CGM.getContext(); - FunctionArgList Args; - ImplicitParamDecl Param(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - Args.emplace_back(&Param); - const auto &FnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *FnTy = CGM.getTypes().GetFunctionType(FnInfo); - std::string Name = CGM.getOpenMPRuntime().getName({"red_init", ""}); - auto *Fn = llvm::Function::Create(FnTy, llvm::GlobalValue::InternalLinkage, - Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, FnInfo); - Fn->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, FnInfo, Args, Loc, Loc); - Address PrivateAddr = CGF.EmitLoadOfPointer( - CGF.GetAddrOfLocalVar(&Param), - C.getPointerType(C.VoidPtrTy).castAs<PointerType>()); - llvm::Value *Size = nullptr; - // If the size of the reduction item is non-constant, load it from global - // threadprivate variable. - if (RCG.getSizes(N).second) { - Address SizeAddr = CGM.getOpenMPRuntime().getAddrOfArtificialThreadPrivate( - CGF, CGM.getContext().getSizeType(), - generateUniqueName(CGM, "reduction_size", RCG.getRefExpr(N))); - Size = CGF.EmitLoadOfScalar(SizeAddr, /*Volatile=*/false, - CGM.getContext().getSizeType(), Loc); - } - RCG.emitAggregateType(CGF, N, Size); - LValue SharedLVal; - // If initializer uses initializer from declare reduction construct, emit a - // pointer to the address of the original reduction item (reuired by reduction - // initializer) - if (RCG.usesReductionInitializer(N)) { - Address SharedAddr = - CGM.getOpenMPRuntime().getAddrOfArtificialThreadPrivate( - CGF, CGM.getContext().VoidPtrTy, - generateUniqueName(CGM, "reduction", RCG.getRefExpr(N))); - SharedAddr = CGF.EmitLoadOfPointer( - SharedAddr, - CGM.getContext().VoidPtrTy.castAs<PointerType>()->getTypePtr()); - SharedLVal = CGF.MakeAddrLValue(SharedAddr, CGM.getContext().VoidPtrTy); - } else { - SharedLVal = CGF.MakeNaturalAlignAddrLValue( - llvm::ConstantPointerNull::get(CGM.VoidPtrTy), - CGM.getContext().VoidPtrTy); - } - // Emit the initializer: - // %0 = bitcast void* %arg to <type>* - // store <type> <init>, <type>* %0 - RCG.emitInitialization(CGF, N, PrivateAddr, SharedLVal, - [](CodeGenFunction &) { return false; }); - CGF.FinishFunction(); - return Fn; -} - -/// Emits reduction combiner function: -/// \code -/// void @.red_comb(void* %arg0, void* %arg1) { -/// %lhs = bitcast void* %arg0 to <type>* -/// %rhs = bitcast void* %arg1 to <type>* -/// %2 = <ReductionOp>(<type>* %lhs, <type>* %rhs) -/// store <type> %2, <type>* %lhs -/// ret void -/// } -/// \endcode -static llvm::Value *emitReduceCombFunction(CodeGenModule &CGM, - SourceLocation Loc, - ReductionCodeGen &RCG, unsigned N, - const Expr *ReductionOp, - const Expr *LHS, const Expr *RHS, - const Expr *PrivateRef) { - ASTContext &C = CGM.getContext(); - const auto *LHSVD = cast<VarDecl>(cast<DeclRefExpr>(LHS)->getDecl()); - const auto *RHSVD = cast<VarDecl>(cast<DeclRefExpr>(RHS)->getDecl()); - FunctionArgList Args; - ImplicitParamDecl ParamInOut(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, - C.VoidPtrTy, ImplicitParamDecl::Other); - ImplicitParamDecl ParamIn(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - Args.emplace_back(&ParamInOut); - Args.emplace_back(&ParamIn); - const auto &FnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *FnTy = CGM.getTypes().GetFunctionType(FnInfo); - std::string Name = CGM.getOpenMPRuntime().getName({"red_comb", ""}); - auto *Fn = llvm::Function::Create(FnTy, llvm::GlobalValue::InternalLinkage, - Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, FnInfo); - Fn->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, FnInfo, Args, Loc, Loc); - llvm::Value *Size = nullptr; - // If the size of the reduction item is non-constant, load it from global - // threadprivate variable. - if (RCG.getSizes(N).second) { - Address SizeAddr = CGM.getOpenMPRuntime().getAddrOfArtificialThreadPrivate( - CGF, CGM.getContext().getSizeType(), - generateUniqueName(CGM, "reduction_size", RCG.getRefExpr(N))); - Size = CGF.EmitLoadOfScalar(SizeAddr, /*Volatile=*/false, - CGM.getContext().getSizeType(), Loc); - } - RCG.emitAggregateType(CGF, N, Size); - // Remap lhs and rhs variables to the addresses of the function arguments. - // %lhs = bitcast void* %arg0 to <type>* - // %rhs = bitcast void* %arg1 to <type>* - CodeGenFunction::OMPPrivateScope PrivateScope(CGF); - PrivateScope.addPrivate(LHSVD, [&C, &CGF, &ParamInOut, LHSVD]() { - // Pull out the pointer to the variable. - Address PtrAddr = CGF.EmitLoadOfPointer( - CGF.GetAddrOfLocalVar(&ParamInOut), - C.getPointerType(C.VoidPtrTy).castAs<PointerType>()); - return CGF.Builder.CreateElementBitCast( - PtrAddr, CGF.ConvertTypeForMem(LHSVD->getType())); - }); - PrivateScope.addPrivate(RHSVD, [&C, &CGF, &ParamIn, RHSVD]() { - // Pull out the pointer to the variable. - Address PtrAddr = CGF.EmitLoadOfPointer( - CGF.GetAddrOfLocalVar(&ParamIn), - C.getPointerType(C.VoidPtrTy).castAs<PointerType>()); - return CGF.Builder.CreateElementBitCast( - PtrAddr, CGF.ConvertTypeForMem(RHSVD->getType())); - }); - PrivateScope.Privatize(); - // Emit the combiner body: - // %2 = <ReductionOp>(<type> *%lhs, <type> *%rhs) - // store <type> %2, <type>* %lhs - CGM.getOpenMPRuntime().emitSingleReductionCombiner( - CGF, ReductionOp, PrivateRef, cast<DeclRefExpr>(LHS), - cast<DeclRefExpr>(RHS)); - CGF.FinishFunction(); - return Fn; -} - -/// Emits reduction finalizer function: -/// \code -/// void @.red_fini(void* %arg) { -/// %0 = bitcast void* %arg to <type>* -/// <destroy>(<type>* %0) -/// ret void -/// } -/// \endcode -static llvm::Value *emitReduceFiniFunction(CodeGenModule &CGM, - SourceLocation Loc, - ReductionCodeGen &RCG, unsigned N) { - if (!RCG.needCleanups(N)) - return nullptr; - ASTContext &C = CGM.getContext(); - FunctionArgList Args; - ImplicitParamDecl Param(C, /*DC=*/nullptr, Loc, /*Id=*/nullptr, C.VoidPtrTy, - ImplicitParamDecl::Other); - Args.emplace_back(&Param); - const auto &FnInfo = - CGM.getTypes().arrangeBuiltinFunctionDeclaration(C.VoidTy, Args); - llvm::FunctionType *FnTy = CGM.getTypes().GetFunctionType(FnInfo); - std::string Name = CGM.getOpenMPRuntime().getName({"red_fini", ""}); - auto *Fn = llvm::Function::Create(FnTy, llvm::GlobalValue::InternalLinkage, - Name, &CGM.getModule()); - CGM.SetInternalFunctionAttributes(GlobalDecl(), Fn, FnInfo); - Fn->setDoesNotRecurse(); - CodeGenFunction CGF(CGM); - CGF.StartFunction(GlobalDecl(), C.VoidTy, Fn, FnInfo, Args, Loc, Loc); - Address PrivateAddr = CGF.EmitLoadOfPointer( - CGF.GetAddrOfLocalVar(&Param), - C.getPointerType(C.VoidPtrTy).castAs<PointerType>()); - llvm::Value *Size = nullptr; - // If the size of the reduction item is non-constant, load it from global - // threadprivate variable. - if (RCG.getSizes(N).second) { - Address SizeAddr = CGM.getOpenMPRuntime().getAddrOfArtificialThreadPrivate( - CGF, CGM.getContext().getSizeType(), - generateUniqueName(CGM, "reduction_size", RCG.getRefExpr(N))); - Size = CGF.EmitLoadOfScalar(SizeAddr, /*Volatile=*/false, - CGM.getContext().getSizeType(), Loc); - } - RCG.emitAggregateType(CGF, N, Size); - // Emit the finalizer body: - // <destroy>(<type>* %0) - RCG.emitCleanups(CGF, N, PrivateAddr); - CGF.FinishFunction(); - return Fn; -} - -llvm::Value *CGOpenMPRuntime::emitTaskReductionInit( - CodeGenFunction &CGF, SourceLocation Loc, ArrayRef<const Expr *> LHSExprs, - ArrayRef<const Expr *> RHSExprs, const OMPTaskDataTy &Data) { - if (!CGF.HaveInsertPoint() || Data.ReductionVars.empty()) - return nullptr; - - // Build typedef struct: - // kmp_task_red_input { - // void *reduce_shar; // shared reduction item - // size_t reduce_size; // size of data item - // void *reduce_init; // data initialization routine - // void *reduce_fini; // data finalization routine - // void *reduce_comb; // data combiner routine - // kmp_task_red_flags_t flags; // flags for additional info from compiler - // } kmp_task_red_input_t; - ASTContext &C = CGM.getContext(); - RecordDecl *RD = C.buildImplicitRecord("kmp_task_red_input_t"); - RD->startDefinition(); - const FieldDecl *SharedFD = addFieldToRecordDecl(C, RD, C.VoidPtrTy); - const FieldDecl *SizeFD = addFieldToRecordDecl(C, RD, C.getSizeType()); - const FieldDecl *InitFD = addFieldToRecordDecl(C, RD, C.VoidPtrTy); - const FieldDecl *FiniFD = addFieldToRecordDecl(C, RD, C.VoidPtrTy); - const FieldDecl *CombFD = addFieldToRecordDecl(C, RD, C.VoidPtrTy); - const FieldDecl *FlagsFD = addFieldToRecordDecl( - C, RD, C.getIntTypeForBitwidth(/*DestWidth=*/32, /*Signed=*/false)); - RD->completeDefinition(); - QualType RDType = C.getRecordType(RD); - unsigned Size = Data.ReductionVars.size(); - llvm::APInt ArraySize(/*numBits=*/64, Size); - QualType ArrayRDType = C.getConstantArrayType( - RDType, ArraySize, ArrayType::Normal, /*IndexTypeQuals=*/0); - // kmp_task_red_input_t .rd_input.[Size]; - Address TaskRedInput = CGF.CreateMemTemp(ArrayRDType, ".rd_input."); - ReductionCodeGen RCG(Data.ReductionVars, Data.ReductionCopies, - Data.ReductionOps); - for (unsigned Cnt = 0; Cnt < Size; ++Cnt) { - // kmp_task_red_input_t &ElemLVal = .rd_input.[Cnt]; - llvm::Value *Idxs[] = {llvm::ConstantInt::get(CGM.SizeTy, /*V=*/0), - llvm::ConstantInt::get(CGM.SizeTy, Cnt)}; - llvm::Value *GEP = CGF.EmitCheckedInBoundsGEP( - TaskRedInput.getPointer(), Idxs, - /*SignedIndices=*/false, /*IsSubtraction=*/false, Loc, - ".rd_input.gep."); - LValue ElemLVal = CGF.MakeNaturalAlignAddrLValue(GEP, RDType); - // ElemLVal.reduce_shar = &Shareds[Cnt]; - LValue SharedLVal = CGF.EmitLValueForField(ElemLVal, SharedFD); - RCG.emitSharedLValue(CGF, Cnt); - llvm::Value *CastedShared = - CGF.EmitCastToVoidPtr(RCG.getSharedLValue(Cnt).getPointer()); - CGF.EmitStoreOfScalar(CastedShared, SharedLVal); - RCG.emitAggregateType(CGF, Cnt); - llvm::Value *SizeValInChars; - llvm::Value *SizeVal; - std::tie(SizeValInChars, SizeVal) = RCG.getSizes(Cnt); - // We use delayed creation/initialization for VLAs, array sections and - // custom reduction initializations. It is required because runtime does not - // provide the way to pass the sizes of VLAs/array sections to - // initializer/combiner/finalizer functions and does not pass the pointer to - // original reduction item to the initializer. Instead threadprivate global - // variables are used to store these values and use them in the functions. - bool DelayedCreation = !!SizeVal; - SizeValInChars = CGF.Builder.CreateIntCast(SizeValInChars, CGM.SizeTy, - /*isSigned=*/false); - LValue SizeLVal = CGF.EmitLValueForField(ElemLVal, SizeFD); - CGF.EmitStoreOfScalar(SizeValInChars, SizeLVal); - // ElemLVal.reduce_init = init; - LValue InitLVal = CGF.EmitLValueForField(ElemLVal, InitFD); - llvm::Value *InitAddr = - CGF.EmitCastToVoidPtr(emitReduceInitFunction(CGM, Loc, RCG, Cnt)); - CGF.EmitStoreOfScalar(InitAddr, InitLVal); - DelayedCreation = DelayedCreation || RCG.usesReductionInitializer(Cnt); - // ElemLVal.reduce_fini = fini; - LValue FiniLVal = CGF.EmitLValueForField(ElemLVal, FiniFD); - llvm::Value *Fini = emitReduceFiniFunction(CGM, Loc, RCG, Cnt); - llvm::Value *FiniAddr = Fini - ? CGF.EmitCastToVoidPtr(Fini) - : llvm::ConstantPointerNull::get(CGM.VoidPtrTy); - CGF.EmitStoreOfScalar(FiniAddr, FiniLVal); - // ElemLVal.reduce_comb = comb; - LValue CombLVal = CGF.EmitLValueForField(ElemLVal, CombFD); - llvm::Value *CombAddr = CGF.EmitCastToVoidPtr(emitReduceCombFunction( - CGM, Loc, RCG, Cnt, Data.ReductionOps[Cnt], LHSExprs[Cnt], - RHSExprs[Cnt], Data.ReductionCopies[Cnt])); - CGF.EmitStoreOfScalar(CombAddr, CombLVal); - // ElemLVal.flags = 0; - LValue FlagsLVal = CGF.EmitLValueForField(ElemLVal, FlagsFD); - if (DelayedCreation) { - CGF.EmitStoreOfScalar( - llvm::ConstantInt::get(CGM.Int32Ty, /*V=*/1, /*IsSigned=*/true), - FlagsLVal); - } else - CGF.EmitNullInitialization(FlagsLVal.getAddress(), FlagsLVal.getType()); - } - // Build call void *__kmpc_task_reduction_init(int gtid, int num_data, void - // *data); - llvm::Value *Args[] = { - CGF.Builder.CreateIntCast(getThreadID(CGF, Loc), CGM.IntTy, - /*isSigned=*/true), - llvm::ConstantInt::get(CGM.IntTy, Size, /*isSigned=*/true), - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(TaskRedInput.getPointer(), - CGM.VoidPtrTy)}; - return CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_task_reduction_init), Args); -} - -void CGOpenMPRuntime::emitTaskReductionFixups(CodeGenFunction &CGF, - SourceLocation Loc, - ReductionCodeGen &RCG, - unsigned N) { - auto Sizes = RCG.getSizes(N); - // Emit threadprivate global variable if the type is non-constant - // (Sizes.second = nullptr). - if (Sizes.second) { - llvm::Value *SizeVal = CGF.Builder.CreateIntCast(Sizes.second, CGM.SizeTy, - /*isSigned=*/false); - Address SizeAddr = getAddrOfArtificialThreadPrivate( - CGF, CGM.getContext().getSizeType(), - generateUniqueName(CGM, "reduction_size", RCG.getRefExpr(N))); - CGF.Builder.CreateStore(SizeVal, SizeAddr, /*IsVolatile=*/false); - } - // Store address of the original reduction item if custom initializer is used. - if (RCG.usesReductionInitializer(N)) { - Address SharedAddr = getAddrOfArtificialThreadPrivate( - CGF, CGM.getContext().VoidPtrTy, - generateUniqueName(CGM, "reduction", RCG.getRefExpr(N))); - CGF.Builder.CreateStore( - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - RCG.getSharedLValue(N).getPointer(), CGM.VoidPtrTy), - SharedAddr, /*IsVolatile=*/false); - } -} - -Address CGOpenMPRuntime::getTaskReductionItem(CodeGenFunction &CGF, - SourceLocation Loc, - llvm::Value *ReductionsPtr, - LValue SharedLVal) { - // Build call void *__kmpc_task_reduction_get_th_data(int gtid, void *tg, void - // *d); - llvm::Value *Args[] = { - CGF.Builder.CreateIntCast(getThreadID(CGF, Loc), CGM.IntTy, - /*isSigned=*/true), - ReductionsPtr, - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(SharedLVal.getPointer(), - CGM.VoidPtrTy)}; - return Address( - CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_task_reduction_get_th_data), Args), - SharedLVal.getAlignment()); -} - -void CGOpenMPRuntime::emitTaskwaitCall(CodeGenFunction &CGF, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - // Build call kmp_int32 __kmpc_omp_taskwait(ident_t *loc, kmp_int32 - // global_tid); - llvm::Value *Args[] = {emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc)}; - // Ignore return result until untied tasks are supported. - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_omp_taskwait), Args); - if (auto *Region = dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) - Region->emitUntiedSwitch(CGF); -} - -void CGOpenMPRuntime::emitInlinedDirective(CodeGenFunction &CGF, - OpenMPDirectiveKind InnerKind, - const RegionCodeGenTy &CodeGen, - bool HasCancel) { - if (!CGF.HaveInsertPoint()) - return; - InlinedOpenMPRegionRAII Region(CGF, CodeGen, InnerKind, HasCancel); - CGF.CapturedStmtInfo->EmitBody(CGF, /*S=*/nullptr); -} - -namespace { -enum RTCancelKind { - CancelNoreq = 0, - CancelParallel = 1, - CancelLoop = 2, - CancelSections = 3, - CancelTaskgroup = 4 -}; -} // anonymous namespace - -static RTCancelKind getCancellationKind(OpenMPDirectiveKind CancelRegion) { - RTCancelKind CancelKind = CancelNoreq; - if (CancelRegion == OMPD_parallel) - CancelKind = CancelParallel; - else if (CancelRegion == OMPD_for) - CancelKind = CancelLoop; - else if (CancelRegion == OMPD_sections) - CancelKind = CancelSections; - else { - assert(CancelRegion == OMPD_taskgroup); - CancelKind = CancelTaskgroup; - } - return CancelKind; -} - -void CGOpenMPRuntime::emitCancellationPointCall( - CodeGenFunction &CGF, SourceLocation Loc, - OpenMPDirectiveKind CancelRegion) { - if (!CGF.HaveInsertPoint()) - return; - // Build call kmp_int32 __kmpc_cancellationpoint(ident_t *loc, kmp_int32 - // global_tid, kmp_int32 cncl_kind); - if (auto *OMPRegionInfo = - dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { - // For 'cancellation point taskgroup', the task region info may not have a - // cancel. This may instead happen in another adjacent task. - if (CancelRegion == OMPD_taskgroup || OMPRegionInfo->hasCancel()) { - llvm::Value *Args[] = { - emitUpdateLocation(CGF, Loc), getThreadID(CGF, Loc), - CGF.Builder.getInt32(getCancellationKind(CancelRegion))}; - // Ignore return result until untied tasks are supported. - llvm::Value *Result = CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_cancellationpoint), Args); - // if (__kmpc_cancellationpoint()) { - // exit from construct; - // } - llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".cancel.exit"); - llvm::BasicBlock *ContBB = CGF.createBasicBlock(".cancel.continue"); - llvm::Value *Cmp = CGF.Builder.CreateIsNotNull(Result); - CGF.Builder.CreateCondBr(Cmp, ExitBB, ContBB); - CGF.EmitBlock(ExitBB); - // exit from construct; - CodeGenFunction::JumpDest CancelDest = - CGF.getOMPCancelDestination(OMPRegionInfo->getDirectiveKind()); - CGF.EmitBranchThroughCleanup(CancelDest); - CGF.EmitBlock(ContBB, /*IsFinished=*/true); - } - } -} - -void CGOpenMPRuntime::emitCancelCall(CodeGenFunction &CGF, SourceLocation Loc, - const Expr *IfCond, - OpenMPDirectiveKind CancelRegion) { - if (!CGF.HaveInsertPoint()) - return; - // Build call kmp_int32 __kmpc_cancel(ident_t *loc, kmp_int32 global_tid, - // kmp_int32 cncl_kind); - if (auto *OMPRegionInfo = - dyn_cast_or_null<CGOpenMPRegionInfo>(CGF.CapturedStmtInfo)) { - auto &&ThenGen = [Loc, CancelRegion, OMPRegionInfo](CodeGenFunction &CGF, - PrePostActionTy &) { - CGOpenMPRuntime &RT = CGF.CGM.getOpenMPRuntime(); - llvm::Value *Args[] = { - RT.emitUpdateLocation(CGF, Loc), RT.getThreadID(CGF, Loc), - CGF.Builder.getInt32(getCancellationKind(CancelRegion))}; - // Ignore return result until untied tasks are supported. - llvm::Value *Result = CGF.EmitRuntimeCall( - RT.createRuntimeFunction(OMPRTL__kmpc_cancel), Args); - // if (__kmpc_cancel()) { - // exit from construct; - // } - llvm::BasicBlock *ExitBB = CGF.createBasicBlock(".cancel.exit"); - llvm::BasicBlock *ContBB = CGF.createBasicBlock(".cancel.continue"); - llvm::Value *Cmp = CGF.Builder.CreateIsNotNull(Result); - CGF.Builder.CreateCondBr(Cmp, ExitBB, ContBB); - CGF.EmitBlock(ExitBB); - // exit from construct; - CodeGenFunction::JumpDest CancelDest = - CGF.getOMPCancelDestination(OMPRegionInfo->getDirectiveKind()); - CGF.EmitBranchThroughCleanup(CancelDest); - CGF.EmitBlock(ContBB, /*IsFinished=*/true); - }; - if (IfCond) { - emitOMPIfClause(CGF, IfCond, ThenGen, - [](CodeGenFunction &, PrePostActionTy &) {}); - } else { - RegionCodeGenTy ThenRCG(ThenGen); - ThenRCG(CGF); - } - } -} - -void