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Diffstat (limited to 'gnu/llvm/tools/clang/lib/CodeGen/TargetInfo.h')
| -rw-r--r-- | gnu/llvm/tools/clang/lib/CodeGen/TargetInfo.h | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/gnu/llvm/tools/clang/lib/CodeGen/TargetInfo.h b/gnu/llvm/tools/clang/lib/CodeGen/TargetInfo.h deleted file mode 100644 index b530260ea48..00000000000 --- a/gnu/llvm/tools/clang/lib/CodeGen/TargetInfo.h +++ /dev/null @@ -1,311 +0,0 @@ -//===---- TargetInfo.h - Encapsulate target 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_TARGETINFO_H -#define LLVM_CLANG_LIB_CODEGEN_TARGETINFO_H - -#include "CodeGenModule.h" -#include "CGValue.h" -#include "clang/AST/Type.h" -#include "clang/Basic/LLVM.h" -#include "clang/Basic/SyncScope.h" -#include "llvm/ADT/SmallString.h" -#include "llvm/ADT/StringRef.h" - -namespace llvm { -class Constant; -class GlobalValue; -class Type; -class Value; -} - -namespace clang { -class Decl; - -namespace CodeGen { -class ABIInfo; -class CallArgList; -class CodeGenFunction; -class CGBlockInfo; -class CGFunctionInfo; - -/// TargetCodeGenInfo - This class organizes various target-specific -/// codegeneration issues, like target-specific attributes, builtins and so -/// on. -class TargetCodeGenInfo { - ABIInfo *Info; - -public: - // WARNING: Acquires the ownership of ABIInfo. - TargetCodeGenInfo(ABIInfo *info = nullptr) : Info(info) {} - virtual ~TargetCodeGenInfo(); - - /// getABIInfo() - Returns ABI info helper for the target. - const ABIInfo &getABIInfo() const { return *Info; } - - /// setTargetAttributes - Provides a convenient hook to handle extra - /// target-specific attributes for the given global. - virtual void setTargetAttributes(const Decl *D, llvm::GlobalValue *GV, - CodeGen::CodeGenModule &M) const {} - - /// emitTargetMD - Provides a convenient hook to handle extra - /// target-specific metadata for the given global. - virtual void emitTargetMD(const Decl *D, llvm::GlobalValue *GV, - CodeGen::CodeGenModule &M) const {} - - /// Determines the size of struct _Unwind_Exception on this platform, - /// in 8-bit units. The Itanium ABI defines this as: - /// struct _Unwind_Exception { - /// uint64 exception_class; - /// _Unwind_Exception_Cleanup_Fn exception_cleanup; - /// uint64 private_1; - /// uint64 private_2; - /// }; - virtual unsigned getSizeOfUnwindException() const; - - /// Controls whether __builtin_extend_pointer should sign-extend - /// pointers to uint64_t or zero-extend them (the default). Has - /// no effect for targets: - /// - that have 64-bit pointers, or - /// - that cannot address through registers larger than pointers, or - /// - that implicitly ignore/truncate the top bits when addressing - /// through such registers. - virtual bool extendPointerWithSExt() const { return false; } - - /// Determines the DWARF register number for the stack pointer, for - /// exception-handling purposes. Implements __builtin_dwarf_sp_column. - /// - /// Returns -1 if the operation is unsupported by this target. - virtual int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const { - return -1; - } - - /// Initializes the given DWARF EH register-size table, a char*. - /// Implements __builtin_init_dwarf_reg_size_table. - /// - /// Returns true if the operation is unsupported by this target. - virtual bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF, - llvm::Value *Address) const { - return true; - } - - /// Performs the code-generation required to convert a return - /// address as stored by the system into the actual address of the - /// next instruction that will be executed. - /// - /// Used by __builtin_extract_return_addr(). - virtual llvm::Value *decodeReturnAddress(CodeGen::CodeGenFunction &CGF, - llvm::Value *Address) const { - return Address; - } - - /// Performs the code-generation required to convert the address - /// of an instruction into a return address suitable for storage - /// by the system in a return slot. - /// - /// Used by __builtin_frob_return_addr(). - virtual llvm::Value *encodeReturnAddress(CodeGen::CodeGenFunction &CGF, - llvm::Value *Address) const { - return Address; - } - - /// Corrects the low-level LLVM type for a given constraint and "usual" - /// type. - /// - /// \returns A pointer to a new LLVM