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diff --git a/gnu/llvm/tools/clang/lib/CodeGen/CGCall.h b/gnu/llvm/tools/clang/lib/CodeGen/CGCall.h
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--- a/gnu/llvm/tools/clang/lib/CodeGen/CGCall.h
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-//===----- CGCall.h - Encapsulate calling convention details ----*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// These classes wrap the information about a call or function
-// definition used to handle ABI compliancy.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_LIB_CODEGEN_CGCALL_H
-#define LLVM_CLANG_LIB_CODEGEN_CGCALL_H
-
-#include "CGValue.h"
-#include "EHScopeStack.h"
-#include "clang/AST/CanonicalType.h"
-#include "clang/AST/GlobalDecl.h"
-#include "clang/AST/Type.h"
-#include "llvm/IR/Value.h"
-
-// FIXME: Restructure so we don't have to expose so much stuff.
-#include "ABIInfo.h"
-
-namespace llvm {
-class AttributeList;
-class Function;
-class Type;
-class Value;
-}
-
-namespace clang {
- class ASTContext;
- class Decl;
- class FunctionDecl;
- class ObjCMethodDecl;
- class VarDecl;
-
-namespace CodeGen {
-
-/// Abstract information about a function or function prototype.
-class CGCalleeInfo {
- /// The function prototype of the callee.
- const FunctionProtoType *CalleeProtoTy;
- /// The function declaration of the callee.
- GlobalDecl CalleeDecl;
-
-public:
- explicit CGCalleeInfo() : CalleeProtoTy(nullptr), CalleeDecl() {}
- CGCalleeInfo(const FunctionProtoType *calleeProtoTy, GlobalDecl calleeDecl)
- : CalleeProtoTy(calleeProtoTy), CalleeDecl(calleeDecl) {}
- CGCalleeInfo(const FunctionProtoType *calleeProtoTy)
- : CalleeProtoTy(calleeProtoTy), CalleeDecl() {}
- CGCalleeInfo(GlobalDecl calleeDecl)
- : CalleeProtoTy(nullptr), CalleeDecl(calleeDecl) {}
-
- const FunctionProtoType *getCalleeFunctionProtoType() const {
- return CalleeProtoTy;
- }
- const GlobalDecl getCalleeDecl() const { return CalleeDecl; }
- };
-
- /// All available information about a concrete callee.
- class CGCallee {
- enum class SpecialKind : uintptr_t {
- Invalid,
- Builtin,
- PseudoDestructor,
- Virtual,
-
- Last = Virtual
- };
-
- struct BuiltinInfoStorage {
- const FunctionDecl *Decl;
- unsigned ID;
- };
- struct PseudoDestructorInfoStorage {
- const CXXPseudoDestructorExpr *Expr;
- };
- struct VirtualInfoStorage {
- const CallExpr *CE;
- GlobalDecl MD;
- Address Addr;
- llvm::FunctionType *FTy;
- };
-
- SpecialKind KindOrFunctionPointer;
- union {
- CGCalleeInfo AbstractInfo;
- BuiltinInfoStorage BuiltinInfo;
- PseudoDestructorInfoStorage PseudoDestructorInfo;
- VirtualInfoStorage VirtualInfo;
- };
-
- explicit CGCallee(SpecialKind kind) : KindOrFunctionPointer(kind) {}
-
- CGCallee(const FunctionDecl *builtinDecl, unsigned builtinID)
- : KindOrFunctionPointer(SpecialKind::Builtin) {
- BuiltinInfo.Decl = builtinDecl;
- BuiltinInfo.ID = builtinID;
- }
-
- public:
- CGCallee() : KindOrFunctionPointer(SpecialKind::Invalid) {}
-
- /// Construct a callee. Call this constructor directly when this
- /// isn't a direct call.