CGOpenMPRuntime::emitTargetOutlinedFunction( - const OMPExecutableDirective &D, StringRef ParentName, - llvm::Function *&OutlinedFn, llvm::Constant *&OutlinedFnID, - bool IsOffloadEntry, const RegionCodeGenTy &CodeGen) { - assert(!ParentName.empty() && "Invalid target region parent name!"); - emitTargetOutlinedFunctionHelper(D, ParentName, OutlinedFn, OutlinedFnID, - IsOffloadEntry, CodeGen); -} - -void CGOpenMPRuntime::emitTargetOutlinedFunctionHelper( - const OMPExecutableDirective &D, StringRef ParentName, - llvm::Function *&OutlinedFn, llvm::Constant *&OutlinedFnID, - bool IsOffloadEntry, const RegionCodeGenTy &CodeGen) { - // Create a unique name for the entry function using the source location - // information of the current target region. The name will be something like: - // - // __omp_offloading_DD_FFFF_PP_lBB - // - // where DD_FFFF is an ID unique to the file (device and file IDs), PP is the - // mangled name of the function that encloses the target region and BB is the - // line number of the target region. - - unsigned DeviceID; - unsigned FileID; - unsigned Line; - getTargetEntryUniqueInfo(CGM.getContext(), D.getBeginLoc(), DeviceID, FileID, - Line); - SmallString<64> EntryFnName; - { - llvm::raw_svector_ostream OS(EntryFnName); - OS << "__omp_offloading" << llvm::format("_%x", DeviceID) - << llvm::format("_%x_", FileID) << ParentName << "_l" << Line; - } - - const CapturedStmt &CS = *D.getCapturedStmt(OMPD_target); - - CodeGenFunction CGF(CGM, true); - CGOpenMPTargetRegionInfo CGInfo(CS, CodeGen, EntryFnName); - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); - - OutlinedFn = CGF.GenerateOpenMPCapturedStmtFunction(CS); - - // If this target outline function is not an offload entry, we don't need to - // register it. - if (!IsOffloadEntry) - return; - - // The target region ID is used by the runtime library to identify the current - // target region, so it only has to be unique and not necessarily point to - // anything. It could be the pointer to the outlined function that implements - // the target region, but we aren't using that so that the compiler doesn't - // need to keep that, and could therefore inline the host function if proven - // worthwhile during optimization. In the other hand, if emitting code for the - // device, the ID has to be the function address so that it can retrieved from - // the offloading entry and launched by the runtime library. We also mark the - // outlined function to have external linkage in case we are emitting code for - // the device, because these functions will be entry points to the device. - - if (CGM.getLangOpts().OpenMPIsDevice) { - OutlinedFnID = llvm::ConstantExpr::getBitCast(OutlinedFn, CGM.Int8PtrTy); - OutlinedFn->setLinkage(llvm::GlobalValue::WeakAnyLinkage); - OutlinedFn->setDSOLocal(false); - } else { - std::string Name = getName({EntryFnName, "region_id"}); - OutlinedFnID = new llvm::GlobalVariable( - CGM.getModule(), CGM.Int8Ty, /*isConstant=*/true, - llvm::GlobalValue::WeakAnyLinkage, - llvm::Constant::getNullValue(CGM.Int8Ty), Name); - } - - // Register the information for the entry associated with this target region. - OffloadEntriesInfoManager.registerTargetRegionEntryInfo( - DeviceID, FileID, ParentName, Line, OutlinedFn, OutlinedFnID, - OffloadEntriesInfoManagerTy::OMPTargetRegionEntryTargetRegion); -} - -/// discard all CompoundStmts intervening between two constructs -static const Stmt *ignoreCompoundStmts(const Stmt *Body) { - while (const auto *CS = dyn_cast_or_null<CompoundStmt>(Body)) - Body = CS->body_front(); - - return Body; -} - -/// Emit the number of teams for a target directive. Inspect the num_teams -/// clause associated with a teams construct combined or closely nested -/// with the target directive. -/// -/// Emit a team of size one for directives such as 'target parallel' that -/// have no associated teams construct. -/// -/// Otherwise, return nullptr. -static llvm::Value * -emitNumTeamsForTargetDirective(CGOpenMPRuntime &OMPRuntime, - CodeGenFunction &CGF, - const OMPExecutableDirective &D) { - assert(!CGF.getLangOpts().OpenMPIsDevice && "Clauses associated with the " - "teams directive expected to be " - "emitted only for the host!"); - - CGBuilderTy &Bld = CGF.Builder; - - // If the target directive is combined with a teams directive: - // Return the value in the num_teams clause, if any. - // Otherwise, return 0 to denote the runtime default. - if (isOpenMPTeamsDirective(D.getDirectiveKind())) { - if (const auto *NumTeamsClause = D.getSingleClause<OMPNumTeamsClause>()) { - CodeGenFunction::RunCleanupsScope NumTeamsScope(CGF); - llvm::Value *NumTeams = CGF.EmitScalarExpr(NumTeamsClause->getNumTeams(), - /*IgnoreResultAssign*/ true); - return Bld.CreateIntCast(NumTeams, CGF.Int32Ty, - /*IsSigned=*/true); - } - - // The default value is 0. - return Bld.getInt32(0); - } - - // If the target directive is combined with a parallel directive but not a - // teams directive, start one team. - if (isOpenMPParallelDirective(D.getDirectiveKind())) - return Bld.getInt32(1); - - // If the current target region has a teams region enclosed, we need to get - // the number of teams to pass to the runtime function call. This is done - // by generating the expression in a inlined region. This is required because - // the expression is captured in the enclosing target environment when the - // teams directive is not combined with target. - - const CapturedStmt &CS = *D.getCapturedStmt(OMPD_target); - - if (const auto *TeamsDir = dyn_cast_or_null<OMPExecutableDirective>( - ignoreCompoundStmts(CS.getCapturedStmt()))) { - if (isOpenMPTeamsDirective(TeamsDir->getDirectiveKind())) { - if (const auto *NTE = TeamsDir->getSingleClause<OMPNumTeamsClause>()) { - CGOpenMPInnerExprInfo CGInfo(CGF, CS); - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); - llvm::Value *NumTeams = CGF.EmitScalarExpr(NTE->getNumTeams()); - return Bld.CreateIntCast(NumTeams, CGF.Int32Ty, - /*IsSigned=*/true); - } - - // If we have an enclosed teams directive but no num_teams clause we use - // the default value 0. - return Bld.getInt32(0); - } - } - - // No teams associated with the directive. - return nullptr; -} - -/// Emit the number of threads for a target directive. Inspect the -/// thread_limit clause associated with a teams construct combined or closely -/// nested with the target directive. -/// -/// Emit the num_threads clause for directives such as 'target parallel' that -/// have no associated teams construct. -/// -/// Otherwise, return nullptr. -static llvm::Value * -emitNumThreadsForTargetDirective(CGOpenMPRuntime &OMPRuntime, - CodeGenFunction &CGF, - const OMPExecutableDirective &D) { - assert(!CGF.getLangOpts().OpenMPIsDevice && "Clauses associated with the " - "teams directive expected to be " - "emitted only for the host!"); - - CGBuilderTy &Bld = CGF.Builder; - - // - // If the target directive is combined with a teams directive: - // Return the value in the thread_limit clause, if any. - // - // If the target directive is combined with a parallel directive: - // Return the value in the num_threads clause, if any. - // - // If both clauses are set, select the minimum of the two. - // - // If neither teams or parallel combined directives set the number of threads - // in a team, return 0 to denote the runtime default. - // - // If this is not a teams directive return nullptr. - - if (isOpenMPTeamsDirective(D.getDirectiveKind()) || - isOpenMPParallelDirective(D.getDirectiveKind())) { - llvm::Value *DefaultThreadLimitVal = Bld.getInt32(0); - llvm::Value *NumThreadsVal = nullptr; - llvm::Value *ThreadLimitVal = nullptr; - - if (const auto *ThreadLimitClause = - D.getSingleClause<OMPThreadLimitClause>()) { - CodeGenFunction::RunCleanupsScope ThreadLimitScope(CGF); - llvm::Value *ThreadLimit = - CGF.EmitScalarExpr(ThreadLimitClause->getThreadLimit(), - /*IgnoreResultAssign*/ true); - ThreadLimitVal = Bld.CreateIntCast(ThreadLimit, CGF.Int32Ty, - /*IsSigned=*/true); - } - - if (const auto *NumThreadsClause = - D.getSingleClause<OMPNumThreadsClause>()) { - CodeGenFunction::RunCleanupsScope NumThreadsScope(CGF); - llvm::Value *NumThreads = - CGF.EmitScalarExpr(NumThreadsClause->getNumThreads(), - /*IgnoreResultAssign*/ true); - NumThreadsVal = - Bld.CreateIntCast(NumThreads, CGF.Int32Ty, /*IsSigned=*/true); - } - - // Select the lesser of thread_limit and num_threads. - if (NumThreadsVal) - ThreadLimitVal = ThreadLimitVal - ? Bld.CreateSelect(Bld.CreateICmpSLT(NumThreadsVal, - ThreadLimitVal), - NumThreadsVal, ThreadLimitVal) - : NumThreadsVal; - - // Set default value passed to the runtime if either teams or a target - // parallel type directive is found but no clause is specified. - if (!ThreadLimitVal) - ThreadLimitVal = DefaultThreadLimitVal; - - return ThreadLimitVal; - } - - // If the current target region has a teams region enclosed, we need to get - // the thread limit to pass to the runtime function call. This is done - // by generating the expression in a inlined region. This is required because - // the expression is captured in the enclosing target environment when the - // teams directive is not combined with target. - - const CapturedStmt &CS = *D.getCapturedStmt(OMPD_target); - - if (const auto *TeamsDir = dyn_cast_or_null<OMPExecutableDirective>( - ignoreCompoundStmts(CS.getCapturedStmt()))) { - if (isOpenMPTeamsDirective(TeamsDir->getDirectiveKind())) { - if (const auto *TLE = TeamsDir->getSingleClause<OMPThreadLimitClause>()) { - CGOpenMPInnerExprInfo CGInfo(CGF, CS); - CodeGenFunction::CGCapturedStmtRAII CapInfoRAII(CGF, &CGInfo); - llvm::Value *ThreadLimit = CGF.EmitScalarExpr(TLE->getThreadLimit()); - return CGF.Builder.CreateIntCast(ThreadLimit, CGF.Int32Ty, - /*IsSigned=*/true); - } - - // If we have an enclosed teams directive but no thread_limit clause we - // use the default value 0. - return CGF.Builder.getInt32(0); - } - } - - // No teams associated with the directive. - return nullptr; -} - -namespace { -LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE(); - -// Utility to handle information from clauses associated with a given -// construct that use mappable expressions (e.g. 'map' clause, 'to' clause). -// It provides a convenient interface to obtain the information and generate -// code for that information. -class MappableExprsHandler { -public: - /// Values for bit flags used to specify the mapping type for - /// offloading. - enum OpenMPOffloadMappingFlags : uint64_t { - /// No flags - OMP_MAP_NONE = 0x0, - /// Allocate memory on the device and move data from host to device. - OMP_MAP_TO = 0x01, - /// Allocate memory on the device and move data from device to host. - OMP_MAP_FROM = 0x02, - /// Always perform the requested mapping action on the element, even - /// if it was already mapped before. - OMP_MAP_ALWAYS = 0x04, - /// Delete the element from the device environment, ignoring the - /// current reference count associated with the element. - OMP_MAP_DELETE = 0x08, - /// The element being mapped is a pointer-pointee pair; both the - /// pointer and the pointee should be mapped. - OMP_MAP_PTR_AND_OBJ = 0x10, - /// This flags signals that the base address of an entry should be - /// passed to the target kernel as an argument. - OMP_MAP_TARGET_PARAM = 0x20, - /// Signal that the runtime library has to return the device pointer - /// in the current position for the data being mapped. Used when we have the - /// use_device_ptr clause. - OMP_MAP_RETURN_PARAM = 0x40, - /// This flag signals that the reference being passed is a pointer to - /// private data. - OMP_MAP_PRIVATE = 0x80, - /// Pass the element to the device by value. - OMP_MAP_LITERAL = 0x100, - /// Implicit map - OMP_MAP_IMPLICIT = 0x200, - /// The 16 MSBs of the flags indicate whether the entry is member of some - /// struct/class. - OMP_MAP_MEMBER_OF = 0xffff000000000000, - LLVM_MARK_AS_BITMASK_ENUM(/* LargestFlag = */ OMP_MAP_MEMBER_OF), - }; - - /// Class that associates information with a base pointer to be passed to the - /// runtime library. - class BasePointerInfo { - /// The base pointer. - llvm::Value *Ptr = nullptr; - /// The base declaration that refers to this device pointer, or null if - /// there is none. - const ValueDecl *DevPtrDecl = nullptr; - - public: - BasePointerInfo(llvm::Value *Ptr, const ValueDecl *DevPtrDecl = nullptr) - : Ptr(Ptr), DevPtrDecl(DevPtrDecl) {} - llvm::Value *operator*() const { return Ptr; } - const ValueDecl *getDevicePtrDecl() const { return DevPtrDecl; } - void setDevicePtrDecl(const ValueDecl *D) { DevPtrDecl = D; } - }; - - using MapBaseValuesArrayTy = SmallVector<BasePointerInfo, 4>; - using MapValuesArrayTy = SmallVector<llvm::Value *, 4>; - using MapFlagsArrayTy = SmallVector<OpenMPOffloadMappingFlags, 4>; - - /// Map between a struct and the its lowest & highest elements which have been - /// mapped. - /// [ValueDecl *] --> {LE(FieldIndex, Pointer), - /// HE(FieldIndex, Pointer)} - struct StructRangeInfoTy { - std::pair<unsigned /*FieldIndex*/, Address /*Pointer*/> LowestElem = { - 0, Address::invalid()}; - std::pair<unsigned /*FieldIndex*/, Address /*Pointer*/> HighestElem = { - 0, Address::invalid()}; - Address Base = Address::invalid(); - }; - -private: - /// Kind that defines how a device pointer has to be returned. - struct MapInfo { - OMPClauseMappableExprCommon::MappableExprComponentListRef Components; - OpenMPMapClauseKind MapType = OMPC_MAP_unknown; - ArrayRef<OpenMPMapModifierKind> MapModifiers; - bool ReturnDevicePointer = false; - bool IsImplicit = false; - - MapInfo() = default; - MapInfo( - OMPClauseMappableExprCommon::MappableExprComponentListRef Components, - OpenMPMapClauseKind MapType, - ArrayRef<OpenMPMapModifierKind> MapModifiers, - bool ReturnDevicePointer, bool IsImplicit) - : Components(Components), MapType(MapType), MapModifiers(MapModifiers), - ReturnDevicePointer(ReturnDevicePointer), IsImplicit(IsImplicit) {} - }; - - /// If use_device_ptr is used on a pointer which is a struct member and there - /// is no map information about it, then emission of that entry is deferred - /// until the whole struct has been processed. - struct DeferredDevicePtrEntryTy { - const Expr *IE = nullptr; - const ValueDecl *VD = nullptr; - - DeferredDevicePtrEntryTy(const Expr *IE, const ValueDecl *VD) - : IE(IE), VD(VD) {} - }; - - /// Directive from where the map clauses were extracted. - const OMPExecutableDirective &CurDir; - - /// Function the directive is being generated for. - CodeGenFunction &CGF; - - /// Set of all first private variables in the current directive. - llvm::SmallPtrSet<const VarDecl *, 8> FirstPrivateDecls; - - /// Map between device pointer declarations and their expression components. - /// The key value for declarations in 'this' is null. - llvm::DenseMap< - const ValueDecl *, - SmallVector<OMPClauseMappableExprCommon::MappableExprComponentListRef, 4>> - DevPointersMap; - - llvm::Value *getExprTypeSize(const Expr *E) const { - QualType ExprTy = E->getType().getCanonicalType(); - - // Reference types are ignored for mapping purposes. - if (const auto *RefTy = ExprTy->getAs<ReferenceType>()) - ExprTy = RefTy->getPointeeType().getCanonicalType(); - - // Given that an array section is considered a built-in type, we need to - // do the calculation based on the length of the section instead of relying - // on CGF.getTypeSize(E->getType()). - if (const auto *OAE = dyn_cast<OMPArraySectionExpr>(E)) { - QualType BaseTy = OMPArraySectionExpr::getBaseOriginalType( - OAE->getBase()->IgnoreParenImpCasts()) - .getCanonicalType(); - - // If there is no length associated with the expression, that means we - // are using the whole length of the base. - if (!OAE->getLength() && OAE->getColonLoc().isValid()) - return CGF.getTypeSize(BaseTy); - - llvm::Value *ElemSize; - if (const auto *PTy = BaseTy->getAs<PointerType>()) { - ElemSize = CGF.getTypeSize(PTy->getPointeeType().getCanonicalType()); - } else { - const auto *ATy = cast<ArrayType>(BaseTy.getTypePtr()); - assert(ATy && "Expecting array type if not a pointer type."); - ElemSize = CGF.getTypeSize(ATy->getElementType().getCanonicalType()); - } - - // If we don't have a length at this point, that is because we have an - // array section with a single element. - if (!OAE->getLength()) - return ElemSize; - - llvm::Value *LengthVal = CGF.EmitScalarExpr(OAE->getLength()); - LengthVal = - CGF.Builder.CreateIntCast(LengthVal, CGF.SizeTy, /*isSigned=*/false); - return CGF.Builder.CreateNUWMul(LengthVal, ElemSize); - } - return CGF.getTypeSize(ExprTy); - } - - /// Return the corresponding bits for a given map clause modifier. Add - /// a flag marking the map as a pointer if requested. Add a flag marking the - /// map as the first one of a series of maps that relate to the same map - /// expression. - OpenMPOffloadMappingFlags getMapTypeBits( - OpenMPMapClauseKind MapType, ArrayRef<OpenMPMapModifierKind> MapModifiers, - bool IsImplicit, bool AddPtrFlag, bool AddIsTargetParamFlag) const { - OpenMPOffloadMappingFlags Bits = - IsImplicit ? OMP_MAP_IMPLICIT : OMP_MAP_NONE; - switch (MapType) { - case OMPC_MAP_alloc: - case OMPC_MAP_release: - // alloc and release is the default behavior in the runtime library, i.e. - // if we don't pass any bits alloc/release that is what the runtime is - // going to do. Therefore, we don't need to signal anything for these two - // type modifiers. - break; - case OMPC_MAP_to: - Bits |= OMP_MAP_TO; - break; - case OMPC_MAP_from: - Bits |= OMP_MAP_FROM; - break; - case OMPC_MAP_tofrom: - Bits |= OMP_MAP_TO | OMP_MAP_FROM; - break; - case OMPC_MAP_delete: - Bits |= OMP_MAP_DELETE; - break; - case OMPC_MAP_unknown: - llvm_unreachable("Unexpected map type!"); - } - if (AddPtrFlag) - Bits |= OMP_MAP_PTR_AND_OBJ; - if (AddIsTargetParamFlag) - Bits |= OMP_MAP_TARGET_PARAM; - if (llvm::find(MapModifiers, OMPC_MAP_MODIFIER_always) - != MapModifiers.end()) - Bits |= OMP_MAP_ALWAYS; - return Bits; - } - - /// Return true if the provided expression is a final array section. A - /// final array section, is one whose length can't be proved to be one. - bool isFinalArraySectionExpression(const Expr *E) const { - const auto *OASE = dyn_cast<OMPArraySectionExpr>(E); - - // It is not an array section and therefore not a unity-size one. - if (!OASE) - return false; - - // An array section with no colon always refer to a single element. - if (OASE->getColonLoc().isInvalid()) - return false; - - const