type, possibly the same as the original - /// on success; 0 on failure. - virtual llvm::Type *adjustInlineAsmType(CodeGen::CodeGenFunction &CGF, - StringRef Constraint, - llvm::Type *Ty) const { - return Ty; - } - - /// Adds constraints and types for result registers. - virtual void addReturnRegisterOutputs( - CodeGen::CodeGenFunction &CGF, CodeGen::LValue ReturnValue, - std::string &Constraints, std::vector<llvm::Type *> &ResultRegTypes, - std::vector<llvm::Type *> &ResultTruncRegTypes, - std::vector<CodeGen::LValue> &ResultRegDests, std::string &AsmString, - unsigned NumOutputs) const {} - - /// doesReturnSlotInterfereWithArgs - Return true if the target uses an - /// argument slot for an 'sret' type. - virtual bool doesReturnSlotInterfereWithArgs() const { return true; } - - /// Retrieve the address of a function to call immediately before - /// calling objc_retainAutoreleasedReturnValue. The - /// implementation of objc_autoreleaseReturnValue sniffs the - /// instruction stream following its return address to decide - /// whether it's a call to objc_retainAutoreleasedReturnValue. - /// This can be prohibitively expensive, depending on the - /// relocation model, and so on some targets it instead sniffs for - /// a particular instruction sequence. This functions returns - /// that instruction sequence in inline assembly, which will be - /// empty if none is required. - virtual StringRef getARCRetainAutoreleasedReturnValueMarker() const { - return ""; - } - - /// Return a constant used by UBSan as a signature to identify functions - /// possessing type information, or 0 if the platform is unsupported. - virtual llvm::Constant * - getUBSanFunctionSignature(CodeGen::CodeGenModule &CGM) const { - return nullptr; - } - - /// Determine whether a call to an unprototyped functions under - /// the given calling convention should use the variadic - /// convention or the non-variadic convention. - /// - /// There's a good reason to make a platform's variadic calling - /// convention be different from its non-variadic calling - /// convention: the non-variadic arguments can be passed in - /// registers (better for performance), and the variadic arguments - /// can be passed on the stack (also better for performance). If - /// this is done, however, unprototyped functions *must* use the - /// non-variadic convention, because C99 states that a call - /// through an unprototyped function type must succeed if the - /// function was defined with a non-variadic prototype with - /// compatible parameters. Therefore, splitting the conventions - /// makes it impossible to call a variadic function through an - /// unprototyped type. Since function prototypes came out in the - /// late 1970s, this is probably an acceptable trade-off. - /// Nonetheless, not all platforms are willing to make it, and in - /// particularly x86-64 bends over backwards to make the - /// conventions compatible. - /// - /// The default is false. This is correct whenever: - /// - the conventions are exactly the same, because it does not - /// matter and the resulting IR will be somewhat prettier in - /// certain cases; or - /// - the conventions are substantively different in how they pass - /// arguments, because in this case using the variadic convention - /// will lead to C99 violations. - /// - /// However, some platforms make the conventions identical except - /// for passing additional out-of-band information to a variadic - /// function: for example, x86-64 passes the number of SSE - /// arguments in %al. On these platforms, it is desirable to - /// call unprototyped functions using the variadic convention so - /// that unprototyped calls to varargs functions still succeed. - /// - /// Relatedly, platforms which pass the fixed arguments to this: - /// A foo(B, C, D); - /// differently than they would pass them to this: - /// A foo(B, C, D, ...); - /// may need to adjust the debugger-support code in Sema to do the - /// right thing when calling a function with no know signature. - virtual bool isNoProtoCallVariadic(const CodeGen::CallArgList &args, - const FunctionNoProtoType *fnType) const; - - /// Gets the linker options necessary to link a dependent library on this - /// platform. - virtual void getDependentLibraryOption(llvm::StringRef