- CGCallee(const CGCalleeInfo &abstractInfo, llvm::Value *functionPtr)
- : KindOrFunctionPointer(SpecialKind(uintptr_t(functionPtr))) {
- AbstractInfo = abstractInfo;
- assert(functionPtr && "configuring callee without function pointer");
- assert(functionPtr->getType()->isPointerTy());
- assert(functionPtr->getType()->getPointerElementType()->isFunctionTy());
- }
-
- static CGCallee forBuiltin(unsigned builtinID,
- const FunctionDecl *builtinDecl) {
- CGCallee result(SpecialKind::Builtin);
- result.BuiltinInfo.Decl = builtinDecl;
- result.BuiltinInfo.ID = builtinID;
- return result;
- }
-
- static CGCallee forPseudoDestructor(const CXXPseudoDestructorExpr *E) {
- CGCallee result(SpecialKind::PseudoDestructor);
- result.PseudoDestructorInfo.Expr = E;
- return result;
- }
-
- static CGCallee forDirect(llvm::Constant *functionPtr,
- const CGCalleeInfo &abstractInfo = CGCalleeInfo()) {
- return CGCallee(abstractInfo, functionPtr);
- }
-
- static CGCallee forVirtual(const CallExpr *CE, GlobalDecl MD, Address Addr,
- llvm::FunctionType *FTy) {
- CGCallee result(SpecialKind::Virtual);
- result.VirtualInfo.CE = CE;
- result.VirtualInfo.MD = MD;
- result.VirtualInfo.Addr = Addr;
- result.VirtualInfo.FTy = FTy;
- return result;
- }
-
- bool isBuiltin() const {
- return KindOrFunctionPointer == SpecialKind::Builtin;
- }
- const FunctionDecl *getBuiltinDecl() const {
- assert(isBuiltin());
- return BuiltinInfo.Decl;
- }
- unsigned getBuiltinID() const {
- assert(isBuiltin());
- return BuiltinInfo.ID;
- }
-
- bool isPseudoDestructor() const {
- return KindOrFunctionPointer == SpecialKind::PseudoDestructor;
- }
- const CXXPseudoDestructorExpr *getPseudoDestructorExpr() const {
- assert(isPseudoDestructor());
- return PseudoDestructorInfo.Expr;
- }
-
- bool isOrdinary() const {
- return uintptr_t(KindOrFunctionPointer) > uintptr_t(SpecialKind::Last);
- }
- CGCalleeInfo getAbstractInfo() const {
- if (isVirtual())
- return VirtualInfo.MD;
- assert(isOrdinary());
- return AbstractInfo;
- }
- llvm::Value *getFunctionPointer() const {
- assert(isOrdinary());
- return reinterpret_cast<llvm::Value*>(uintptr_t(KindOrFunctionPointer));
- }
- void setFunctionPointer(llvm::Value *functionPtr) {
- assert(isOrdinary());
- KindOrFunctionPointer = SpecialKind(uintptr_t(functionPtr));
- }
-
- bool isVirtual() const {
- return KindOrFunctionPointer == SpecialKind::Virtual;
- }
- const CallExpr *getVirtualCallExpr() const {
- assert(isVirtual());
- return VirtualInfo.CE;
- }
- GlobalDecl getVirtualMethodDecl() const {
- assert(isVirtual());
- return VirtualInfo.MD;
- }
- Address getThisAddress() const {
- assert(isVirtual());
- return VirtualInfo.Addr;
- }
-
- llvm::FunctionType *getFunctionType() const {
- if (isVirtual())
- return VirtualInfo.FTy;
- return cast<llvm::FunctionType>(
- getFunctionPointer()->getType()->getPointerElementType());
- }
-
- /// If this is a delayed callee computation of some sort, prepare
- /// a concrete callee.
- CGCallee prepareConcreteCallee(CodeGenFunction &CGF) const;
- };
-
- struct CallArg {
- private:
- union {
- RValue RV;
- LValue LV; /// The argument is semantically a load from this l-value.
- };
- bool HasLV;
-
- /// A data-flow flag to make sure getRValue and/or copyInto are not
- /// called twice for duplicated IR emission.
- mutable bool IsUsed;
-
- public:
- QualType Ty;
- CallArg(RValue rv, QualType ty)
- : RV(rv), HasLV(false), IsUsed(false), Ty(ty) {}
- CallArg(LValue lv, QualType ty)
- : LV(lv), HasLV(true), IsUsed(false), Ty(ty) {}
- bool hasLValue() const { return HasLV; }
- QualType getType() const { return Ty; }
-
- /// \returns an independent RValue. If the CallArg contains an LValue,
- /// a temporary copy is returned.
- RValue getRValue(CodeGenFunction &CGF) const;
-
- LValue getKnownLValue() const {
- assert(HasLV && !IsUsed);
- return LV;
- }
- RValue getKnownRValue() const {
- assert(!HasLV && !IsUsed);
- return RV;
- }
- void setRValue(RValue _RV) {
- assert(!HasLV);
- RV = _RV;
- }
-
- bool isAggregate() const { return HasLV || RV.isAggregate(); }
-
- void copyInto(CodeGenFunction &CGF, Address A) const;
- };
-
- /// CallArgList - Type for representing both the value and type of
- /// arguments in a call.
- class CallArgList :
- public SmallVector<CallArg, 8> {
- public:
- CallArgList() : StackBase(nullptr) {}
-
- struct Writeback {
- /// The original argument. Note that the argument l-value
- /// is potentially null.