Expr *Length = OASE->getLength(); - - // If we don't have a length we have to check if the array has size 1 - // for this dimension. Also, we should always expect a length if the - // base type is pointer. - if (!Length) { - QualType BaseQTy = OMPArraySectionExpr::getBaseOriginalType( - OASE->getBase()->IgnoreParenImpCasts()) - .getCanonicalType(); - if (const auto *ATy = dyn_cast<ConstantArrayType>(BaseQTy.getTypePtr())) - return ATy->getSize().getSExtValue() != 1; - // If we don't have a constant dimension length, we have to consider - // the current section as having any size, so it is not necessarily - // unitary. If it happen to be unity size, that's user fault. - return true; - } - - // Check if the length evaluates to 1. - Expr::EvalResult Result; - if (!Length->EvaluateAsInt(Result, CGF.getContext())) - return true; // Can have more that size 1. - - llvm::APSInt ConstLength = Result.Val.getInt(); - return ConstLength.getSExtValue() != 1; - } - - /// Generate the base pointers, section pointers, sizes and map type - /// bits for the provided map type, map modifier, and expression components. - /// \a IsFirstComponent should be set to true if the provided set of - /// components is the first associated with a capture. - void generateInfoForComponentList( - OpenMPMapClauseKind MapType, - ArrayRef<OpenMPMapModifierKind> MapModifiers, - OMPClauseMappableExprCommon::MappableExprComponentListRef Components, - MapBaseValuesArrayTy &BasePointers, MapValuesArrayTy &Pointers, - MapValuesArrayTy &Sizes, MapFlagsArrayTy &Types, - StructRangeInfoTy &PartialStruct, bool IsFirstComponentList, - bool IsImplicit, - ArrayRef<OMPClauseMappableExprCommon::MappableExprComponentListRef> - OverlappedElements = llvm::None) const { - // The following summarizes what has to be generated for each map and the - // types below. The generated information is expressed in this order: - // base pointer, section pointer, size, flags - // (to add to the ones that come from the map type and modifier). - // - // double d; - // int i[100]; - // float *p; - // - // struct S1 { - // int i; - // float f[50]; - // } - // struct S2 { - // int i; - // float f[50]; - // S1 s; - // double *p; - // struct S2 *ps; - // } - // S2 s; - // S2 *ps; - // - // map(d) - // &d, &d, sizeof(double), TARGET_PARAM | TO | FROM - // - // map(i) - // &i, &i, 100*sizeof(int), TARGET_PARAM | TO | FROM - // - // map(i[1:23]) - // &i(=&i[0]), &i[1], 23*sizeof(int), TARGET_PARAM | TO | FROM - // - // map(p) - // &p, &p, sizeof(float*), TARGET_PARAM | TO | FROM - // - // map(p[1:24]) - // p, &p[1], 24*sizeof(float), TARGET_PARAM | TO | FROM - // - // map(s) - // &s, &s, sizeof(S2), TARGET_PARAM | TO | FROM - // - // map(s.i) - // &s, &(s.i), sizeof(int), TARGET_PARAM | TO | FROM - // - // map(s.s.f) - // &s, &(s.s.f[0]), 50*sizeof(float), TARGET_PARAM | TO | FROM - // - // map(s.p) - // &s, &(s.p), sizeof(double*), TARGET_PARAM | TO | FROM - // - // map(to: s.p[:22]) - // &s, &(s.p), sizeof(double*), TARGET_PARAM (*) - // &s, &(s.p), sizeof(double*), MEMBER_OF(1) (**) - // &(s.p), &(s.p[0]), 22*sizeof(double), - // MEMBER_OF(1) | PTR_AND_OBJ | TO (***) - // (*) alloc space for struct members, only this is a target parameter - // (**) map the pointer (nothing to be mapped in this example) (the compiler - // optimizes this entry out, same in the examples below) - // (***) map the pointee (map: to) - // - // map(s.ps) - // &s, &(s.ps), sizeof(S2*), TARGET_PARAM | TO | FROM - // - // map(from: s.ps->s.i) - // &s, &(s.ps), sizeof(S2*), TARGET_PARAM - // &s, &(s.ps), sizeof(S2*), MEMBER_OF(1) - // &(s.ps), &(s.ps->s.i), sizeof(int), MEMBER_OF(1) | PTR_AND_OBJ | FROM - // - // map(to: s.ps->ps) - // &s, &(s.ps), sizeof(S2*), TARGET_PARAM - // &s, &(s.ps), sizeof(S2*), MEMBER_OF(1) - // &(s.ps), &(s.ps->ps), sizeof(S2*), MEMBER_OF(1) | PTR_AND_OBJ | TO - // - // map(s.ps->ps->ps) - // &s, &(s.ps), sizeof(S2*), TARGET_PARAM - // &s, &(s.ps), sizeof(S2*), MEMBER_OF(1) - // &(s.ps), &(s.ps->ps), sizeof(S2*), MEMBER_OF(1) | PTR_AND_OBJ - // &(s.ps->ps), &(s.ps->ps->ps), sizeof(S2*), PTR_AND_OBJ | TO | FROM - // - // map(to: s.ps->ps->s.f[:22]) - // &s, &(s.ps), sizeof(S2*), TARGET_PARAM - // &s, &(s.ps), sizeof(S2*), MEMBER_OF(1) - // &(s.ps), &(s.ps->ps), sizeof(S2*), MEMBER_OF(1) | PTR_AND_OBJ - // &(s.ps->ps), &(s.ps->ps->s.f[0]), 22*sizeof(float), PTR_AND_OBJ | TO - // - // map(ps) - // &ps, &ps, sizeof(S2*), TARGET_PARAM | TO | FROM - // - // map(ps->i) - // ps, &(ps->i), sizeof(int), TARGET_PARAM | TO | FROM - // - // map(ps->s.f) - // ps, &(ps->s.f[0]), 50*sizeof(float), TARGET_PARAM | TO | FROM - // - // map(from: ps->p) - // ps, &(ps->p), sizeof(double*), TARGET_PARAM | FROM - // - // map(to: ps->p[:22]) - // ps, &(ps->p), sizeof(double*), TARGET_PARAM - // ps, &(ps->p), sizeof(double*), MEMBER_OF(1) - // &(ps->p), &(ps->p[0]), 22*sizeof(double), MEMBER_OF(1) | PTR_AND_OBJ | TO - // - // map(ps->ps) - // ps, &(ps->ps), sizeof(S2*), TARGET_PARAM | TO | FROM - // - // map(from: ps->ps->s.i) - // ps, &(ps->ps), sizeof(S2*), TARGET_PARAM - // ps, &(ps->ps), sizeof(S2*), MEMBER_OF(1) - // &(ps->ps), &(ps->ps->s.i), sizeof(int), MEMBER_OF(1) | PTR_AND_OBJ | FROM - // - // map(from: ps->ps->ps) - // ps, &(ps->ps), sizeof(S2*), TARGET_PARAM - // ps, &(ps->ps), sizeof(S2*), MEMBER_OF(1) - // &(ps->ps), &(ps->ps->ps), sizeof(S2*), MEMBER_OF(1) | PTR_AND_OBJ | FROM - // - // map(ps->ps->ps->ps) - // ps, &(ps->ps), sizeof(S2*), TARGET_PARAM - // ps, &(ps->ps), sizeof(S2*), MEMBER_OF(1) - // &(ps->ps), &(ps->ps->ps), sizeof(S2*), MEMBER_OF(1) | PTR_AND_OBJ - // &(ps->ps->ps), &(ps->ps->ps->ps), sizeof(S2*), PTR_AND_OBJ | TO | FROM - // - // map(to: ps->ps->ps->s.f[:22]) - // ps, &(ps->ps), sizeof(S2*), TARGET_PARAM - // ps, &(ps->ps), sizeof(S2*), MEMBER_OF(1) - // &(ps->ps), &(ps->ps->ps), sizeof(S2*), MEMBER_OF(1) | PTR_AND_OBJ - // &(ps->ps->ps), &(ps->ps->ps->s.f[0]), 22*sizeof(float), PTR_AND_OBJ | TO - // - // map(to: s.f[:22]) map(from: s.p[:33]) - // &s, &(s.f[0]), 50*sizeof(float) + sizeof(struct S1) + - // sizeof(double*) (**), TARGET_PARAM - // &s, &(s.f[0]), 22*sizeof(float), MEMBER_OF(1) | TO - // &s, &(s.p), sizeof(double*), MEMBER_OF(1) - // &(s.p), &(s.p[0]), 33*sizeof(double), MEMBER_OF(1) | PTR_AND_OBJ | FROM - // (*) allocate contiguous space needed to fit all mapped members even if - // we allocate space for members not mapped (in this example, - // s.f[22..49] and s.s are not mapped, yet we must allocate space for - // them as well because they fall between &s.f[0] and &s.p) - // - // map(from: s.f[:22]) map(to: ps->p[:33]) - // &s, &(s.f[0]), 22*sizeof(float), TARGET_PARAM | FROM - // ps, &(ps->p), sizeof(S2*), TARGET_PARAM - // ps, &(ps->p), sizeof(double*), MEMBER_OF(2) (*) - // &(ps->p), &(ps->p[0]), 33*sizeof(double), MEMBER_OF(2) | PTR_AND_OBJ | TO - // (*) the struct this entry pertains to is the 2nd element in the list of - // arguments, hence MEMBER_OF(2) - // - // map(from: s.f[:22], s.s) map(to: ps->p[:33]) - // &s, &(s.f[0]), 50*sizeof(float) + sizeof(struct S1), TARGET_PARAM - // &s, &(s.f[0]), 22*sizeof(float), MEMBER_OF(1) | FROM - // &s, &(s.s), sizeof(struct S1), MEMBER_OF(1) | FROM - // ps, &(ps->p), sizeof(S2*), TARGET_PARAM - // ps, &(ps->p), sizeof(double*), MEMBER_OF(4) (*) - // &(ps->p), &(ps->p[0]), 33*sizeof(double), MEMBER_OF(4) | PTR_AND_OBJ | TO - // (*) the struct this entry pertains to is the 4th element in the list - // of arguments, hence MEMBER_OF(4) - - // Track if the map information being generated is the first for a capture. - bool IsCaptureFirstInfo = IsFirstComponentList; - bool IsLink = false; // Is this variable a "declare target link"? - - // Scan the components from the base to the complete expression. - auto CI = Components.rbegin(); - auto CE = Components.rend(); - auto I = CI; - - // Track if the map information being generated is the first for a list of - // components. - bool IsExpressionFirstInfo = true; - Address BP = Address::invalid(); - const Expr *AssocExpr = I->getAssociatedExpression(); - const auto *AE = dyn_cast<ArraySubscriptExpr>(AssocExpr); - const auto *OASE = dyn_cast<OMPArraySectionExpr>(AssocExpr); - - if (isa<MemberExpr>(AssocExpr)) { - // The base is the 'this' pointer. The content of the pointer is going - // to be the base of the field being mapped. - BP = CGF.LoadCXXThisAddress(); - } else if ((AE && isa<CXXThisExpr>(AE->getBase()->IgnoreParenImpCasts())) || - (OASE && - isa<CXXThisExpr>(OASE->getBase()->IgnoreParenImpCasts()))) { - BP = CGF.EmitOMPSharedLValue(AssocExpr).getAddress(); - } else { - // The base is the reference to the variable. - // BP = &Var. - BP = CGF.EmitOMPSharedLValue(AssocExpr).getAddress(); - if (const auto *VD = - dyn_cast_or_null<VarDecl>(I->getAssociatedDeclaration())) { - if (llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD)) - if (*Res == OMPDeclareTargetDeclAttr::MT_Link) { - IsLink = true; - BP = CGF.CGM.getOpenMPRuntime().getAddrOfDeclareTargetLink(VD); - } - } - - // If the variable is a pointer and is being dereferenced (i.e. is not - // the last component), the base has to be the pointer itself, not its - // reference. References are ignored for mapping purposes. - QualType Ty = - I->getAssociatedDeclaration()->getType().getNonReferenceType(); - if (Ty->isAnyPointerType() && std::next(I) != CE) { - BP = CGF.EmitLoadOfPointer(BP, Ty->castAs<PointerType>()); - - // We do not need to generate individual map information for the - // pointer, it can be associated with the combined storage. - ++I; - } - } - - // Track whether a component of the list should be marked as MEMBER_OF some - // combined entry (for partial structs). Only the first PTR_AND_OBJ entry - // in a component list should be marked as MEMBER_OF, all subsequent entries - // do not belong to the base struct. E.g. - // struct S2 s; - // s.ps->ps->ps->f[:] - // (1) (2) (3) (4) - // ps(1) is a member pointer, ps(2) is a pointee of ps(1), so it is a - // PTR_AND_OBJ entry; the PTR is ps(1), so MEMBER_OF the base struct. ps(3) - // is the pointee of ps(2) which is not member of struct s, so it should not - // be marked as such (it is still PTR_AND_OBJ). - // The variable is initialized to false so that PTR_AND_OBJ entries which - // are not struct members are not considered (e.g. array of pointers to - // data). - bool ShouldBeMemberOf = false; - - // Variable keeping track of whether or not we have encountered a component - // in the component list which is a member expression. Useful when we have a - // pointer or a final array section, in which case it is the previous - // component in the list which tells us whether we have a member expression. - // E.g. X.f[:] - // While processing the final array section "[:]" it is "f" which tells us - // whether we are dealing with a member of a declared struct. - const MemberExpr *EncounteredME = nullptr; - - for (; I != CE; ++I) { - // If the current component is member of a struct (parent struct) mark it. - if (!EncounteredME) { - EncounteredME = dyn_cast<MemberExpr>(I->getAssociatedExpression()); - // If we encounter a PTR_AND_OBJ entry from now on it should be marked - // as MEMBER_OF the parent struct. - if (EncounteredME) - ShouldBeMemberOf = true; - } - - auto Next = std::next(I); - - // We need to generate the addresses and sizes if this is the last - // component, if the component is a pointer or if it is an array section - // whose length can't be proved to be one. If this is a pointer, it - // becomes the base address for the following components. - - // A final array section, is one whose length can't be proved to be one. - bool IsFinalArraySection = - isFinalArraySectionExpression(I->getAssociatedExpression()); - - // Get information on whether the element is a pointer. Have to do a - // special treatment for array sections given that they are built-in - // types. - const auto *OASE = - dyn_cast<OMPArraySectionExpr>(I->getAssociatedExpression()); - bool IsPointer = - (OASE && OMPArraySectionExpr::getBaseOriginalType(OASE) - .getCanonicalType() - ->isAnyPointerType()) || - I->getAssociatedExpression()->getType()->isAnyPointerType(); - - if (Next == CE || IsPointer || IsFinalArraySection) { - // If this is not the last component, we expect the pointer to be - // associated with an array expression or member expression. - assert((Next == CE || - isa<MemberExpr>(Next->getAssociatedExpression()) || - isa<ArraySubscriptExpr>(Next->getAssociatedExpression()) || - isa<OMPArraySectionExpr>(Next->getAssociatedExpression())) && - "Unexpected expression"); - - Address LB = - CGF.EmitOMPSharedLValue(I->getAssociatedExpression()).getAddress(); - - // If this component is a pointer inside the base struct then we don't - // need to create any entry for it - it will be combined with the object - // it is pointing to into a single PTR_AND_OBJ entry. - bool IsMemberPointer = - IsPointer && EncounteredME && - (dyn_cast<MemberExpr>(I->getAssociatedExpression()) == - EncounteredME); - if (!OverlappedElements.empty()) { - // Handle base element with the info for overlapped elements. - assert(!PartialStruct.Base.isValid() && "The base element is set."); - assert(Next == CE && - "Expected last element for the overlapped elements."); - assert(!IsPointer && - "Unexpected base element with the pointer type."); - // Mark the whole struct as the struct that requires allocation on the - // device. - PartialStruct.LowestElem = {0, LB}; - CharUnits TypeSize = CGF.getContext().getTypeSizeInChars( - I->getAssociatedExpression()->getType()); - Address HB = CGF.Builder.CreateConstGEP( - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast(LB, - CGF.VoidPtrTy), - TypeSize.getQuantity() - 1, CharUnits::One()); - PartialStruct.HighestElem = { - std::numeric_limits<decltype( - PartialStruct.HighestElem.first)>::max(), - HB}; - PartialStruct.Base = BP; - // Emit data for non-overlapped data. - OpenMPOffloadMappingFlags Flags = - OMP_MAP_MEMBER_OF | - getMapTypeBits(MapType, MapModifiers, IsImplicit, - /*AddPtrFlag=*/false, - /*AddIsTargetParamFlag=*/false); - LB = BP; - llvm::Value *Size = nullptr; - // Do bitcopy of all non-overlapped structure elements. - for (OMPClauseMappableExprCommon::MappableExprComponentListRef - Component : OverlappedElements) { - Address ComponentLB = Address::invalid(); - for (const OMPClauseMappableExprCommon::MappableComponent &MC : - Component) { - if (MC.getAssociatedDeclaration()) { - ComponentLB = - CGF.EmitOMPSharedLValue(MC.getAssociatedExpression()) - .getAddress(); - Size = CGF.Builder.CreatePtrDiff( - CGF.EmitCastToVoidPtr(ComponentLB.getPointer()), - CGF.EmitCastToVoidPtr(LB.getPointer())); - break; - } - } - BasePointers.push_back(BP.getPointer()); - Pointers.push_back(LB.getPointer()); - Sizes.push_back(Size); - Types.push_back(Flags); - LB = CGF.Builder.CreateConstGEP(ComponentLB, 1, - CGF.getPointerSize()); - } - BasePointers.push_back(BP.getPointer()); - Pointers.push_back(LB.getPointer()); - Size = CGF.Builder.CreatePtrDiff( - CGF.EmitCastToVoidPtr( - CGF.Builder.CreateConstGEP(HB, 1, CharUnits::One()) - .getPointer()), - CGF.EmitCastToVoidPtr(LB.getPointer())); - Sizes.push_back(Size); - Types.push_back(Flags); - break; - } - llvm::Value *Size = getExprTypeSize(I->getAssociatedExpression()); - if (!IsMemberPointer) { - BasePointers.push_back(BP.getPointer()); - Pointers.push_back(LB.getPointer()); - Sizes.push_back(Size); - - // We need to add a pointer flag for each map that comes from the - // same expression except for the first one. We also need to signal - // this map is the first one that relates with the current capture - // (there is a set of entries for each capture). - OpenMPOffloadMappingFlags Flags = getMapTypeBits( - MapType, MapModifiers, IsImplicit, - !IsExpressionFirstInfo || IsLink, IsCaptureFirstInfo && !IsLink); - - if (!IsExpressionFirstInfo) { - // If we have a PTR_AND_OBJ pair where the OBJ is a pointer as well, - // then we reset the TO/FROM/ALWAYS/DELETE flags. - if (IsPointer) - Flags &= ~(OMP_MAP_TO | OMP_MAP_FROM | OMP_MAP_ALWAYS | - OMP_MAP_DELETE); - - if (ShouldBeMemberOf) { - // Set placeholder value MEMBER_OF=FFFF to indicate that the flag - // should be later updated with the correct value of MEMBER_OF. - Flags |= OMP_MAP_MEMBER_OF; - // From now on, all subsequent PTR_AND_OBJ entries should not be - // marked as MEMBER_OF. - ShouldBeMemberOf = false; - } - } - - Types.push_back(Flags); - } - - // If we have encountered a member expression so far, keep track of the - // mapped member. If the parent is "*this", then the value declaration - // is nullptr. - if (EncounteredME) { - const auto *FD = dyn_cast<FieldDecl>(EncounteredME->getMemberDecl()); - unsigned FieldIndex = FD->getFieldIndex(); - - // Update info about the lowest and highest elements for this struct - if (!PartialStruct.Base.isValid()) { - PartialStruct.LowestElem = {FieldIndex, LB}; - PartialStruct.HighestElem = {FieldIndex, LB}; - PartialStruct.Base = BP; - } else if (FieldIndex < PartialStruct.LowestElem.first) { - PartialStruct.LowestElem = {FieldIndex, LB}; - } else if (FieldIndex > PartialStruct.HighestElem.first) { - PartialStruct.HighestElem = {FieldIndex, LB}; - } - } - - // If we have a final array section, we are done with this expression. - if (IsFinalArraySection) - break; - - // The pointer becomes the base for the next element. - if (Next != CE) - BP = LB; - - IsExpressionFirstInfo = false; - IsCaptureFirstInfo = false; - } - } - } - - /// Return the adjusted map modifiers if the declaration a capture refers to - /// appears in a first-private clause. This is expected to be used only with - /// directives that start with 'target'. - MappableExprsHandler::OpenMPOffloadMappingFlags - getMapModifiersForPrivateClauses(const CapturedStmt::Capture &Cap) const { - assert(Cap.capturesVariable() && "Expected capture by reference only!"); - - // A first private variable captured by reference will use only the - // 'private ptr' and 'map to' flag. Return the right flags if the captured - // declaration is known as first-private in this handler. - if (FirstPrivateDecls.count(Cap.getCapturedVar())) - return MappableExprsHandler::OMP_MAP_PRIVATE | - MappableExprsHandler::OMP_MAP_TO; - return MappableExprsHandler::OMP_MAP_TO | - MappableExprsHandler::OMP_MAP_FROM; - } - - static OpenMPOffloadMappingFlags getMemberOfFlag(unsigned Position) { - // Member of is given by the 16 MSB of the flag, so rotate by 48 bits. - return