Lib, - llvm::SmallString<24> &Opt) const; - - /// Gets the linker options necessary to detect object file mismatches on - /// this platform. - virtual void getDetectMismatchOption(llvm::StringRef Name, - llvm::StringRef Value, - llvm::SmallString<32> &Opt) const {} - - /// Get LLVM calling convention for OpenCL kernel. - virtual unsigned getOpenCLKernelCallingConv() const; - - /// Get target specific null pointer. - /// \param T is the LLVM type of the null pointer. - /// \param QT is the clang QualType of the null pointer. - /// \return ConstantPointerNull with the given type \p T. - /// Each target can override it to return its own desired constant value. - virtual llvm::Constant *getNullPointer(const CodeGen::CodeGenModule &CGM, - llvm::PointerType *T, QualType QT) const; - - /// Get target favored AST address space of a global variable for languages - /// other than OpenCL and CUDA. - /// If \p D is nullptr, returns the default target favored address space - /// for global variable. - virtual LangAS getGlobalVarAddressSpace(CodeGenModule &CGM, - const VarDecl *D) const; - - /// Get the AST address space for alloca. - virtual LangAS getASTAllocaAddressSpace() const { return LangAS::Default; } - - /// Perform address space cast of an expression of pointer type. - /// \param V is the LLVM value to be casted to another address space. - /// \param SrcAddr is the language address space of \p V. - /// \param DestAddr is the targeted language address space. - /// \param DestTy is the destination LLVM pointer type. - /// \param IsNonNull is the flag indicating \p V is known to be non null. - virtual llvm::Value *performAddrSpaceCast(CodeGen::CodeGenFunction &CGF, - llvm::Value *V, LangAS SrcAddr, - LangAS DestAddr, llvm::Type *DestTy, - bool IsNonNull = false) const; - - /// Perform address space cast of a constant expression of pointer type. - /// \param V is the LLVM constant to be casted to another address space. - /// \param SrcAddr is the language address space of \p V. - /// \param DestAddr is the targeted language address space. - /// \param DestTy is the destination LLVM pointer type. - virtual llvm::Constant *performAddrSpaceCast(CodeGenModule &CGM, - llvm::Constant *V, - LangAS SrcAddr, LangAS DestAddr, - llvm::Type *DestTy) const; - - /// Get the syncscope used in LLVM IR. - virtual llvm::SyncScope::ID getLLVMSyncScopeID(SyncScope S, - llvm::LLVMContext &C) const; - - /// Interface class for filling custom fields of a block literal for OpenCL. - class TargetOpenCLBlockHelper { - public: - typedef std::pair<llvm::Value *, StringRef> ValueTy; - TargetOpenCLBlockHelper() {} - virtual ~TargetOpenCLBlockHelper() {} - /// Get the custom field types for OpenCL blocks. - virtual llvm::SmallVector<llvm::Type *, 1> getCustomFieldTypes() = 0; - /// Get the custom field values for OpenCL blocks. - virtual llvm::SmallVector<ValueTy, 1> - getCustomFieldValues(CodeGenFunction &CGF, const CGBlockInfo &Info) = 0; - virtual bool areAllCustomFieldValuesConstant(const CGBlockInfo &Info) = 0; - /// Get the custom field values for OpenCL blocks if all values are LLVM - /// constants. - virtual llvm::SmallVector<llvm::Constant *, 1> - getCustomFieldValues(CodeGenModule &CGM, const CGBlockInfo &Info) = 0; - }; - virtual TargetOpenCLBlockHelper *getTargetOpenCLBlockHelper() const { - return nullptr; - } - - /// Create an OpenCL kernel for an enqueued block. The kernel function is - /// a wrapper for the block invoke function with target-specific calling - /// convention and ABI as an OpenCL kernel. The wrapper function accepts - /// block context and block arguments in target-specific way and calls - /// the original block invoke function. - virtual llvm::Function * - createEnqueuedBlockKernel(CodeGenFunction &CGF, - llvm::Function *BlockInvokeFunc, - llvm::Value *BlockLiteral) const; - - /// \return true if the target supports alias from the unmangled name to the - /// mangled name of functions declared within an extern "C" region and marked - /// as 'used', and having internal linkage. - virtual bool shouldEmitStaticExternCAliases() const { return true; } - - virtual void setCUDAKernelCallingConvention(const FunctionType *&FT) const {} -}; - -} // namespace CodeGen -} // namespace clang - -#endif // LLVM_CLANG_LIB_CODEGEN_TARGETINFO_H |