1 //===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file declares the X86 specific subclass of TargetMachine. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 14 #define LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 15 16 #include "X86Subtarget.h" 17 #include "llvm/ADT/Optional.h" 18 #include "llvm/ADT/StringMap.h" 19 #include "llvm/Support/CodeGen.h" 20 #include "llvm/Target/TargetMachine.h" 21 #include <memory> 22 23 namespace llvm { 24 25 class StringRef; 26 class TargetTransformInfo; 27 28 class X86TargetMachine final : public LLVMTargetMachine { 29 std::unique_ptr<TargetLoweringObjectFile> TLOF; 30 mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap; 31 // True if this is used in JIT. 32 bool IsJIT; 33 34 public: 35 X86TargetMachine(const Target &T, const Triple &TT, StringRef CPU, 36 StringRef FS, const TargetOptions &Options, 37 Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM, 38 CodeGenOpt::Level OL, bool JIT); 39 ~X86TargetMachine() override; 40 41 const X86Subtarget *getSubtargetImpl(const Function &F) const override; 42 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget, 43 // subtargets are per-function entities based on the target-specific 44 // attributes of each function. 45 const X86Subtarget *getSubtargetImpl() const = delete; 46 47 TargetTransformInfo getTargetTransformInfo(const Function &F) const override; 48 49 // Set up the pass pipeline. 50 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 51 52 TargetLoweringObjectFile *getObjFileLowering() const override { 53 return TLOF.get(); 54 } 55 56 bool isJIT() const { return IsJIT; } 57 58 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override; 59 }; 60 61 } // end namespace llvm 62 63 #endif // LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 64