static_cast<OpenMPOffloadMappingFlags>(((uint64_t)Position + 1) - << 48); - } - - static void setCorrectMemberOfFlag(OpenMPOffloadMappingFlags &Flags, - OpenMPOffloadMappingFlags MemberOfFlag) { - // If the entry is PTR_AND_OBJ but has not been marked with the special - // placeholder value 0xFFFF in the MEMBER_OF field, then it should not be - // marked as MEMBER_OF. - if ((Flags & OMP_MAP_PTR_AND_OBJ) && - ((Flags & OMP_MAP_MEMBER_OF) != OMP_MAP_MEMBER_OF)) - return; - - // Reset the placeholder value to prepare the flag for the assignment of the - // proper MEMBER_OF value. - Flags &= ~OMP_MAP_MEMBER_OF; - Flags |= MemberOfFlag; - } - - void getPlainLayout(const CXXRecordDecl *RD, - llvm::SmallVectorImpl<const FieldDecl *> &Layout, - bool AsBase) const { - const CGRecordLayout &RL = CGF.getTypes().getCGRecordLayout(RD); - - llvm::StructType *St = - AsBase ? RL.getBaseSubobjectLLVMType() : RL.getLLVMType(); - - unsigned NumElements = St->getNumElements(); - llvm::SmallVector< - llvm::PointerUnion<const CXXRecordDecl *, const FieldDecl *>, 4> - RecordLayout(NumElements); - - // Fill bases. - for (const auto &I : RD->bases()) { - if (I.isVirtual()) - continue; - const auto *Base = I.getType()->getAsCXXRecordDecl(); - // Ignore empty bases. - if (Base->isEmpty() || CGF.getContext() - .getASTRecordLayout(Base) - .getNonVirtualSize() - .isZero()) - continue; - - unsigned FieldIndex = RL.getNonVirtualBaseLLVMFieldNo(Base); - RecordLayout[FieldIndex] = Base; - } - // Fill in virtual bases. - for (const auto &I : RD->vbases()) { - const auto *Base = I.getType()->getAsCXXRecordDecl(); - // Ignore empty bases. - if (Base->isEmpty()) - continue; - unsigned FieldIndex = RL.getVirtualBaseIndex(Base); - if (RecordLayout[FieldIndex]) - continue; - RecordLayout[FieldIndex] = Base; - } - // Fill in all the fields. - assert(!RD->isUnion() && "Unexpected union."); - for (const auto *Field : RD->fields()) { - // Fill in non-bitfields. (Bitfields always use a zero pattern, which we - // will fill in later.) - if (!Field->isBitField()) { - unsigned FieldIndex = RL.getLLVMFieldNo(Field); - RecordLayout[FieldIndex] = Field; - } - } - for (const llvm::PointerUnion<const CXXRecordDecl *, const FieldDecl *> - &Data : RecordLayout) { - if (Data.isNull()) - continue; - if (const auto *Base = Data.dyn_cast<const CXXRecordDecl *>()) - getPlainLayout(Base, Layout, /*AsBase=*/true); - else - Layout.push_back(Data.get<const FieldDecl *>()); - } - } - -public: - MappableExprsHandler(const OMPExecutableDirective &Dir, CodeGenFunction &CGF) - : CurDir(Dir), CGF(CGF) { - // Extract firstprivate clause information. - for (const auto *C : Dir.getClausesOfKind<OMPFirstprivateClause>()) - for (const auto *D : C->varlists()) - FirstPrivateDecls.insert( - cast<VarDecl>(cast<DeclRefExpr>(D)->getDecl())->getCanonicalDecl()); - // Extract device pointer clause information. - for (const auto *C : Dir.getClausesOfKind<OMPIsDevicePtrClause>()) - for (auto L : C->component_lists()) - DevPointersMap[L.first].push_back(L.second); - } - - /// Generate code for the combined entry if we have a partially mapped struct - /// and take care of the mapping flags of the arguments corresponding to - /// individual struct members. - void emitCombinedEntry(MapBaseValuesArrayTy &BasePointers, - MapValuesArrayTy &Pointers, MapValuesArrayTy &Sizes, - MapFlagsArrayTy &Types, MapFlagsArrayTy &CurTypes, - const StructRangeInfoTy &PartialStruct) const { - // Base is the base of the struct - BasePointers.push_back(PartialStruct.Base.getPointer()); - // Pointer is the address of the lowest element - llvm::Value *LB = PartialStruct.LowestElem.second.getPointer(); - Pointers.push_back(LB); - // Size is (addr of {highest+1} element) - (addr of lowest element) - llvm::Value *HB = PartialStruct.HighestElem.second.getPointer(); - llvm::Value *HAddr = CGF.Builder.CreateConstGEP1_32(HB, /*Idx0=*/1); - llvm::Value *CLAddr = CGF.Builder.CreatePointerCast(LB, CGF.VoidPtrTy); - llvm::Value *CHAddr = CGF.Builder.CreatePointerCast(HAddr, CGF.VoidPtrTy); - llvm::Value *Diff = CGF.Builder.CreatePtrDiff(CHAddr, CLAddr); - llvm::Value *Size = CGF.Builder.CreateIntCast(Diff, CGF.SizeTy, - /*isSinged=*/false); - Sizes.push_back(Size); - // Map type is always TARGET_PARAM - Types.push_back(OMP_MAP_TARGET_PARAM); - // Remove TARGET_PARAM flag from the first element - (*CurTypes.begin()) &= ~OMP_MAP_TARGET_PARAM; - - // All other current entries will be MEMBER_OF the combined entry - // (except for PTR_AND_OBJ entries which do not have a placeholder value - // 0xFFFF in the MEMBER_OF field). - OpenMPOffloadMappingFlags MemberOfFlag = - getMemberOfFlag(BasePointers.size() - 1); - for (auto &M : CurTypes) - setCorrectMemberOfFlag(M, MemberOfFlag); - } - - /// Generate all the base pointers, section pointers, sizes and map - /// types for the extracted mappable expressions. Also, for each item that - /// relates with a device pointer, a pair of the relevant declaration and - /// index where it occurs is appended to the device pointers info array. - void generateAllInfo(MapBaseValuesArrayTy &BasePointers, - MapValuesArrayTy &Pointers, MapValuesArrayTy &Sizes, - MapFlagsArrayTy &Types) const { - // We have to process the component lists that relate with the same - // declaration in a single chunk so that we can generate the map flags - // correctly. Therefore, we organize all lists in a map. - llvm::MapVector<const ValueDecl *, SmallVector<MapInfo, 8>> Info; - - // Helper function to fill the information map for the different supported - // clauses. - auto &&InfoGen = [&Info]( - const ValueDecl *D, - OMPClauseMappableExprCommon::MappableExprComponentListRef L, - OpenMPMapClauseKind MapType, - ArrayRef<OpenMPMapModifierKind> MapModifiers, - bool ReturnDevicePointer, bool IsImplicit) { - const ValueDecl *VD = - D ? cast<ValueDecl>(D->getCanonicalDecl()) : nullptr; - Info[VD].emplace_back(L, MapType, MapModifiers, ReturnDevicePointer, - IsImplicit); - }; - - // FIXME: MSVC 2013 seems to require this-> to find member CurDir. - for (const auto *C : this->CurDir.getClausesOfKind<OMPMapClause>()) - for (const auto &L : C->component_lists()) { - InfoGen(L.first, L.second, C->getMapType(), C->getMapTypeModifiers(), - /*ReturnDevicePointer=*/false, C->isImplicit()); - } - for (const auto *C : this->CurDir.getClausesOfKind<OMPToClause>()) - for (const auto &L : C->component_lists()) { - InfoGen(L.first, L.second, OMPC_MAP_to, llvm::None, - /*ReturnDevicePointer=*/false, C->isImplicit()); - } - for (const auto *C : this->CurDir.getClausesOfKind<OMPFromClause>()) - for (const auto &L : C->component_lists()) { - InfoGen(L.first, L.second, OMPC_MAP_from, llvm::None, - /*ReturnDevicePointer=*/false, C->isImplicit()); - } - - // Look at the use_device_ptr clause information and mark the existing map - // entries as such. If there is no map information for an entry in the - // use_device_ptr list, we create one with map type 'alloc' and zero size - // section. It is the user fault if that was not mapped before. If there is - // no map information and the pointer is a struct member, then we defer the - // emission of that entry until the whole struct has been processed. - llvm::MapVector<const ValueDecl *, SmallVector<DeferredDevicePtrEntryTy, 4>> - DeferredInfo; - - // FIXME: MSVC 2013 seems to require this-> to find member CurDir. - for (const auto *C : - this->CurDir.getClausesOfKind<OMPUseDevicePtrClause>()) { - for (const auto &L : C->component_lists()) { - assert(!L.second.empty() && "Not expecting empty list of components!"); - const ValueDecl *VD = L.second.back().getAssociatedDeclaration(); - VD = cast<ValueDecl>(VD->getCanonicalDecl()); - const Expr *IE = L.second.back().getAssociatedExpression(); - // If the first component is a member expression, we have to look into - // 'this', which maps to null in the map of map information. Otherwise - // look directly for the information. - auto It = Info.find(isa<MemberExpr>(IE) ? nullptr : VD); - - // We potentially have map information for this declaration already. - // Look for the first set of components that refer to it. - if (It != Info.end()) { - auto CI = std::find_if( - It->second.begin(), It->second.end(), [VD](const MapInfo &MI) { - return MI.Components.back().getAssociatedDeclaration() == VD; - }); - // If we found a map entry, signal that the pointer has to be returned - // and move on to the next declaration. - if (CI != It->second.end()) { - CI->ReturnDevicePointer = true; - continue; - } - } - - // We didn't find any match in our map information - generate a zero - // size array section - if the pointer is a struct member we defer this - // action until the whole struct has been processed. - // FIXME: MSVC 2013 seems to require this-> to find member CGF. - if (isa<MemberExpr>(IE)) { - // Insert the pointer into Info to be processed by - // generateInfoForComponentList. Because it is a member pointer - // without a pointee, no entry will be generated for it, therefore - // we need to generate one after the whole struct has been processed. - // Nonetheless, generateInfoForComponentList must be called to take - // the pointer into account for the calculation of the range of the - // partial struct. - InfoGen(nullptr, L.second, OMPC_MAP_unknown, llvm::None, - /*ReturnDevicePointer=*/false, C->isImplicit()); - DeferredInfo[nullptr].emplace_back(IE, VD); - } else { - llvm::Value *Ptr = this->CGF.EmitLoadOfScalar( - this->CGF.EmitLValue(IE), IE->getExprLoc()); - BasePointers.emplace_back(Ptr, VD); - Pointers.push_back(Ptr); - Sizes.push_back(llvm::Constant::getNullValue(this->CGF.SizeTy)); - Types.push_back(OMP_MAP_RETURN_PARAM | OMP_MAP_TARGET_PARAM); - } - } - } - - for (const auto &M : Info) { - // We need to know when we generate information for the first component - // associated with a capture, because the mapping flags depend on it. - bool IsFirstComponentList = true; - - // Temporary versions of arrays - MapBaseValuesArrayTy CurBasePointers; - MapValuesArrayTy CurPointers; - MapValuesArrayTy CurSizes; - MapFlagsArrayTy CurTypes; - StructRangeInfoTy PartialStruct; - - for (const MapInfo &L : M.second) { - assert(!L.Components.empty() && - "Not expecting declaration with no component lists."); - - // Remember the current base pointer index. - unsigned CurrentBasePointersIdx = CurBasePointers.size(); - // FIXME: MSVC 2013 seems to require this-> to find the member method. - this->generateInfoForComponentList( - L.MapType, L.MapModifiers, L.Components, CurBasePointers, - CurPointers, CurSizes, CurTypes, PartialStruct, - IsFirstComponentList, L.IsImplicit); - - // If this entry relates with a device pointer, set the relevant - // declaration and add the 'return pointer' flag. - if (L.ReturnDevicePointer) { - assert(CurBasePointers.size() > CurrentBasePointersIdx && - "Unexpected number of mapped base pointers."); - - const ValueDecl *RelevantVD = - L.Components.back().getAssociatedDeclaration(); - assert(RelevantVD && - "No relevant declaration related with device pointer??"); - - CurBasePointers[CurrentBasePointersIdx].setDevicePtrDecl(RelevantVD); - CurTypes[CurrentBasePointersIdx] |= OMP_MAP_RETURN_PARAM; - } - IsFirstComponentList = false; - } - - // Append any pending zero-length pointers which are struct members and - // used with use_device_ptr. - auto CI = DeferredInfo.find(M.first); - if (CI != DeferredInfo.end()) { - for (const DeferredDevicePtrEntryTy &L : CI->second) { - llvm::Value *BasePtr = this->CGF.EmitLValue(L.IE).getPointer(); - llvm::Value *Ptr = this->CGF.EmitLoadOfScalar( - this->CGF.EmitLValue(L.IE), L.IE->getExprLoc()); - CurBasePointers.emplace_back(BasePtr, L.VD); - CurPointers.push_back(Ptr); - CurSizes.push_back(llvm::Constant::getNullValue(this->CGF.SizeTy)); - // Entry is PTR_AND_OBJ and RETURN_PARAM. Also, set the placeholder - // value MEMBER_OF=FFFF so that the entry is later updated with the - // correct value of MEMBER_OF. - CurTypes.push_back(OMP_MAP_PTR_AND_OBJ | OMP_MAP_RETURN_PARAM | - OMP_MAP_MEMBER_OF); - } - } - - // If there is an entry in PartialStruct it means we have a struct with - // individual members mapped. Emit an extra combined entry. - if (PartialStruct.Base.isValid()) - emitCombinedEntry(BasePointers, Pointers, Sizes, Types, CurTypes, - PartialStruct); - - // We need to append the results of this capture to what we already have. - BasePointers.append(CurBasePointers.begin(), CurBasePointers.end()); - Pointers.append(CurPointers.begin(), CurPointers.end()); - Sizes.append(CurSizes.begin(), CurSizes.end()); - Types.append(CurTypes.begin(), CurTypes.end()); - } - } - - /// Emit capture info for lambdas for variables captured by reference. - void generateInfoForLambdaCaptures( - const ValueDecl *VD, llvm::Value *Arg, MapBaseValuesArrayTy &BasePointers, - MapValuesArrayTy &Pointers, MapValuesArrayTy &Sizes, - MapFlagsArrayTy &Types, - llvm::DenseMap<llvm::Value *, llvm::Value *> &LambdaPointers) const { - const auto *RD = VD->getType() - .getCanonicalType() - .getNonReferenceType() - ->getAsCXXRecordDecl(); - if (!RD || !RD->isLambda()) - return; - Address VDAddr = Address(Arg, CGF.getContext().getDeclAlign(VD)); - LValue VDLVal = CGF.MakeAddrLValue( - VDAddr, VD->getType().getCanonicalType().getNonReferenceType()); - llvm::DenseMap<const VarDecl *, FieldDecl *> Captures; - FieldDecl *ThisCapture = nullptr; - RD->getCaptureFields(Captures, ThisCapture); - if (ThisCapture) { - LValue ThisLVal = - CGF.EmitLValueForFieldInitialization(VDLVal, ThisCapture); - LValue ThisLValVal = CGF.EmitLValueForField(VDLVal, ThisCapture); - LambdaPointers.try_emplace(ThisLVal.getPointer(), VDLVal.getPointer()); - BasePointers.push_back(ThisLVal.getPointer()); - Pointers.push_back(ThisLValVal.getPointer()); - Sizes.push_back(CGF.getTypeSize(CGF.getContext().VoidPtrTy)); - Types.push_back(OMP_MAP_PTR_AND_OBJ | OMP_MAP_LITERAL | - OMP_MAP_MEMBER_OF | OMP_MAP_IMPLICIT); - } - for (const LambdaCapture &LC : RD->captures()) { - if (LC.getCaptureKind() != LCK_ByRef) - continue; - const VarDecl *VD = LC.getCapturedVar(); - auto It = Captures.find(VD); - assert(It != Captures.end() && "Found lambda capture without field."); - LValue VarLVal = CGF.EmitLValueForFieldInitialization(VDLVal, It->second); - LValue VarLValVal = CGF.EmitLValueForField(VDLVal, It->second); - LambdaPointers.try_emplace(VarLVal.getPointer(), VDLVal.getPointer()); - BasePointers.push_back(VarLVal.getPointer()); - Pointers.push_back(VarLValVal.getPointer()); - Sizes.push_back(CGF.getTypeSize( - VD->getType().getCanonicalType().getNonReferenceType())); - Types.push_back(OMP_MAP_PTR_AND_OBJ | OMP_MAP_LITERAL | - OMP_MAP_MEMBER_OF | OMP_MAP_IMPLICIT); - } - } - - /// Set correct indices for lambdas captures. - void adjustMemberOfForLambdaCaptures( - const llvm::DenseMap<llvm::Value *, llvm::Value *> &LambdaPointers, - MapBaseValuesArrayTy &BasePointers, MapValuesArrayTy &Pointers, - MapFlagsArrayTy &Types) const { - for (unsigned I = 0, E = Types.size(); I < E; ++I) { - // Set correct member_of idx for all implicit lambda captures. - if (Types[I] != (OMP_MAP_PTR_AND_OBJ | OMP_MAP_LITERAL | - OMP_MAP_MEMBER_OF | OMP_MAP_IMPLICIT)) - continue; - llvm::Value *BasePtr = LambdaPointers.lookup(*BasePointers[I]); - assert(BasePtr && "Unable to find base lambda address."); - int TgtIdx = -1; - for (unsigned J = I; J > 0; --J) { - unsigned Idx = J - 1; - if (Pointers[Idx] != BasePtr) - continue; - TgtIdx = Idx; - break; - } - assert(TgtIdx != -1 && "Unable to find parent lambda."); - // All other current entries will be MEMBER_OF the combined entry - // (except for PTR_AND_OBJ entries which do not have a placeholder value - // 0xFFFF in the MEMBER_OF field). - OpenMPOffloadMappingFlags MemberOfFlag = getMemberOfFlag(TgtIdx); - setCorrectMemberOfFlag(Types[I], MemberOfFlag); - } - } - - /// Generate the base pointers, section pointers, sizes and map types - /// associated to a given capture. - void generateInfoForCapture(const CapturedStmt::Capture *Cap, - llvm::Value *Arg, - MapBaseValuesArrayTy &BasePointers, - MapValuesArrayTy &Pointers, - MapValuesArrayTy &Sizes, MapFlagsArrayTy &Types, - StructRangeInfoTy &PartialStruct) const { - assert(!Cap->capturesVariableArrayType() && - "Not expecting to generate map info for a variable array type!"); - - // We need to know when we generating information for the first component - const ValueDecl *VD = Cap->capturesThis() - ? nullptr - : Cap->getCapturedVar()->getCanonicalDecl(); - - // If this declaration appears in a is_device_ptr clause we just have to - // pass the pointer by value. If it is a reference to a declaration, we just - // pass its value. - if (DevPointersMap.count(VD)) { - BasePointers.emplace_back(Arg, VD); - Pointers.push_back(Arg); - Sizes.push_back(CGF.getTypeSize(CGF.getContext().VoidPtrTy)); - Types.push_back(OMP_MAP_LITERAL | OMP_MAP_TARGET_PARAM); - return; - } - - using MapData = - std::tuple<OMPClauseMappableExprCommon::MappableExprComponentListRef, - OpenMPMapClauseKind, ArrayRef<OpenMPMapModifierKind>, bool>; - SmallVector<MapData, 4> DeclComponentLists; - // FIXME: MSVC 2013 seems to require this-> to find member CurDir. - for (const auto *C : this->CurDir.getClausesOfKind<OMPMapClause>()) { - for (const auto &L : C->decl_component_lists(VD)) { - assert(L.first == VD && - "We got information for the wrong declaration??"); - assert(!L.second.empty() && - "Not expecting declaration with no component lists."); - DeclComponentLists.emplace_back(L.second, C->getMapType(), - C->getMapTypeModifiers(), - C->isImplicit()); - } - } - - // Find overlapping elements (including the offset from the base element). - llvm::SmallDenseMap< - const MapData *, - llvm::SmallVector< - OMPClauseMappableExprCommon::MappableExprComponentListRef, 4>, - 4> - OverlappedData; - size_t Count = 0; - for (const MapData &L : DeclComponentLists) { - OMPClauseMappableExprCommon::MappableExprComponentListRef Components; - OpenMPMapClauseKind MapType; - ArrayRef<OpenMPMapModifierKind> MapModifiers; - bool IsImplicit; - std::tie(Components, MapType, MapModifiers, IsImplicit) = L; - ++Count; - for (const MapData &L1 : makeArrayRef(DeclComponentLists).slice(Count)) { - OMPClauseMappableExprCommon::MappableExprComponentListRef Components1; - std::tie(Components1, MapType, MapModifiers, IsImplicit) = L1; - auto CI = Components.rbegin(); - auto CE = Components.rend(); - auto SI = Components1.rbegin(); - auto SE = Components1.rend(); - for (; CI != CE && SI != SE; ++CI, ++SI) { - if (CI->getAssociatedExpression()->getStmtClass() != - SI->getAssociatedExpression()->getStmtClass()) - break; - // Are we dealing with different variables/fields? - if (CI->getAssociatedDeclaration() != SI->getAssociatedDeclaration()) - break; - } - // Found overlapping if, at least for one component, reached the head of - // the components list. - if (CI == CE || SI == SE) { - assert((CI != CE || SI != SE) && - "Unexpected full match of the mapping components."); - const MapData &BaseData = CI == CE ? L : L1; - OMPClauseMappableExprCommon::MappableExprComponentListRef SubData = - SI == SE ? Components : Components1; - auto &OverlappedElements = OverlappedData.FindAndConstruct(&BaseData); - OverlappedElements.getSecond().push_back(SubData); - } - } - } - // Sort the overlapped elements for each item. - llvm::SmallVector<const FieldDecl *, 4> Layout; - if (!OverlappedData.empty()) { - if (const auto *CRD = - VD->getType().getCanonicalType()->getAsCXXRecordDecl()) - getPlainLayout(CRD, Layout, /*AsBase=*/false); - else { - const auto *RD = VD->getType().getCanonicalType()->getAsRecordDecl(); - Layout.append(RD->field_begin(), RD->field_end()); - } - } - for (auto &Pair : OverlappedData) { - llvm::sort( - Pair.getSecond(), - [&Layout]( - OMPClauseMappableExprCommon::MappableExprComponentListRef First, - OMPClauseMappableExprCommon::MappableExprComponentListRef - Second) { - auto CI = First.rbegin(); - auto CE = First.rend(); - auto SI = Second.rbegin(); - auto SE = Second.rend(); - for (; CI != CE && SI != SE; ++CI, ++SI) { - if (CI->getAssociatedExpression()->getStmtClass() != - SI->getAssociatedExpression()->getStmtClass()) - break; - // Are we dealing with different variables/fields? - if (CI->getAssociatedDeclaration() != - SI->getAssociatedDeclaration()) - break; - } - - // Lists contain the same elements. - if (CI == CE && SI == SE) - return false; - - // List with less elements is less than list with more elements. - if (CI == CE || SI == SE) - return CI == CE; - - const auto *FD1 = cast<FieldDecl>(CI->getAssociatedDeclaration()); - const auto *FD2 = cast<FieldDecl>(SI->getAssociatedDeclaration()); - if (FD1->getParent() == FD2->getParent()) - return FD1->getFieldIndex() < FD2->getFieldIndex(); - const auto It = - llvm::find_if(Layout, [FD1, FD2](const FieldDecl *FD) { - return FD == FD1 || FD == FD2; - }); - return *It == FD1; - }); - } - - // Associated with a capture, because the mapping flags depend on it. - // Go through all of the elements with the overlapped elements. - for (const auto &Pair : OverlappedData) { - const MapData &L = *Pair.getFirst(); - OMPClauseMappableExprCommon::MappableExprComponentListRef Components; - OpenMPMapClauseKind MapType; - ArrayRef<OpenMPMapModifierKind> MapModifiers; - bool IsImplicit; - std::tie(Components, MapType, MapModifiers, IsImplicit) = L; - ArrayRef<OMPClauseMappableExprCommon::MappableExprComponentListRef> - OverlappedComponents = Pair.getSecond(); - bool IsFirstComponentList = true; - generateInfoForComponentList(MapType, MapModifiers, Components, - BasePointers, Pointers, Sizes, Types, - PartialStruct, IsFirstComponentList, - IsImplicit, OverlappedComponents); - } - // Go through other elements without overlapped elements. - bool IsFirstComponentList = OverlappedData.empty(); - for (const MapData &L : DeclComponentLists) { - OMPClauseMappableExprCommon::MappableExprComponentListRef Components; - OpenMPMapClauseKind MapType; - ArrayRef<OpenMPMapModifierKind> MapModifiers; - bool IsImplicit; - std::tie(Components, MapType, MapModifiers, IsImplicit) = L; - auto It = OverlappedData.find(&L); - if (It == OverlappedData.end()) - generateInfoForComponentList(MapType, MapModifiers, Components, - BasePointers, Pointers, Sizes, Types, - PartialStruct, IsFirstComponentList, - IsImplicit); - IsFirstComponentList = false; - } - } - - /// Generate the base pointers, section pointers, sizes and map types - /// associated with the declare target link variables. - void generateInfoForDeclareTargetLink(MapBaseValuesArrayTy &BasePointers, - MapValuesArrayTy &Pointers, - MapValuesArrayTy &Sizes, - MapFlagsArrayTy &Types) const { - // Map other list items in the map clause which are not captured variables - // but "declare target link" global variables., - for (const auto *C : this->CurDir.getClausesOfKind<OMPMapClause>()) { - for (const auto &L : C->component_lists()) { - if (!L.first) - continue; - const auto *VD = dyn_cast<VarDecl>(L.first); - if (!VD) - continue; - llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD); - if (!Res || *Res != OMPDeclareTargetDeclAttr::MT_Link) - continue; - StructRangeInfoTy PartialStruct; - generateInfoForComponentList( - C->getMapType(), C->getMapTypeModifiers(), L.second, BasePointers, - Pointers, Sizes, Types, PartialStruct, - /*IsFirstComponentList=*/true, C->isImplicit()); - assert(!PartialStruct.Base.isValid() && - "No partial structs for declare target link expected."); - } - } - } - - /// Generate the default map information for a given capture \a CI, - /// record field declaration \a RI and captured value \a CV. - void generateDefaultMapInfo(const CapturedStmt::Capture &CI, - const FieldDecl &RI, llvm::Value *CV, - MapBaseValuesArrayTy &CurBasePointers, - MapValuesArrayTy &CurPointers, - MapValuesArrayTy &CurSizes, - MapFlagsArrayTy &CurMapTypes) const { - // Do the default mapping. - if (CI.capturesThis()) { - CurBasePointers.push_back(CV); - CurPointers.push_back(CV); - const auto *PtrTy = cast<PointerType>(RI.getType().getTypePtr()); - CurSizes.push_back(CGF.getTypeSize(PtrTy->getPointeeType())); - // Default map type. - CurMapTypes.push_back(OMP_MAP_TO | OMP_MAP_FROM); - } else if (CI.capturesVariableByCopy()) { - CurBasePointers.push_back(CV); - CurPointers.push_back(CV); - if (!RI.getType()->isAnyPointerType()) { - // We have to signal to the runtime captures passed by value that are - // not pointers. - CurMapTypes.push_back(OMP_MAP_LITERAL); - CurSizes.push_back(CGF.getTypeSize(RI.getType())); - } else { - // Pointers are implicitly mapped with a zero size and no flags - // (other than first map that is added for all implicit maps). - CurMapTypes.push_back(OMP_MAP_NONE); - CurSizes.push_back(llvm::Constant::getNullValue(CGF.SizeTy)); - } - } else { - assert(CI.capturesVariable() && "Expected captured reference."); - CurBasePointers.push_back(CV); - CurPointers.push_back(CV); - - const auto *PtrTy = cast<ReferenceType>(RI.getType().getTypePtr()); - QualType ElementType = PtrTy->getPointeeType(); - CurSizes.push_back(CGF.getTypeSize(ElementType)); - // The default map type for a scalar/complex type is 'to' because by - // default the value doesn't have to be retrieved. For an aggregate - // type, the default is 'tofrom'. - CurMapTypes.push_back(getMapModifiersForPrivateClauses(CI)); - } - // Every default map produces a single argument which is a target parameter. - CurMapTypes.back() |= OMP_MAP_TARGET_PARAM; - - // Add flag stating this is an implicit map. - CurMapTypes.back() |= OMP_MAP_IMPLICIT; - } -}; - -enum OpenMPOffloadingReservedDeviceIDs { - /// Device ID if the device was not defined, runtime should get it - /// from environment variables in the spec. - OMP_DEVICEID_UNDEF = -1, -}; -} // anonymous namespace - -/// Emit the arrays used to pass the captures and map information to the -/// offloading runtime library. If there is no map or capture information, -/// return nullptr by reference. -static void -emitOffloadingArrays(CodeGenFunction &CGF, - MappableExprsHandler::MapBaseValuesArrayTy &BasePointers, - MappableExprsHandler::MapValuesArrayTy &Pointers, - MappableExprsHandler::MapValuesArrayTy &Sizes, - MappableExprsHandler::MapFlagsArrayTy &MapTypes, - CGOpenMPRuntime::TargetDataInfo &Info) { - CodeGenModule &CGM = CGF.CGM; - ASTContext &Ctx = CGF.getContext(); - - // Reset the array information. - Info.clearArrayInfo(); - Info.NumberOfPtrs = BasePointers.size(); - - if (Info.NumberOfPtrs) { - // Detect if we have any capture size requiring runtime evaluation of the - // size so that a constant array could be eventually used. - bool hasRuntimeEvaluationCaptureSize = false; - for (llvm::Value *S : Sizes) - if (!isa<llvm::Constant>(S)) { - hasRuntimeEvaluationCaptureSize = true; - break; - } - - llvm::APInt PointerNumAP(32, Info.NumberOfPtrs, /*isSigned=*/true); - QualType PointerArrayType = - Ctx.getConstantArrayType(Ctx.VoidPtrTy, PointerNumAP, ArrayType::Normal, - /*IndexTypeQuals=*/0); - - Info.BasePointersArray = - CGF.CreateMemTemp(PointerArrayType, ".offload_baseptrs").getPointer(); - Info.PointersArray = - CGF.CreateMemTemp(PointerArrayType, ".offload_ptrs").getPointer(); - - // If we don't have any VLA types or other types that require runtime - // evaluation, we can use a constant array for the map sizes, otherwise we - // need to fill up the arrays as we do for the pointers. - if (hasRuntimeEvaluationCaptureSize) { - QualType SizeArrayType = Ctx.getConstantArrayType( - Ctx.getSizeType(), PointerNumAP, ArrayType::Normal, - /*IndexTypeQuals=*/0); - Info.SizesArray = - CGF.CreateMemTemp(SizeArrayType, ".offload_sizes").getPointer(); - } else { - // We expect all the sizes to be constant, so we collect them to create - // a constant array. - SmallVector<llvm::Constant *, 16> ConstSizes; - for (llvm::Value *S : Sizes) - ConstSizes.push_back(cast<llvm::Constant>(S)); - - auto *SizesArrayInit = llvm::ConstantArray::get( - llvm::ArrayType::get(CGM.SizeTy, ConstSizes.size()), ConstSizes); - std::string Name = CGM.getOpenMPRuntime().getName({"offload_sizes"}); - auto *SizesArrayGbl = new llvm::GlobalVariable( - CGM.getModule(), SizesArrayInit->getType(), - /*isConstant=*/true, llvm::GlobalValue::PrivateLinkage, - SizesArrayInit, Name); - SizesArrayGbl->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global); - Info.SizesArray = SizesArrayGbl; - } - - // The map types are always constant so we don't need to generate code to - // fill arrays. Instead, we create an array constant. - SmallVector<uint64_t, 4> Mapping(MapTypes.size(), 0); - llvm::copy(MapTypes, Mapping.begin()); - llvm::Constant *MapTypesArrayInit = - llvm::ConstantDataArray::get(CGF.Builder.getContext(), Mapping); - std::string MaptypesName = - CGM.getOpenMPRuntime().getName({"offload_maptypes"}); - auto *MapTypesArrayGbl = new llvm::GlobalVariable( - CGM.getModule(), MapTypesArrayInit->getType(), - /*isConstant=*/true, llvm::GlobalValue::PrivateLinkage, - MapTypesArrayInit, MaptypesName); - MapTypesArrayGbl->setUnnamedAddr(llvm::GlobalValue::UnnamedAddr::Global); - Info.MapTypesArray = MapTypesArrayGbl; - - for (unsigned I = 0; I < Info.NumberOfPtrs; ++I) { - llvm::Value *BPVal = *BasePointers[I]; - llvm::Value *BP = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.VoidPtrTy, Info.NumberOfPtrs), - Info.BasePointersArray, 0, I); - BP = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - BP, BPVal->getType()->getPointerTo(/*AddrSpace=*/0)); - Address BPAddr(BP, Ctx.getTypeAlignInChars(Ctx.VoidPtrTy)); - CGF.Builder.CreateStore(BPVal, BPAddr); - - if (Info.requiresDevicePointerInfo()) - if (const ValueDecl *DevVD = BasePointers[I].getDevicePtrDecl()) - Info.CaptureDeviceAddrMap.try_emplace(DevVD, BPAddr); - - llvm::Value *PVal = Pointers[I]; - llvm::Value *P = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.VoidPtrTy, Info.NumberOfPtrs), - Info.PointersArray, 0, I); - P = CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - P, PVal->getType()->getPointerTo(/*AddrSpace=*/0)); - Address PAddr(P, Ctx.getTypeAlignInChars(Ctx.VoidPtrTy)); - CGF.Builder.CreateStore(PVal, PAddr); - - if (hasRuntimeEvaluationCaptureSize) { - llvm::Value *S = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.SizeTy, Info.NumberOfPtrs), - Info.SizesArray, - /*Idx0=*/0, - /*Idx1=*/I); - Address SAddr(S, Ctx.getTypeAlignInChars(Ctx.getSizeType())); - CGF.Builder.CreateStore( - CGF.Builder.CreateIntCast(Sizes[I], CGM.SizeTy, /*isSigned=*/true), - SAddr); - } - } - } -} -/// Emit the arguments to be passed to the runtime library based on the -/// arrays of pointers, sizes and map types. -static void emitOffloadingArraysArgument( - CodeGenFunction &CGF, llvm::Value *&BasePointersArrayArg, - llvm::Value *&PointersArrayArg, llvm::Value *&SizesArrayArg, - llvm::Value *&MapTypesArrayArg, CGOpenMPRuntime::TargetDataInfo &Info) { - CodeGenModule &CGM = CGF.CGM; - if (Info.NumberOfPtrs) { - BasePointersArrayArg = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.VoidPtrTy, Info.NumberOfPtrs), - Info.BasePointersArray, - /*Idx0=*/0, /*Idx1=*/0); - PointersArrayArg = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.VoidPtrTy, Info.NumberOfPtrs), - Info.PointersArray, - /*Idx0=*/0, - /*Idx1=*/0); - SizesArrayArg = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.SizeTy, Info.NumberOfPtrs), Info.SizesArray, - /*Idx0=*/0, /*Idx1=*/0); - MapTypesArrayArg = CGF.Builder.CreateConstInBoundsGEP2_32( - llvm::ArrayType::get(CGM.Int64Ty, Info.NumberOfPtrs), - Info.MapTypesArray, - /*Idx0=*/0, - /*Idx1=*/0); - } else { - BasePointersArrayArg = llvm::ConstantPointerNull::get(CGM.VoidPtrPtrTy); - PointersArrayArg = llvm::ConstantPointerNull::get(CGM.VoidPtrPtrTy); - SizesArrayArg = llvm::ConstantPointerNull::get(CGM.SizeTy->getPointerTo()); - MapTypesArrayArg = - llvm::ConstantPointerNull::get(CGM.Int64Ty->getPointerTo()); - } -} - -/// Checks if the expression is constant or does not have non-trivial function -/// calls. -static bool isTrivial(ASTContext &Ctx, const Expr * E) { - // We can skip constant expressions. - // We can skip expressions with trivial calls or simple expressions. - return (E->isEvaluatable(Ctx, Expr::SE_AllowUndefinedBehavior) || - !E->hasNonTrivialCall(Ctx)) && - !E->HasSideEffects(Ctx, /*IncludePossibleEffects=*/true); -} - -/// Checks if the \p Body is the \a CompoundStmt and returns its child statement -/// iff there is only one that is not evaluatable at the compile time. -static const Stmt *getSingleCompoundChild(ASTContext &Ctx, const Stmt *Body) { - if (const auto *C = dyn_cast<CompoundStmt>(Body)) { - const Stmt *Child = nullptr; - for (const Stmt *S : C->body()) { - if (const auto *E = dyn_cast<Expr>(S)) { - if (isTrivial(Ctx, E)) - continue; - } - // Some of the statements can be ignored. - if (isa<AsmStmt>(S) || isa<NullStmt>(S) || isa<OMPFlushDirective>(S) || - isa<OMPBarrierDirective>(S) || isa<OMPTaskyieldDirective>(S)) - continue; - // Analyze declarations. - if (const auto *DS = dyn_cast<DeclStmt>(S)) { - if (llvm::all_of(DS->decls(), [&Ctx](const Decl *D) { - if (isa<EmptyDecl>(D) || isa<DeclContext>(D) || - isa<TypeDecl>(D) || isa<PragmaCommentDecl>(D) || - isa<PragmaDetectMismatchDecl>(D) || isa<UsingDecl>(D) || - isa<UsingDirectiveDecl>(D) || - isa<OMPDeclareReductionDecl>(D) || - isa<OMPThreadPrivateDecl>(D)) - return true; - const auto *VD = dyn_cast<VarDecl>(D); - if (!VD) - return false; - return VD->isConstexpr() || - ((VD->getType().isTrivialType(Ctx) || - VD->getType()->isReferenceType()) && - (!VD->hasInit() || isTrivial(Ctx, VD->getInit()))); - })) - continue; - } - // Found multiple children - cannot get the one child only. - if (Child) - return Body; - Child = S; - } - if (Child) - return Child; - } - return Body; -} - -/// Check for inner distribute directive. -static const OMPExecutableDirective * -getNestedDistributeDirective(ASTContext &Ctx, const OMPExecutableDirective &D) { - const auto *CS = D.getInnermostCapturedStmt(); - const auto *Body = - CS->getCapturedStmt()->IgnoreContainers(/*IgnoreCaptured=*/true); - const Stmt *ChildStmt = getSingleCompoundChild(Ctx, Body); - - if (const auto *NestedDir = dyn_cast<OMPExecutableDirective>(ChildStmt)) { - OpenMPDirectiveKind DKind = NestedDir->getDirectiveKind(); - switch (D.getDirectiveKind()) { - case OMPD_target: - if (isOpenMPDistributeDirective(DKind)) - return NestedDir; - if (DKind == OMPD_teams) { - Body = NestedDir->getInnermostCapturedStmt()->IgnoreContainers( - /*IgnoreCaptured=*/true); - if (!Body) - return nullptr; - ChildStmt = getSingleCompoundChild(Ctx, Body); - if (const auto *NND = dyn_cast<OMPExecutableDirective>(ChildStmt)) { - DKind = NND->getDirectiveKind(); - if (isOpenMPDistributeDirective(DKind)) - return NND; - } - } - return nullptr; - case OMPD_target_teams: - if (isOpenMPDistributeDirective(DKind)) - return NestedDir; - return nullptr; - case OMPD_target_parallel: - case OMPD_target_simd: - case OMPD_target_parallel_for: - case OMPD_target_parallel_for_simd: - return nullptr; - case OMPD_target_teams_distribute: - case OMPD_target_teams_distribute_simd: - case OMPD_target_teams_distribute_parallel_for: - case OMPD_target_teams_distribute_parallel_for_simd: - case OMPD_parallel: - case OMPD_for: - case OMPD_parallel_for: - case OMPD_parallel_sections: - case OMPD_for_simd: - case OMPD_parallel_for_simd: - case OMPD_cancel: - case OMPD_cancellation_point: - case OMPD_ordered: - case OMPD_threadprivate: - case OMPD_task: - case OMPD_simd: - case OMPD_sections: - case OMPD_section: - case OMPD_single: - case OMPD_master: - case OMPD_critical: - case OMPD_taskyield: - case OMPD_barrier: - case OMPD_taskwait: - case OMPD_taskgroup: - case OMPD_atomic: - case OMPD_flush: - case OMPD_teams: - case OMPD_target_data: - case OMPD_target_exit_data: - case OMPD_target_enter_data: - case OMPD_distribute: - case OMPD_distribute_simd: - case OMPD_distribute_parallel_for: - case OMPD_distribute_parallel_for_simd: - case OMPD_teams_distribute: - case OMPD_teams_distribute_simd: - case OMPD_teams_distribute_parallel_for: - case OMPD_teams_distribute_parallel_for_simd: - case OMPD_target_update: - case OMPD_declare_simd: - case OMPD_declare_target: - case OMPD_end_declare_target: - case OMPD_declare_reduction: - case OMPD_taskloop: - case OMPD_taskloop_simd: - case OMPD_requires: - case OMPD_unknown: - llvm_unreachable("Unexpected directive."); - } - } - - return nullptr; -} - -void CGOpenMPRuntime::emitTargetNumIterationsCall( - CodeGenFunction &CGF, const OMPExecutableDirective &D, const Expr *Device, - const llvm::function_ref<llvm::Value *( - CodeGenFunction &CGF, const OMPLoopDirective &D)> &SizeEmitter) { - OpenMPDirectiveKind Kind = D.getDirectiveKind(); - const OMPExecutableDirective *TD = &D; - // Get nested teams distribute kind directive, if any. - if (!isOpenMPDistributeDirective(Kind) || !isOpenMPTeamsDirective(Kind)) - TD = getNestedDistributeDirective(CGM.getContext(), D); - if (!TD) - return; - const auto *LD = cast<OMPLoopDirective>(TD); - auto &&CodeGen = [LD, &Device, &SizeEmitter, this](CodeGenFunction &CGF, - PrePostActionTy &) { - llvm::Value *NumIterations = SizeEmitter(CGF, *LD); - - // Emit device ID if any. - llvm::Value *DeviceID; - if (Device) - DeviceID = CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(Device), - CGF.Int64Ty, /*isSigned=*/true); - else - DeviceID = CGF.Builder.getInt64(OMP_DEVICEID_UNDEF); - - llvm::Value *Args[] = {DeviceID, NumIterations}; - CGF.EmitRuntimeCall( - createRuntimeFunction(OMPRTL__kmpc_push_target_tripcount), Args); - }; - emitInlinedDirective(CGF, OMPD_unknown, CodeGen); -} - -void CGOpenMPRuntime::emitTargetCall(CodeGenFunction &CGF, - const OMPExecutableDirective &D, - llvm::Value *OutlinedFn, - llvm::Value *OutlinedFnID, - const Expr *IfCond, const Expr *Device) { - if (!CGF.HaveInsertPoint()) - return; - - assert(OutlinedFn && "Invalid outlined function!"); - - const bool RequiresOuterTask = D.hasClausesOfKind<OMPDependClause>(); - llvm::SmallVector<llvm::Value *, 16> CapturedVars; - const CapturedStmt &CS = *D.getCapturedStmt(OMPD_target); - auto &&ArgsCodegen = [&CS, &CapturedVars](CodeGenFunction &CGF, - PrePostActionTy &) { - CGF.GenerateOpenMPCapturedVars(CS, CapturedVars); - }; - emitInlinedDirective(CGF, OMPD_unknown, ArgsCodegen); - - CodeGenFunction::OMPTargetDataInfo InputInfo; - llvm::Value *MapTypesArray = nullptr; - // Fill up the pointer arrays and transfer execution to the device. - auto &&ThenGen = [this, Device, OutlinedFn, OutlinedFnID, &D, &InputInfo, - &MapTypesArray, &CS, RequiresOuterTask, - &CapturedVars](CodeGenFunction &CGF, PrePostActionTy &) { - // On top of the arrays that were filled up, the target offloading call - // takes as arguments the device id as well as the host pointer. The host - // pointer is used by the runtime library to identify the current target - // region, so it only has to be unique and not necessarily point to - // anything. It could be the pointer to the outlined function that - // implements the target region, but we aren't using that so that the - // compiler doesn't need to keep that, and could therefore inline the host - // function if proven worthwhile during optimization. - - // From this point on, we need to have an ID of the target region defined. - assert(OutlinedFnID && "Invalid outlined function ID!"); - - // Emit device ID if any. - llvm::Value *DeviceID; - if (Device) { - DeviceID = CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(Device), - CGF.Int64Ty, /*isSigned=*/true); - } else { - DeviceID = CGF.Builder.getInt64(OMP_DEVICEID_UNDEF); - } - - // Emit the number of elements in the offloading arrays. - llvm::Value *PointerNum = - CGF.Builder.getInt32(InputInfo.NumberOfTargetItems); - - // Return value of the runtime offloading call. - llvm::Value *Return; - - llvm::Value *NumTeams = emitNumTeamsForTargetDirective(*this, CGF, D); - llvm::Value *NumThreads = emitNumThreadsForTargetDirective(*this, CGF, D); - - bool HasNowait = D.hasClausesOfKind<OMPNowaitClause>(); - // The target region is an outlined function launched by the runtime - // via calls __tgt_target() or __tgt_target_teams(). - // - // __tgt_target() launches a target region with one team and one thread, - // executing a serial region. This master thread may in turn launch - // more threads within its team upon encountering a parallel region, - // however, no additional teams can be launched on the device. - // - // __tgt_target_teams() launches a target region with one or more teams, - // each with one or more threads. This call is required for target - // constructs such as: - // 'target teams' - // 'target' / 'teams' - // 'target teams distribute parallel for' - // 'target parallel' - // and so on. - // - // Note that on the host and CPU targets, the runtime implementation of - // these calls simply call the outlined function without forking threads. - // The outlined functions themselves have runtime calls to - // __kmpc_fork_teams() and __kmpc_fork() for this purpose, codegen'd by - // the compiler in emitTeamsCall() and emitParallelCall(). - // - // In contrast, on the NVPTX target, the implementation of - // __tgt_target_teams() launches a GPU kernel with the requested number - // of teams and threads so no additional calls to the runtime are required. - if (NumTeams) { - // If we have NumTeams defined this means that we have an enclosed teams - // region. Therefore we also expect to have NumThreads defined. These two - // values should be defined in the presence of a teams directive, - // regardless of having any clauses associated. If the user is using teams - // but no clauses, these two values will be the default that should be - // passed to the runtime library - a 32-bit integer with the value zero. - assert(NumThreads && "Thread limit expression should be available along " - "with number of teams."); - llvm::Value *OffloadingArgs[] = {DeviceID, - OutlinedFnID, - PointerNum, - InputInfo.BasePointersArray.getPointer(), - InputInfo.PointersArray.getPointer(), - InputInfo.SizesArray.getPointer(), - MapTypesArray, - NumTeams, - NumThreads}; - Return = CGF.EmitRuntimeCall( - createRuntimeFunction(HasNowait ? OMPRTL__tgt_target_teams_nowait - : OMPRTL__tgt_target_teams), - OffloadingArgs); - } else { - llvm::Value *OffloadingArgs[] = {DeviceID, - OutlinedFnID, - PointerNum, - InputInfo.BasePointersArray.getPointer(), - InputInfo.PointersArray.getPointer(), - InputInfo.SizesArray.getPointer(), - MapTypesArray}; - Return = CGF.EmitRuntimeCall( - createRuntimeFunction(HasNowait ? OMPRTL__tgt_target_nowait - : OMPRTL__tgt_target), - OffloadingArgs); - } - - // Check the error code and execute the host version if required. - llvm::BasicBlock *OffloadFailedBlock = - CGF.createBasicBlock("omp_offload.failed"); - llvm::BasicBlock *OffloadContBlock = - CGF.createBasicBlock("omp_offload.cont"); - llvm::Value *Failed = CGF.Builder.CreateIsNotNull(Return); - CGF.Builder.CreateCondBr(Failed, OffloadFailedBlock, OffloadContBlock); - - CGF.EmitBlock(OffloadFailedBlock); - if (RequiresOuterTask) { - CapturedVars.clear(); - CGF.GenerateOpenMPCapturedVars(CS, CapturedVars); - } - emitOutlinedFunctionCall(CGF, D.getBeginLoc(), OutlinedFn, CapturedVars); - CGF.EmitBranch(OffloadContBlock); - - CGF.EmitBlock(OffloadContBlock, /*IsFinished=*/true); - }; - - // Notify that the host version must be executed. - auto &&ElseGen = [this, &D, OutlinedFn, &CS, &CapturedVars, - RequiresOuterTask](CodeGenFunction &CGF, - PrePostActionTy &) { - if (RequiresOuterTask) { - CapturedVars.clear(); - CGF.GenerateOpenMPCapturedVars(CS, CapturedVars); - } - emitOutlinedFunctionCall(CGF, D.getBeginLoc(), OutlinedFn, CapturedVars); - }; - - auto &&TargetThenGen = [this, &ThenGen, &D, &InputInfo, &MapTypesArray, - &CapturedVars, RequiresOuterTask, - &CS](CodeGenFunction &CGF, PrePostActionTy &) { - // Fill up the arrays with all the captured variables. - MappableExprsHandler::MapBaseValuesArrayTy BasePointers; - MappableExprsHandler::MapValuesArrayTy Pointers; - MappableExprsHandler::MapValuesArrayTy Sizes; - MappableExprsHandler::MapFlagsArrayTy MapTypes; - - // Get mappable expression information. - MappableExprsHandler MEHandler(D, CGF); - llvm::DenseMap<llvm::Value *, llvm::Value *> LambdaPointers; - - auto RI = CS.getCapturedRecordDecl()->field_begin(); - auto CV = CapturedVars.begin(); - for (CapturedStmt::const_capture_iterator CI = CS.capture_begin(), - CE = CS.capture_end(); - CI != CE; ++CI, ++RI, ++CV) { - MappableExprsHandler::MapBaseValuesArrayTy CurBasePointers; - MappableExprsHandler::MapValuesArrayTy CurPointers; - MappableExprsHandler::MapValuesArrayTy CurSizes; - MappableExprsHandler::MapFlagsArrayTy CurMapTypes; - MappableExprsHandler::StructRangeInfoTy PartialStruct; - - // VLA sizes are passed to the outlined region by copy and do not have map - // information associated. - if (CI->capturesVariableArrayType()) { - CurBasePointers.push_back(*CV); - CurPointers.push_back(*CV); - CurSizes.push_back(CGF.getTypeSize(RI->getType())); - // Copy to the device as an argument. No need to retrieve it. - CurMapTypes.push_back(MappableExprsHandler::OMP_MAP_LITERAL | - MappableExprsHandler::OMP_MAP_TARGET_PARAM); - } else { - // If we have any information in the map clause, we use it, otherwise we - // just do a default mapping. - MEHandler.generateInfoForCapture(CI, *CV, CurBasePointers, CurPointers, - CurSizes, CurMapTypes, PartialStruct); - if (CurBasePointers.empty()) - MEHandler.generateDefaultMapInfo(*CI, **RI, *CV, CurBasePointers, - CurPointers, CurSizes, CurMapTypes); - // Generate correct mapping for variables captured by reference in - // lambdas. - if (CI->capturesVariable()) - MEHandler.generateInfoForLambdaCaptures( - CI->getCapturedVar(), *CV, CurBasePointers, CurPointers, CurSizes, - CurMapTypes, LambdaPointers); - } - // We expect to have at least an element of information for this capture. - assert(!CurBasePointers.empty() && - "Non-existing map pointer for capture!"); - assert(CurBasePointers.size() == CurPointers.size() && - CurBasePointers.size() == CurSizes.size() && - CurBasePointers.size() == CurMapTypes.size() && - "Inconsistent map information sizes!"); - - // If there is an entry in PartialStruct it means we have a struct with - // individual members mapped. Emit an extra combined entry. - if (PartialStruct.Base.isValid()) - MEHandler.emitCombinedEntry(BasePointers, Pointers, Sizes, MapTypes, - CurMapTypes, PartialStruct); - - // We need to append the results of this capture to what we already have. - BasePointers.append(CurBasePointers.begin(), CurBasePointers.end()); - Pointers.append(CurPointers.begin(), CurPointers.end()); - Sizes.append(CurSizes.begin(), CurSizes.end()); - MapTypes.append(CurMapTypes.begin(), CurMapTypes.end()); - } - // Adjust MEMBER_OF flags for the lambdas captures. - MEHandler.adjustMemberOfForLambdaCaptures(LambdaPointers, BasePointers, - Pointers, MapTypes); - // Map other list items in the map clause which are not captured variables - // but "declare target link" global variables. - MEHandler.generateInfoForDeclareTargetLink(BasePointers, Pointers, Sizes, - MapTypes); - - TargetDataInfo Info; - // Fill up the arrays and create the arguments. - emitOffloadingArrays(CGF, BasePointers, Pointers, Sizes, MapTypes, Info); - emitOffloadingArraysArgument(CGF, Info.BasePointersArray, - Info.PointersArray, Info.SizesArray, - Info.MapTypesArray, Info); - InputInfo.NumberOfTargetItems = Info.NumberOfPtrs; - InputInfo.BasePointersArray = - Address(Info.BasePointersArray, CGM.getPointerAlign()); - InputInfo.PointersArray = - Address(Info.PointersArray, CGM.getPointerAlign()); - InputInfo.SizesArray = Address(Info.SizesArray, CGM.getPointerAlign()); - MapTypesArray = Info.MapTypesArray; - if (RequiresOuterTask) - CGF.EmitOMPTargetTaskBasedDirective(D, ThenGen, InputInfo); - else - emitInlinedDirective(CGF, D.getDirectiveKind(), ThenGen); - }; - - auto &&TargetElseGen = [this, &ElseGen, &D, RequiresOuterTask]( - CodeGenFunction &CGF, PrePostActionTy &) { - if (RequiresOuterTask) { - CodeGenFunction::OMPTargetDataInfo InputInfo; - CGF.EmitOMPTargetTaskBasedDirective(D, ElseGen, InputInfo); - } else { - emitInlinedDirective(CGF, D.getDirectiveKind(), ElseGen); - } - }; - - // If we have a target function ID it means that we need to support - // offloading, otherwise, just execute on the host. We need to execute on host - // regardless of the conditional in the if clause if, e.g., the user do not - // specify target triples. - if (OutlinedFnID) { - if (IfCond) { - emitOMPIfClause(CGF, IfCond, TargetThenGen, TargetElseGen); - } else { - RegionCodeGenTy ThenRCG(TargetThenGen); - ThenRCG(CGF); - } - } else { - RegionCodeGenTy ElseRCG(TargetElseGen); - ElseRCG(CGF); - } -} - -void CGOpenMPRuntime::scanForTargetRegionsFunctions(const Stmt *S, - StringRef ParentName) { - if (!S) - return; - - // Codegen OMP target directives that offload compute to the device. - bool RequiresDeviceCodegen = - isa<OMPExecutableDirective>(S) && - isOpenMPTargetExecutionDirective( - cast<OMPExecutableDirective>(S)->getDirectiveKind()); - - if (RequiresDeviceCodegen) { - const auto &E = *cast<OMPExecutableDirective>(S); - unsigned DeviceID; - unsigned FileID; - unsigned Line; - getTargetEntryUniqueInfo(CGM.getContext(), E.getBeginLoc(), DeviceID, - FileID, Line); - - // Is this a target region that should not be emitted as an entry point? If - // so just signal we are done with this target region. - if (!OffloadEntriesInfoManager.hasTargetRegionEntryInfo(DeviceID, FileID, - ParentName, Line)) - return; - - switch (E.getDirectiveKind()) { - case OMPD_target: - CodeGenFunction::EmitOMPTargetDeviceFunction(CGM, ParentName, - cast<OMPTargetDirective>(E)); - break; - case OMPD_target_parallel: - CodeGenFunction::EmitOMPTargetParallelDeviceFunction( - CGM, ParentName, cast<OMPTargetParallelDirective>(E)); - break; - case OMPD_target_teams: - CodeGenFunction::EmitOMPTargetTeamsDeviceFunction( - CGM, ParentName, cast<OMPTargetTeamsDirective>(E)); - break; - case OMPD_target_teams_distribute: - CodeGenFunction::EmitOMPTargetTeamsDistributeDeviceFunction( - CGM, ParentName, cast<OMPTargetTeamsDistributeDirective>(E)); - break; - case OMPD_target_teams_distribute_simd: - CodeGenFunction::EmitOMPTargetTeamsDistributeSimdDeviceFunction( - CGM, ParentName, cast<OMPTargetTeamsDistributeSimdDirective>(E)); - break; - case OMPD_target_parallel_for: - CodeGenFunction::EmitOMPTargetParallelForDeviceFunction( - CGM, ParentName, cast<OMPTargetParallelForDirective>(E)); - break; - case OMPD_target_parallel_for_simd: - CodeGenFunction::EmitOMPTargetParallelForSimdDeviceFunction( - CGM, ParentName, cast<OMPTargetParallelForSimdDirective>(E)); - break; - case OMPD_target_simd: - CodeGenFunction::EmitOMPTargetSimdDeviceFunction( - CGM, ParentName, cast<OMPTargetSimdDirective>(E)); - break; - case OMPD_target_teams_distribute_parallel_for: - CodeGenFunction::EmitOMPTargetTeamsDistributeParallelForDeviceFunction( - CGM, ParentName, - cast<OMPTargetTeamsDistributeParallelForDirective>(E)); - break; - case OMPD_target_teams_distribute_parallel_for_simd: - CodeGenFunction:: - EmitOMPTargetTeamsDistributeParallelForSimdDeviceFunction( - CGM, ParentName, - cast<OMPTargetTeamsDistributeParallelForSimdDirective>(E)); - break; - case OMPD_parallel: - case OMPD_for: - case OMPD_parallel_for: - case OMPD_parallel_sections: - case OMPD_for_simd: - case OMPD_parallel_for_simd: - case OMPD_cancel: - case OMPD_cancellation_point: - case OMPD_ordered: - case OMPD_threadprivate: - case OMPD_task: - case OMPD_simd: - case OMPD_sections: - case OMPD_section: - case OMPD_single: - case OMPD_master: - case OMPD_critical: - case OMPD_taskyield: - case OMPD_barrier: - case OMPD_taskwait: - case OMPD_taskgroup: - case OMPD_atomic: - case OMPD_flush: - case OMPD_teams: - case OMPD_target_data: - case OMPD_target_exit_data: - case OMPD_target_enter_data: - case OMPD_distribute: - case OMPD_distribute_simd: - case OMPD_distribute_parallel_for: - case OMPD_distribute_parallel_for_simd: - case OMPD_teams_distribute: - case OMPD_teams_distribute_simd: - case OMPD_teams_distribute_parallel_for: - case OMPD_teams_distribute_parallel_for_simd: - case OMPD_target_update: - case OMPD_declare_simd: - case OMPD_declare_target: - case OMPD_end_declare_target: - case OMPD_declare_reduction: - case OMPD_taskloop: - case OMPD_taskloop_simd: - case OMPD_requires: - case OMPD_unknown: - llvm_unreachable("Unknown target directive for OpenMP device codegen."); - } - return; - } - - if (const auto *E = dyn_cast<OMPExecutableDirective>(S)) { - if (!E->hasAssociatedStmt() || !E->getAssociatedStmt()) - return; - - scanForTargetRegionsFunctions( - E->getInnermostCapturedStmt()->getCapturedStmt(), ParentName); - return; - } - - // If this is a lambda function, look into its body. - if (const auto *L = dyn_cast<LambdaExpr>(S)) - S = L->getBody(); - - // Keep looking for target regions recursively. - for (const Stmt *II : S->children()) - scanForTargetRegionsFunctions(II, ParentName); -} - -bool CGOpenMPRuntime::emitTargetFunctions(GlobalDecl GD) { - // If emitting code for the host, we do not process FD here. Instead we do - // the normal code generation. - if (!CGM.getLangOpts().OpenMPIsDevice) - return false; - - const ValueDecl *VD = cast<ValueDecl>(GD.getDecl()); - StringRef Name = CGM.getMangledName(GD); - // Try to detect target regions in the function. - if (const auto *FD = dyn_cast<FunctionDecl>(VD)) - scanForTargetRegionsFunctions(FD->getBody(), Name); - - // Do not to emit function if it is not marked as declare target. - return !OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD) && - AlreadyEmittedTargetFunctions.count(Name) == 0; -} - -bool CGOpenMPRuntime::emitTargetGlobalVariable(GlobalDecl GD) { - if (!CGM.getLangOpts().OpenMPIsDevice) - return false; - - // Check if there are Ctors/Dtors in this declaration and look for target - // regions in it. We use the complete variant to produce the kernel name - // mangling. - QualType RDTy = cast<VarDecl>(GD.getDecl())->getType(); - if (const auto *RD = RDTy->getBaseElementTypeUnsafe()->getAsCXXRecordDecl()) { - for (const CXXConstructorDecl *Ctor : RD->ctors()) { - StringRef ParentName = - CGM.getMangledName(GlobalDecl(Ctor, Ctor_Complete)); - scanForTargetRegionsFunctions(Ctor->getBody(), ParentName); - } - if (const CXXDestructorDecl *Dtor = RD->getDestructor()) { - StringRef ParentName = - CGM.getMangledName(GlobalDecl(Dtor, Dtor_Complete)); - scanForTargetRegionsFunctions(Dtor->getBody(), ParentName); - } - } - - // Do not to emit variable if it is not marked as declare target. - llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration( - cast<VarDecl>(GD.getDecl())); - if (!Res || *Res == OMPDeclareTargetDeclAttr::MT_Link) { - DeferredGlobalVariables.insert(cast<VarDecl>(GD.getDecl())); - return true; - } - return false; -} - -void CGOpenMPRuntime::registerTargetGlobalVariable(const VarDecl *VD, - llvm::Constant *Addr) { - llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD); - if (!Res) { - if (CGM.getLangOpts().OpenMPIsDevice) { - // Register non-target variables being emitted in device code (debug info - // may cause this). - StringRef VarName = CGM.getMangledName(VD); - EmittedNonTargetVariables.try_emplace(VarName, Addr); - } - return; - } - // Register declare target