- LValue Source;
-
- /// The temporary alloca.
- Address Temporary;
-
- /// A value to "use" after the writeback, or null.
- llvm::Value *ToUse;
- };
-
- struct CallArgCleanup {
- EHScopeStack::stable_iterator Cleanup;
-
- /// The "is active" insertion point. This instruction is temporary and
- /// will be removed after insertion.
- llvm::Instruction *IsActiveIP;
- };
-
- void add(RValue rvalue, QualType type) { push_back(CallArg(rvalue, type)); }
-
- void addUncopiedAggregate(LValue LV, QualType type) {
- push_back(CallArg(LV, type));
- }
-
- /// Add all the arguments from another CallArgList to this one. After doing
- /// this, the old CallArgList retains its list of arguments, but must not
- /// be used to emit a call.
- void addFrom(const CallArgList &other) {
- insert(end(), other.begin(), other.end());
- Writebacks.insert(Writebacks.end(),
- other.Writebacks.begin(), other.Writebacks.end());
- CleanupsToDeactivate.insert(CleanupsToDeactivate.end(),
- other.CleanupsToDeactivate.begin(),
- other.CleanupsToDeactivate.end());
- assert(!(StackBase && other.StackBase) && "can't merge stackbases");
- if (!StackBase)
- StackBase = other.StackBase;
- }
-
- void addWriteback(LValue srcLV, Address temporary,
- llvm::Value *toUse) {
- Writeback writeback = { srcLV, temporary, toUse };
- Writebacks.push_back(writeback);
- }
-
- bool hasWritebacks() const { return !Writebacks.empty(); }
-
- typedef llvm::iterator_range<SmallVectorImpl<Writeback>::const_iterator>
- writeback_const_range;
-
- writeback_const_range writebacks() const {
- return writeback_const_range(Writebacks.begin(), Writebacks.end());
- }
-
- void addArgCleanupDeactivation(EHScopeStack::stable_iterator Cleanup,
- llvm::Instruction *IsActiveIP) {
- CallArgCleanup ArgCleanup;
- ArgCleanup.Cleanup = Cleanup;
- ArgCleanup.IsActiveIP = IsActiveIP;
- CleanupsToDeactivate.push_back(ArgCleanup);
- }
-
- ArrayRef<CallArgCleanup> getCleanupsToDeactivate() const {
- return CleanupsToDeactivate;
- }
-
- void allocateArgumentMemory(CodeGenFunction &CGF);
- llvm::Instruction *getStackBase() const { return StackBase; }
- void freeArgumentMemory(CodeGenFunction &CGF) const;
-
- /// Returns if we're using an inalloca struct to pass arguments in
- /// memory.
- bool isUsingInAlloca() const { return StackBase; }
-
- private:
- SmallVector<Writeback, 1> Writebacks;
-
- /// Deactivate these cleanups immediately before making the call. This
- /// is used to cleanup objects that are owned by the callee once the call
- /// occurs.
- SmallVector<CallArgCleanup, 1> CleanupsToDeactivate;
-
- /// The stacksave call. It dominates all of the argument evaluation.
- llvm::CallInst *StackBase;
- };
-
- /// FunctionArgList - Type for representing both the decl and type
- /// of parameters to a function. The decl must be either a
- /// ParmVarDecl or ImplicitParamDecl.
- class FunctionArgList : public SmallVector<const VarDecl*, 16> {
- };
-
- /// ReturnValueSlot - Contains the address where the return value of a
- /// function can be stored, and whether the address is volatile or not.
- class ReturnValueSlot {
- llvm::PointerIntPair<llvm::Value *, 2, unsigned int> Value;
- CharUnits Alignment;
-
- // Return value slot flags
- enum Flags {
- IS_VOLATILE = 0x1,
- IS_UNUSED = 0x2,
- };
-
- public:
- ReturnValueSlot() {}
- ReturnValueSlot(Address Addr, bool IsVolatile, bool IsUnused = false)
- : Value(Addr.isValid() ? Addr.getPointer() : nullptr,
- (IsVolatile ? IS_VOLATILE : 0) | (IsUnused ? IS_UNUSED : 0)),
- Alignment(Addr.isValid() ? Addr.getAlignment() : CharUnits::Zero()) {}
-
- bool isNull() const { return !getValue().isValid(); }
-
- bool isVolatile() const { return Value.getInt() & IS_VOLATILE; }
- Address getValue() const { return Address(Value.getPointer(), Alignment); }
- bool isUnused() const { return Value.getInt() & IS_UNUSED; }
- };
-
-} // end namespace CodeGen
-} // end namespace clang
-
-#endif
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