variables. - OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryKind Flags; - StringRef VarName; - CharUnits VarSize; - llvm::GlobalValue::LinkageTypes Linkage; - switch (*Res) { - case OMPDeclareTargetDeclAttr::MT_To: - Flags = OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryTo; - VarName = CGM.getMangledName(VD); - if (VD->hasDefinition(CGM.getContext()) != VarDecl::DeclarationOnly) { - VarSize = CGM.getContext().getTypeSizeInChars(VD->getType()); - assert(!VarSize.isZero() && "Expected non-zero size of the variable"); - } else { - VarSize = CharUnits::Zero(); - } - Linkage = CGM.getLLVMLinkageVarDefinition(VD, /*IsConstant=*/false); - // Temp solution to prevent optimizations of the internal variables. - if (CGM.getLangOpts().OpenMPIsDevice && !VD->isExternallyVisible()) { - std::string RefName = getName({VarName, "ref"}); - if (!CGM.GetGlobalValue(RefName)) { - llvm::Constant *AddrRef = - getOrCreateInternalVariable(Addr->getType(), RefName); - auto *GVAddrRef = cast<llvm::GlobalVariable>(AddrRef); - GVAddrRef->setConstant(/*Val=*/true); - GVAddrRef->setLinkage(llvm::GlobalValue::InternalLinkage); - GVAddrRef->setInitializer(Addr); - CGM.addCompilerUsedGlobal(GVAddrRef); - } - } - break; - case OMPDeclareTargetDeclAttr::MT_Link: - Flags = OffloadEntriesInfoManagerTy::OMPTargetGlobalVarEntryLink; - if (CGM.getLangOpts().OpenMPIsDevice) { - VarName = Addr->getName(); - Addr = nullptr; - } else { - VarName = getAddrOfDeclareTargetLink(VD).getName(); - Addr = cast<llvm::Constant>(getAddrOfDeclareTargetLink(VD).getPointer()); - } - VarSize = CGM.getPointerSize(); - Linkage = llvm::GlobalValue::WeakAnyLinkage; - break; - } - OffloadEntriesInfoManager.registerDeviceGlobalVarEntryInfo( - VarName, Addr, VarSize, Flags, Linkage); -} - -bool CGOpenMPRuntime::emitTargetGlobal(GlobalDecl GD) { - if (isa<FunctionDecl>(GD.getDecl()) || - isa<OMPDeclareReductionDecl>(GD.getDecl())) - return emitTargetFunctions(GD); - - return emitTargetGlobalVariable(GD); -} - -void CGOpenMPRuntime::emitDeferredTargetDecls() const { - for (const VarDecl *VD : DeferredGlobalVariables) { - llvm::Optional<OMPDeclareTargetDeclAttr::MapTypeTy> Res = - OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(VD); - if (!Res) - continue; - if (*Res == OMPDeclareTargetDeclAttr::MT_To) { - CGM.EmitGlobal(VD); - } else { - assert(*Res == OMPDeclareTargetDeclAttr::MT_Link && - "Expected to or link clauses."); - (void)CGM.getOpenMPRuntime().getAddrOfDeclareTargetLink(VD); - } - } -} - -void CGOpenMPRuntime::adjustTargetSpecificDataForLambdas( - CodeGenFunction &CGF, const OMPExecutableDirective &D) const { - assert(isOpenMPTargetExecutionDirective(D.getDirectiveKind()) && - " Expected target-based directive."); -} - -CGOpenMPRuntime::DisableAutoDeclareTargetRAII::DisableAutoDeclareTargetRAII( - CodeGenModule &CGM) - : CGM(CGM) { - if (CGM.getLangOpts().OpenMPIsDevice) { - SavedShouldMarkAsGlobal = CGM.getOpenMPRuntime().ShouldMarkAsGlobal; - CGM.getOpenMPRuntime().ShouldMarkAsGlobal = false; - } -} - -CGOpenMPRuntime::DisableAutoDeclareTargetRAII::~DisableAutoDeclareTargetRAII() { - if (CGM.getLangOpts().OpenMPIsDevice) - CGM.getOpenMPRuntime().ShouldMarkAsGlobal = SavedShouldMarkAsGlobal; -} - -bool CGOpenMPRuntime::markAsGlobalTarget(GlobalDecl GD) { - if (!CGM.getLangOpts().OpenMPIsDevice || !ShouldMarkAsGlobal) - return true; - - StringRef Name = CGM.getMangledName(GD); - const auto *D = cast<FunctionDecl>(GD.getDecl()); - // Do not to emit function if it is marked as declare target as it was already - // emitted. - if (OMPDeclareTargetDeclAttr::isDeclareTargetDeclaration(D)) { - if (D->hasBody() && AlreadyEmittedTargetFunctions.count(Name) == 0) { - if (auto *F = dyn_cast_or_null<llvm::Function>(CGM.GetGlobalValue(Name))) - return !F->isDeclaration(); - return false; - } - return true; - } - - return !AlreadyEmittedTargetFunctions.insert(Name).second; -} - -llvm::Function *CGOpenMPRuntime::emitRegistrationFunction() { - // If we have offloading in the current module, we need to emit the entries - // now and register the offloading descriptor. - createOffloadEntriesAndInfoMetadata(); - - // Create and register the offloading binary descriptors. This is the main - // entity that captures all the information about offloading in the current - // compilation unit. - return createOffloadingBinaryDescriptorRegistration(); -} - -void CGOpenMPRuntime::emitTeamsCall(CodeGenFunction &CGF, - const OMPExecutableDirective &D, - SourceLocation Loc, - llvm::Value *OutlinedFn, - ArrayRef<llvm::Value *> CapturedVars) { - if (!CGF.HaveInsertPoint()) - return; - - llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc); - CodeGenFunction::RunCleanupsScope Scope(CGF); - - // Build call __kmpc_fork_teams(loc, n, microtask, var1, .., varn); - llvm::Value *Args[] = { - RTLoc, - CGF.Builder.getInt32(CapturedVars.size()), // Number of captured vars - CGF.Builder.CreateBitCast(OutlinedFn, getKmpc_MicroPointerTy())}; - llvm::SmallVector<llvm::Value *, 16> RealArgs; - RealArgs.append(std::begin(Args), std::end(Args)); - RealArgs.append(CapturedVars.begin(), CapturedVars.end()); - - llvm::Value *RTLFn = createRuntimeFunction(OMPRTL__kmpc_fork_teams); - CGF.EmitRuntimeCall(RTLFn, RealArgs); -} - -void CGOpenMPRuntime::emitNumTeamsClause(CodeGenFunction &CGF, - const Expr *NumTeams, - const Expr *ThreadLimit, - SourceLocation Loc) { - if (!CGF.HaveInsertPoint()) - return; - - llvm::Value *RTLoc = emitUpdateLocation(CGF, Loc); - - llvm::Value *NumTeamsVal = - NumTeams - ? CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(NumTeams), - CGF.CGM.Int32Ty, /* isSigned = */ true) - : CGF.Builder.getInt32(0); - - llvm::Value *ThreadLimitVal = - ThreadLimit - ? CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(ThreadLimit), - CGF.CGM.Int32Ty, /* isSigned = */ true) - : CGF.Builder.getInt32(0); - - // Build call __kmpc_push_num_teamss(&loc, global_tid, num_teams, thread_limit) - llvm::Value *PushNumTeamsArgs[] = {RTLoc, getThreadID(CGF, Loc), NumTeamsVal, - ThreadLimitVal}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__kmpc_push_num_teams), - PushNumTeamsArgs); -} - -void CGOpenMPRuntime::emitTargetDataCalls( - CodeGenFunction &CGF, const OMPExecutableDirective &D, const Expr *IfCond, - const Expr *Device, const RegionCodeGenTy &CodeGen, TargetDataInfo &Info) { - if (!CGF.HaveInsertPoint()) - return; - - // Action used to replace the default codegen action and turn privatization - // off. - PrePostActionTy NoPrivAction; - - // Generate the code for the opening of the data environment. Capture all the - // arguments of the runtime call by reference because they are used in the - // closing of the region. - auto &&BeginThenGen = [this, &D, Device, &Info, - &CodeGen](CodeGenFunction &CGF, PrePostActionTy &) { - // Fill up the arrays with all the mapped variables. - MappableExprsHandler::MapBaseValuesArrayTy BasePointers; - MappableExprsHandler::MapValuesArrayTy Pointers; - MappableExprsHandler::MapValuesArrayTy Sizes; - MappableExprsHandler::MapFlagsArrayTy MapTypes; - - // Get map clause information. - MappableExprsHandler MCHandler(D, CGF); - MCHandler.generateAllInfo(BasePointers, Pointers, Sizes, MapTypes); - - // Fill up the arrays and create the arguments. - emitOffloadingArrays(CGF, BasePointers, Pointers, Sizes, MapTypes, Info); - - llvm::Value *BasePointersArrayArg = nullptr; - llvm::Value *PointersArrayArg = nullptr; - llvm::Value *SizesArrayArg = nullptr; - llvm::Value *MapTypesArrayArg = nullptr; - emitOffloadingArraysArgument(CGF, BasePointersArrayArg, PointersArrayArg, - SizesArrayArg, MapTypesArrayArg, Info); - - // Emit device ID if any. - llvm::Value *DeviceID = nullptr; - if (Device) { - DeviceID = CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(Device), - CGF.Int64Ty, /*isSigned=*/true); - } else { - DeviceID = CGF.Builder.getInt64(OMP_DEVICEID_UNDEF); - } - - // Emit the number of elements in the offloading arrays. - llvm::Value *PointerNum = CGF.Builder.getInt32(Info.NumberOfPtrs); - - llvm::Value *OffloadingArgs[] = { - DeviceID, PointerNum, BasePointersArrayArg, - PointersArrayArg, SizesArrayArg, MapTypesArrayArg}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__tgt_target_data_begin), - OffloadingArgs); - - // If device pointer privatization is required, emit the body of the region - // here. It will have to be duplicated: with and without privatization. - if (!Info.CaptureDeviceAddrMap.empty()) - CodeGen(CGF); - }; - - // Generate code for the closing of the data region. - auto &&EndThenGen = [this, Device, &Info](CodeGenFunction &CGF, - PrePostActionTy &) { - assert(Info.isValid() && "Invalid data environment closing arguments."); - - llvm::Value *BasePointersArrayArg = nullptr; - llvm::Value *PointersArrayArg = nullptr; - llvm::Value *SizesArrayArg = nullptr; - llvm::Value *MapTypesArrayArg = nullptr; - emitOffloadingArraysArgument(CGF, BasePointersArrayArg, PointersArrayArg, - SizesArrayArg, MapTypesArrayArg, Info); - - // Emit device ID if any. - llvm::Value *DeviceID = nullptr; - if (Device) { - DeviceID = CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(Device), - CGF.Int64Ty, /*isSigned=*/true); - } else { - DeviceID = CGF.Builder.getInt64(OMP_DEVICEID_UNDEF); - } - - // Emit the number of elements in the offloading arrays. - llvm::Value *PointerNum = CGF.Builder.getInt32(Info.NumberOfPtrs); - - llvm::Value *OffloadingArgs[] = { - DeviceID, PointerNum, BasePointersArrayArg, - PointersArrayArg, SizesArrayArg, MapTypesArrayArg}; - CGF.EmitRuntimeCall(createRuntimeFunction(OMPRTL__tgt_target_data_end), - OffloadingArgs); - }; - - // If we need device pointer privatization, we need to emit the body of the - // region with no privatization in the 'else' branch of the conditional. - // Otherwise, we don't have to do anything. - auto &&BeginElseGen = [&Info, &CodeGen, &NoPrivAction](CodeGenFunction &CGF, - PrePostActionTy &) { - if (!Info.CaptureDeviceAddrMap.empty()) { - CodeGen.setAction(NoPrivAction); - CodeGen(CGF); - } - }; - - // We don't have to do anything to close the region if the if clause evaluates - // to false. - auto &&EndElseGen = [](CodeGenFunction &CGF, PrePostActionTy &) {}; - - if (IfCond) { - emitOMPIfClause(CGF, IfCond, BeginThenGen, BeginElseGen); - } else { - RegionCodeGenTy RCG(BeginThenGen); - RCG(CGF); - } - - // If we don't require privatization of device pointers, we emit the body in - // between the runtime calls. This avoids duplicating the body code. - if (Info.CaptureDeviceAddrMap.empty()) { - CodeGen.setAction(NoPrivAction); - CodeGen(CGF); - } - - if (IfCond) { - emitOMPIfClause(CGF, IfCond, EndThenGen, EndElseGen); - } else { - RegionCodeGenTy RCG(EndThenGen); - RCG(CGF); - } -} - -void CGOpenMPRuntime::emitTargetDataStandAloneCall( - CodeGenFunction &CGF, const OMPExecutableDirective &D, const Expr *IfCond, - const Expr *Device) { - if (!CGF.HaveInsertPoint()) - return; - - assert((isa<OMPTargetEnterDataDirective>(D) || - isa<OMPTargetExitDataDirective>(D) || - isa<OMPTargetUpdateDirective>(D)) && - "Expecting either target enter, exit data, or update directives."); - - CodeGenFunction::OMPTargetDataInfo InputInfo; - llvm::Value *MapTypesArray = nullptr; - // Generate the code for the opening of the data environment. - auto &&ThenGen = [this, &D, Device, &InputInfo, - &MapTypesArray](CodeGenFunction &CGF, PrePostActionTy &) { - // Emit device ID if any. - llvm::Value *DeviceID = nullptr; - if (Device) { - DeviceID = CGF.Builder.CreateIntCast(CGF.EmitScalarExpr(Device), - CGF.Int64Ty, /*isSigned=*/true); - } else { - DeviceID = CGF.Builder.getInt64(OMP_DEVICEID_UNDEF); - } - - // Emit the number of elements in the offloading arrays. - llvm::Constant *PointerNum = - CGF.Builder.getInt32(InputInfo.NumberOfTargetItems); - - llvm::Value *OffloadingArgs[] = {DeviceID, - PointerNum, - InputInfo.BasePointersArray.getPointer(), - InputInfo.PointersArray.getPointer(), - InputInfo.SizesArray.getPointer(), - MapTypesArray}; - - // Select the right runtime function call for each expected standalone - // directive. - const bool HasNowait = D.hasClausesOfKind<OMPNowaitClause>(); - OpenMPRTLFunction RTLFn; - switch (D.getDirectiveKind()) { - case OMPD_target_enter_data: - RTLFn = HasNowait ? OMPRTL__tgt_target_data_begin_nowait - : OMPRTL__tgt_target_data_begin; - break; - case OMPD_target_exit_data: - RTLFn = HasNowait ? OMPRTL__tgt_target_data_end_nowait - : OMPRTL__tgt_target_data_end; - break; - case OMPD_target_update: - RTLFn = HasNowait ? OMPRTL__tgt_target_data_update_nowait - : OMPRTL__tgt_target_data_update; - break; - case OMPD_parallel: - case OMPD_for: - case OMPD_parallel_for: - case OMPD_parallel_sections: - case OMPD_for_simd: - case OMPD_parallel_for_simd: - case OMPD_cancel: - case OMPD_cancellation_point: - case OMPD_ordered: - case OMPD_threadprivate: - case OMPD_task: - case OMPD_simd: - case OMPD_sections: - case OMPD_section: - case OMPD_single: - case OMPD_master: - case OMPD_critical: - case OMPD_taskyield: - case OMPD_barrier: - case OMPD_taskwait: - case OMPD_taskgroup: - case OMPD_atomic: - case OMPD_flush: - case OMPD_teams: - case OMPD_target_data: - case OMPD_distribute: - case OMPD_distribute_simd: - case OMPD_distribute_parallel_for: - case OMPD_distribute_parallel_for_simd: - case OMPD_teams_distribute: - case OMPD_teams_distribute_simd: - case OMPD_teams_distribute_parallel_for: - case OMPD_teams_distribute_parallel_for_simd: - case OMPD_declare_simd: - case OMPD_declare_target: - case OMPD_end_declare_target: - case OMPD_declare_reduction: - case OMPD_taskloop: - case OMPD_taskloop_simd: - case OMPD_target: - case OMPD_target_simd: - case OMPD_target_teams_distribute: - case OMPD_target_teams_distribute_simd: - case OMPD_target_teams_distribute_parallel_for: - case OMPD_target_teams_distribute_parallel_for_simd: - case OMPD_target_teams: - case OMPD_target_parallel: - case OMPD_target_parallel_for: - case OMPD_target_parallel_for_simd: - case OMPD_requires: - case OMPD_unknown: - llvm_unreachable("Unexpected standalone target data directive."); - break; - } - CGF.EmitRuntimeCall(createRuntimeFunction(RTLFn), OffloadingArgs); - }; - - auto &&TargetThenGen = [this, &ThenGen, &D, &InputInfo, &MapTypesArray]( - CodeGenFunction &CGF, PrePostActionTy &) { - // Fill up the arrays with all the mapped variables. - MappableExprsHandler::MapBaseValuesArrayTy BasePointers; - MappableExprsHandler::MapValuesArrayTy Pointers; - MappableExprsHandler::MapValuesArrayTy Sizes; - MappableExprsHandler::MapFlagsArrayTy MapTypes; - - // Get map clause information. - MappableExprsHandler MEHandler(D, CGF); - MEHandler.generateAllInfo(BasePointers, Pointers, Sizes, MapTypes); - - TargetDataInfo Info; - // Fill up the arrays and create the arguments. - emitOffloadingArrays(CGF, BasePointers, Pointers, Sizes, MapTypes, Info); - emitOffloadingArraysArgument(CGF, Info.BasePointersArray, - Info.PointersArray, Info.SizesArray, - Info.MapTypesArray, Info); - InputInfo.NumberOfTargetItems = Info.NumberOfPtrs; - InputInfo.BasePointersArray = - Address(Info.BasePointersArray, CGM.getPointerAlign()); - InputInfo.PointersArray = - Address(Info.PointersArray, CGM.getPointerAlign()); - InputInfo.SizesArray = - Address(Info.SizesArray, CGM.getPointerAlign()); - MapTypesArray = Info.MapTypesArray; - if (D.hasClausesOfKind<OMPDependClause>()) - CGF.EmitOMPTargetTaskBasedDirective(D, ThenGen, InputInfo); - else - emitInlinedDirective(CGF, D.getDirectiveKind(), ThenGen); - }; - - if (IfCond) { - emitOMPIfClause(CGF, IfCond, TargetThenGen, - [](CodeGenFunction &CGF, PrePostActionTy &) {}); - } else { - RegionCodeGenTy ThenRCG(TargetThenGen); - ThenRCG(CGF); - } -} - -namespace { - /// Kind of parameter in a function with 'declare simd' directive. - enum ParamKindTy { LinearWithVarStride, Linear, Uniform, Vector }; - /// Attribute set of the parameter. - struct ParamAttrTy { - ParamKindTy Kind = Vector; - llvm::APSInt StrideOrArg; - llvm::APSInt Alignment; - }; -} // namespace - -static unsigned evaluateCDTSize(const FunctionDecl *FD, - ArrayRef<ParamAttrTy> ParamAttrs) { - // Every vector variant of a SIMD-enabled function has a vector length (VLEN). - // If OpenMP clause "simdlen" is used, the VLEN is the value of the argument - // of that clause. The VLEN value must be power of 2. - // In other case the notion of the function`s "characteristic data type" (CDT) - // is used to compute the vector length. - // CDT is defined in the following order: - // a) For non-void function, the CDT is the return type. - // b) If the function has any non-uniform, non-linear parameters, then the - // CDT is the type of the first such parameter. - // c) If the CDT determined by a) or b) above is struct, union, or class - // type which is pass-by-value (except for the type that maps to the - // built-in complex data type), the characteristic data type is int. - // d) If none of the above three cases is applicable, the CDT is int. - // The VLEN is then determined based on the CDT and the size of vector - // register of that ISA for which current vector version is generated. The - // VLEN is computed using the formula below: - // VLEN = sizeof(vector_register) / sizeof(CDT), - // where vector register size specified in section 3.2.1 Registers and the - // Stack Frame of original AMD64 ABI document. - QualType RetType = FD->getReturnType(); - if (RetType.isNull()) - return 0; - ASTContext &C = FD->getASTContext(); - QualType CDT; - if (!RetType.isNull() && !RetType->isVoidType()) { - CDT = RetType; - } else { - unsigned Offset = 0; - if (const auto *MD = dyn_cast<CXXMethodDecl>(FD)) { - if (ParamAttrs[Offset].Kind == Vector) - CDT = C.getPointerType(C.getRecordType(MD->getParent())); - ++Offset; - } - if (CDT.isNull()) { - for (unsigned I = 0, E = FD->getNumParams(); I < E; ++I) { - if (ParamAttrs[I + Offset].Kind == Vector) { - CDT = FD->getParamDecl(I)->getType(); - break; - } - } - } - } - if (CDT.isNull()) - CDT = C.IntTy; - CDT = CDT->getCanonicalTypeUnqualified(); - if (CDT->isRecordType() || CDT->isUnionType()) - CDT = C.IntTy; - return C.getTypeSize(CDT); -} - -static void -emitX86DeclareSimdFunction(const FunctionDecl *FD, llvm::Function *Fn, - const llvm::APSInt &VLENVal, - ArrayRef<ParamAttrTy> ParamAttrs, - OMPDeclareSimdDeclAttr::BranchStateTy State) { - struct ISADataTy { - char ISA; - unsigned VecRegSize; - }; - ISADataTy ISAData[] = { - { - 'b', 128 - }, // SSE - { - 'c', 256 - }, // AVX - { - 'd', 256 - }, // AVX2 - { - 'e', 512 - }, // AVX512 - }; - llvm::SmallVector<char, 2> Masked; - switch (State) { - case OMPDeclareSimdDeclAttr::BS_Undefined: - Masked.push_back('N'); - Masked.push_back('M'); - break; - case OMPDeclareSimdDeclAttr::BS_Notinbranch: - Masked.push_back('N'); - break; - case OMPDeclareSimdDeclAttr::BS_Inbranch: - Masked.push_back('M'); - break; - } - for (char Mask : Masked) { - for (const ISADataTy &Data : ISAData) { - SmallString<256> Buffer; - llvm::raw_svector_ostream Out(Buffer); - Out << "_ZGV" << Data.ISA << Mask; - if (!VLENVal) { - Out << llvm::APSInt::getUnsigned(Data.VecRegSize / - evaluateCDTSize(FD, ParamAttrs)); - } else { - Out << VLENVal; - } - for (const ParamAttrTy &ParamAttr : ParamAttrs) { - switch (ParamAttr.Kind){ - case LinearWithVarStride: - Out << 's' << ParamAttr.StrideOrArg; - break; - case Linear: - Out << 'l'; - if (!!ParamAttr.StrideOrArg) - Out << ParamAttr.StrideOrArg; - break; - case Uniform: - Out << 'u'; - break; - case Vector: - Out << 'v'; - break; - } - if (!!ParamAttr.Alignment) - Out << 'a' << ParamAttr.Alignment; - } - Out << '_' << Fn->getName(); - Fn->addFnAttr(Out.str()); - } - } -} - -void CGOpenMPRuntime::emitDeclareSimdFunction(const FunctionDecl *FD, - llvm::Function *Fn) { - ASTContext &C = CGM.getContext(); - FD = FD->getMostRecentDecl(); - // Map params to their positions in function decl. - llvm::DenseMap<const Decl *, unsigned> ParamPositions; - if (isa<CXXMethodDecl>(FD)) - ParamPositions.try_emplace(FD, 0); - unsigned ParamPos = ParamPositions.size(); - for (const ParmVarDecl *P : FD->parameters()) { - ParamPositions.try_emplace(P->getCanonicalDecl(), ParamPos); - ++ParamPos; - } - while (FD) { - for (const auto *Attr : FD->specific_attrs<OMPDeclareSimdDeclAttr>()) { - llvm::SmallVector<ParamAttrTy, 8> ParamAttrs(ParamPositions.size()); - // Mark uniform parameters. - for (const Expr *E : Attr->uniforms()) { - E = E->IgnoreParenImpCasts(); - unsigned Pos; - if (isa<CXXThisExpr>(E)) { - Pos = ParamPositions[FD]; - } else { - const auto *PVD = cast<ParmVarDecl>(cast<DeclRefExpr>(E)->getDecl()) - ->getCanonicalDecl(); - Pos = ParamPositions[PVD]; - } - ParamAttrs[Pos].Kind = Uniform; - } - // Get alignment info. - auto NI = Attr->alignments_begin(); - for (const Expr *E : Attr->aligneds()) { - E = E->IgnoreParenImpCasts(); - unsigned Pos; - QualType ParmTy; - if (isa<CXXThisExpr>(E)) { - Pos = ParamPositions[FD]; - ParmTy = E->getType(); - } else { - const auto *PVD = cast<ParmVarDecl>(cast<DeclRefExpr>(E)->getDecl()) - ->getCanonicalDecl(); - Pos = ParamPositions[PVD]; - ParmTy = PVD->getType(); - } - ParamAttrs[Pos].Alignment = - (*NI) - ? (*NI)->EvaluateKnownConstInt(C) - : llvm::APSInt::getUnsigned( - C.toCharUnitsFromBits(C.getOpenMPDefaultSimdAlign(ParmTy)) - .getQuantity()); - ++NI; - } - // Mark linear parameters. - auto SI = Attr->steps_begin(); - auto MI = Attr->modifiers_begin(); - for (const Expr *E : Attr->linears()) { - E = E->IgnoreParenImpCasts(); - unsigned Pos; - if (isa<CXXThisExpr>(E)) { - Pos = ParamPositions[FD]; - } else { - const auto *PVD = cast<ParmVarDecl>(cast<DeclRefExpr>(E)->getDecl()) - ->getCanonicalDecl(); - Pos = ParamPositions[PVD]; - } - ParamAttrTy &ParamAttr = ParamAttrs[Pos]; - ParamAttr.Kind = Linear; - if (*SI) { - Expr::EvalResult Result; - if (!(*SI)->EvaluateAsInt(Result, C, Expr::SE_AllowSideEffects)) { - if (const auto *DRE = - cast<DeclRefExpr>((*SI)->IgnoreParenImpCasts())) { - if (const auto *StridePVD = cast<ParmVarDecl>(DRE->getDecl())) { - ParamAttr.Kind = LinearWithVarStride; - ParamAttr.StrideOrArg = llvm::APSInt::getUnsigned( - ParamPositions[StridePVD->getCanonicalDecl()]); - } - } - } else { - ParamAttr.StrideOrArg = Result.Val.getInt(); - } - } - ++SI; - ++MI; - } - llvm::APSInt VLENVal; - if (const Expr *VLEN = Attr->getSimdlen()) - VLENVal = VLEN->EvaluateKnownConstInt(C); - OMPDeclareSimdDeclAttr::BranchStateTy State = Attr->getBranchState(); - if (CGM.getTriple().getArch() == llvm::Triple::x86 || - CGM.getTriple().getArch() == llvm::Triple::x86_64) - emitX86DeclareSimdFunction(FD, Fn, VLENVal, ParamAttrs, State); - } - FD = FD->getPreviousDecl(); - } -} - -namespace { -/// Cleanup action for doacross support. -class DoacrossCleanupTy final : public EHScopeStack::Cleanup { -public: - static const int DoacrossFinArgs = 2; - -private: - llvm::Value *RTLFn; - llvm::Value *Args[DoacrossFinArgs]; - -public: - DoacrossCleanupTy(llvm::Value *RTLFn, ArrayRef<llvm::Value *> CallArgs) - : RTLFn(RTLFn) { - assert(CallArgs.size() == DoacrossFinArgs); - std::copy(CallArgs.begin(), CallArgs.end(), std::begin(Args)); - } - void Emit(CodeGenFunction &CGF, Flags /*flags*/) override { - if (!CGF.HaveInsertPoint()) - return; - CGF.EmitRuntimeCall(RTLFn, Args); - } -}; -} // namespace - -void CGOpenMPRuntime::emitDoacrossInit(CodeGenFunction &CGF, - const OMPLoopDirective &D, - ArrayRef<Expr *> NumIterations) { - if (!CGF.HaveInsertPoint()) - return; - - ASTContext &C = CGM.getContext(); - QualType Int64Ty = C.getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/true); - RecordDecl *RD; - if (KmpDimTy.isNull()) { - // Build struct kmp_dim { // loop bounds info casted to kmp_int64 - // kmp_int64 lo; // lower - // kmp_int64 up; // upper - // kmp_int64 st; // stride - // }; - RD = C.buildImplicitRecord("kmp_dim"); - RD->startDefinition(); - addFieldToRecordDecl(C, RD, Int64Ty); - addFieldToRecordDecl(C, RD, Int64Ty); - addFieldToRecordDecl(C, RD, Int64Ty); - RD->completeDefinition(); - KmpDimTy = C.getRecordType(RD); - } else { - RD = cast<RecordDecl>(KmpDimTy->getAsTagDecl()); - } - llvm::APInt Size(/*numBits=*/32, NumIterations.size()); - QualType ArrayTy = - C.getConstantArrayType(KmpDimTy, Size, ArrayType::Normal, 0); - - Address DimsAddr = CGF.CreateMemTemp(ArrayTy, "dims"); - CGF.EmitNullInitialization(DimsAddr, ArrayTy); - enum { LowerFD = 0, UpperFD, StrideFD }; - // Fill dims with data. - for (unsigned I = 0, E = NumIterations.size(); I < E; ++I) { - LValue DimsLVal = - CGF.MakeAddrLValue(CGF.Builder.CreateConstArrayGEP( - DimsAddr, I, C.getTypeSizeInChars(KmpDimTy)), - KmpDimTy); - // dims.upper = num_iterations; - LValue UpperLVal = CGF.EmitLValueForField( - DimsLVal, *std::next(RD->field_begin(), UpperFD)); - llvm::Value *NumIterVal = - CGF.EmitScalarConversion(CGF.EmitScalarExpr(NumIterations[I]), - D.getNumIterations()->getType(), Int64Ty, - D.getNumIterations()->getExprLoc()); - CGF.EmitStoreOfScalar(NumIterVal, UpperLVal); - // dims.stride = 1; - LValue StrideLVal = CGF.EmitLValueForField( - DimsLVal, *std::next(RD->field_begin(), StrideFD)); - CGF.EmitStoreOfScalar(llvm::ConstantInt::getSigned(CGM.Int64Ty, /*V=*/1), - StrideLVal); - } - - // Build call void __kmpc_doacross_init(ident_t *loc, kmp_int32 gtid, - // kmp_int32 num_dims, struct kmp_dim * dims); - llvm::Value *Args[] = { - emitUpdateLocation(CGF, D.getBeginLoc()), - getThreadID(CGF, D.getBeginLoc()), - llvm::ConstantInt::getSigned(CGM.Int32Ty, NumIterations.size()), - CGF.Builder.CreatePointerBitCastOrAddrSpaceCast( - CGF.Builder - .CreateConstArrayGEP(DimsAddr, 0, C.getTypeSizeInChars(KmpDimTy)) - .getPointer(), - CGM.VoidPtrTy)}; - - llvm::Value *RTLFn = createRuntimeFunction(OMPRTL__kmpc_doacross_init); - CGF.EmitRuntimeCall(RTLFn, Args); - llvm::Value *FiniArgs[DoacrossCleanupTy::DoacrossFinArgs] = { - emitUpdateLocation(CGF, D.getEndLoc()), getThreadID(CGF, D.getEndLoc())}; - llvm::Value *FiniRTLFn = createRuntimeFunction(OMPRTL__kmpc_doacross_fini); - CGF.EHStack.pushCleanup<DoacrossCleanupTy>(NormalAndEHCleanup, FiniRTLFn, - llvm::makeArrayRef(FiniArgs)); -} - -void CGOpenMPRuntime::emitDoacrossOrdered(CodeGenFunction &CGF, - const OMPDependClause *C) { - QualType Int64Ty = - CGM.getContext().getIntTypeForBitwidth(/*DestWidth=*/64, /*Signed=*/1); - llvm::APInt Size(/*numBits=*/32, C->getNumLoops()); - QualType ArrayTy = CGM.getContext().getConstantArrayType( - Int64Ty, Size, ArrayType::Normal, 0); - Address CntAddr = CGF.CreateMemTemp(ArrayTy, ".cnt.addr"); - for (unsigned I = 0, E = C->getNumLoops(); I < E; ++I) { - const Expr *CounterVal = C->getLoopData(I); - assert(CounterVal); - llvm::Value *CntVal = CGF.EmitScalarConversion( - CGF.EmitScalarExpr(CounterVal), CounterVal->getType(), Int64Ty, - CounterVal->getExprLoc()); - CGF.EmitStoreOfScalar( - CntVal, - CGF.Builder.CreateConstArrayGEP( - CntAddr, I, CGM.getContext().getTypeSizeInChars(Int64Ty)), - /*Volatile=*/false, Int64Ty); - } - llvm::Value *Args[] = { - emitUpdateLocation(CGF, C->getBeginLoc()), - getThreadID(CGF, C->getBeginLoc()), - CGF.Builder - .CreateConstArrayGEP(CntAddr, 0, - CGM.getContext().getTypeSizeInChars(Int64Ty)) - .getPointer()}; - llvm::Value *RTLFn; - if (C->getDependencyKind() == OMPC_DEPEND_source) { - RTLFn = createRuntimeFunction(OMPRTL__kmpc_doacross_post); - } else { - assert(C->getDependencyKind() == OMPC_DEPEND_sink); - RTLFn = createRuntimeFunction(OMPRTL__kmpc_doacross_wait); - } - CGF.EmitRuntimeCall(RTLFn, Args); -} - -void CGOpenMPRuntime::emitCall(CodeGenFunction &CGF, SourceLocation Loc, - llvm::Value *Callee, - ArrayRef<llvm::Value *> Args) const { - assert(Loc.isValid() && "Outlined function call location must be valid."); - auto DL = ApplyDebugLocation::CreateDefaultArtificial(CGF, Loc); - - if (auto *Fn = dyn_cast<llvm::Function>(Callee)) { - if (Fn->doesNotThrow()) { - CGF.EmitNounwindRuntimeCall(Fn, Args); - return; - } - } - CGF.EmitRuntimeCall(Callee, Args); -} - -void CGOpenMPRuntime::emitOutlinedFunctionCall( - CodeGenFunction &CGF, SourceLocation Loc, llvm::Value *OutlinedFn, - ArrayRef<llvm::Value *> Args) const { - emitCall(CGF, Loc, OutlinedFn, Args); -} - -Address CGOpenMPRuntime::getParameterAddress(CodeGenFunction &CGF, - const VarDecl *NativeParam, - const VarDecl *TargetParam) const { - return CGF.GetAddrOfLocalVar(NativeParam); -} - -Address CGOpenMPRuntime::getAddressOfLocalVariable(CodeGenFunction &CGF, - const VarDecl *VD) { - return Address::invalid(); -} - -llvm::Value *CGOpenMPSIMDRuntime::emitParallelOutlinedFunction( - const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, - OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -llvm::Value *CGOpenMPSIMDRuntime::emitTeamsOutlinedFunction( - const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, - OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -llvm::Value *CGOpenMPSIMDRuntime::emitTaskOutlinedFunction( - const OMPExecutableDirective &D, const VarDecl *ThreadIDVar, - const VarDecl *PartIDVar, const VarDecl *TaskTVar, - OpenMPDirectiveKind InnermostKind, const RegionCodeGenTy &CodeGen, - bool Tied, unsigned &NumberOfParts) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitParallelCall(CodeGenFunction &CGF, - SourceLocation Loc, - llvm::Value *OutlinedFn, - ArrayRef<llvm::Value *> CapturedVars, - const Expr *IfCond) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitCriticalRegion( - CodeGenFunction &CGF, StringRef CriticalName, - const RegionCodeGenTy &CriticalOpGen, SourceLocation Loc, - const Expr *Hint) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitMasterRegion(CodeGenFunction &CGF, - const RegionCodeGenTy &MasterOpGen, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTaskyieldCall(CodeGenFunction &CGF, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTaskgroupRegion( - CodeGenFunction &CGF, const RegionCodeGenTy &TaskgroupOpGen, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitSingleRegion( - CodeGenFunction &CGF, const RegionCodeGenTy &SingleOpGen, - SourceLocation Loc, ArrayRef<const Expr *> CopyprivateVars, - ArrayRef<const Expr *> DestExprs, ArrayRef<const Expr *> SrcExprs, - ArrayRef<const Expr *> AssignmentOps) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitOrderedRegion(CodeGenFunction &CGF, - const RegionCodeGenTy &OrderedOpGen, - SourceLocation Loc, - bool IsThreads) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitBarrierCall(CodeGenFunction &CGF, - SourceLocation Loc, - OpenMPDirectiveKind Kind, - bool EmitChecks, - bool ForceSimpleCall) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitForDispatchInit( - CodeGenFunction &CGF, SourceLocation Loc, - const OpenMPScheduleTy &ScheduleKind, unsigned IVSize, bool IVSigned, - bool Ordered, const DispatchRTInput &DispatchValues) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitForStaticInit( - CodeGenFunction &CGF, SourceLocation Loc, OpenMPDirectiveKind DKind, - const OpenMPScheduleTy &ScheduleKind, const StaticRTInput &Values) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitDistributeStaticInit( - CodeGenFunction &CGF, SourceLocation Loc, - OpenMPDistScheduleClauseKind SchedKind, const StaticRTInput &Values) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitForOrderedIterationEnd(CodeGenFunction &CGF, - SourceLocation Loc, - unsigned IVSize, - bool IVSigned) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitForStaticFinish(CodeGenFunction &CGF, - SourceLocation Loc, - OpenMPDirectiveKind DKind) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -llvm::Value *CGOpenMPSIMDRuntime::emitForNext(CodeGenFunction &CGF, - SourceLocation Loc, - unsigned IVSize, bool IVSigned, - Address IL, Address LB, - Address UB, Address ST) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitNumThreadsClause(CodeGenFunction &CGF, - llvm::Value *NumThreads, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitProcBindClause(CodeGenFunction &CGF, - OpenMPProcBindClauseKind ProcBind, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -Address CGOpenMPSIMDRuntime::getAddrOfThreadPrivate(CodeGenFunction &CGF, - const VarDecl *VD, - Address VDAddr, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -llvm::Function *CGOpenMPSIMDRuntime::emitThreadPrivateVarDefinition( - const VarDecl *VD, Address VDAddr, SourceLocation Loc, bool PerformInit, - CodeGenFunction *CGF) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -Address CGOpenMPSIMDRuntime::getAddrOfArtificialThreadPrivate( - CodeGenFunction &CGF, QualType VarType, StringRef Name) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitFlush(CodeGenFunction &CGF, - ArrayRef<const Expr *> Vars, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTaskCall(CodeGenFunction &CGF, SourceLocation Loc, - const OMPExecutableDirective &D, - llvm::Value *TaskFunction, - QualType SharedsTy, Address Shareds, - const Expr *IfCond, - const OMPTaskDataTy &Data) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTaskLoopCall( - CodeGenFunction &CGF, SourceLocation Loc, const OMPLoopDirective &D, - llvm::Value *TaskFunction, QualType SharedsTy, Address Shareds, - const Expr *IfCond, const OMPTaskDataTy &Data) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitReduction( - CodeGenFunction &CGF, SourceLocation Loc, ArrayRef<const Expr *> Privates, - ArrayRef<const Expr *> LHSExprs, ArrayRef<const Expr *> RHSExprs, - ArrayRef<const Expr *> ReductionOps, ReductionOptionsTy Options) { - assert(Options.SimpleReduction && "Only simple reduction is expected."); - CGOpenMPRuntime::emitReduction(CGF, Loc, Privates, LHSExprs, RHSExprs, - ReductionOps, Options); -} - -llvm::Value *CGOpenMPSIMDRuntime::emitTaskReductionInit( - CodeGenFunction &CGF, SourceLocation Loc, ArrayRef<const Expr *> LHSExprs, - ArrayRef<const Expr *> RHSExprs, const OMPTaskDataTy &Data) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTaskReductionFixups(CodeGenFunction &CGF, - SourceLocation Loc, - ReductionCodeGen &RCG, - unsigned N) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -Address CGOpenMPSIMDRuntime::getTaskReductionItem(CodeGenFunction &CGF, - SourceLocation Loc, - llvm::Value *ReductionsPtr, - LValue SharedLVal) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTaskwaitCall(CodeGenFunction &CGF, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitCancellationPointCall( - CodeGenFunction &CGF, SourceLocation Loc, - OpenMPDirectiveKind CancelRegion) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitCancelCall(CodeGenFunction &CGF, - SourceLocation Loc, const Expr *IfCond, - OpenMPDirectiveKind CancelRegion) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTargetOutlinedFunction( - const OMPExecutableDirective &D, StringRef ParentName, - llvm::Function *&OutlinedFn, llvm::Constant *&OutlinedFnID, - bool IsOffloadEntry, const RegionCodeGenTy &CodeGen) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTargetCall(CodeGenFunction &CGF, - const OMPExecutableDirective &D, - llvm::Value *OutlinedFn, - llvm::Value *OutlinedFnID, - const Expr *IfCond, const Expr *Device) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -bool CGOpenMPSIMDRuntime::emitTargetFunctions(GlobalDecl GD) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -bool CGOpenMPSIMDRuntime::emitTargetGlobalVariable(GlobalDecl GD) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -bool CGOpenMPSIMDRuntime::emitTargetGlobal(GlobalDecl GD) { - return false; -} - -llvm::Function *CGOpenMPSIMDRuntime::emitRegistrationFunction() { - return nullptr; -} - -void CGOpenMPSIMDRuntime::emitTeamsCall(CodeGenFunction &CGF, - const OMPExecutableDirective &D, - SourceLocation Loc, - llvm::Value *OutlinedFn, - ArrayRef<llvm::Value *> CapturedVars) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitNumTeamsClause(CodeGenFunction &CGF, - const Expr *NumTeams, - const Expr *ThreadLimit, - SourceLocation Loc) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTargetDataCalls( - CodeGenFunction &CGF, const OMPExecutableDirective &D, const Expr *IfCond, - const Expr *Device, const RegionCodeGenTy &CodeGen, TargetDataInfo &Info) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitTargetDataStandAloneCall( - CodeGenFunction &CGF, const OMPExecutableDirective &D, const Expr *IfCond, - const Expr *Device) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitDoacrossInit(CodeGenFunction &CGF, - const OMPLoopDirective &D, - ArrayRef<Expr *> NumIterations) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -void CGOpenMPSIMDRuntime::emitDoacrossOrdered(CodeGenFunction &CGF, - const OMPDependClause *C) { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -const VarDecl * -CGOpenMPSIMDRuntime::translateParameter(const FieldDecl *FD, - const VarDecl *NativeParam) const { - llvm_unreachable("Not supported in SIMD-only mode"); -} - -Address -CGOpenMPSIMDRuntime::getParameterAddress(CodeGenFunction &CGF, - const VarDecl *NativeParam, - const VarDecl *TargetParam) const { - llvm_unreachable("Not supported in SIMD-only mode"); -} - |