1 //===-- X86TargetMachine.h - Define TargetMachine for the X86 ---*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file declares the X86 specific subclass of TargetMachine. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 15 #define LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 16 17 #include "X86Subtarget.h" 18 #include "llvm/ADT/Optional.h" 19 #include "llvm/ADT/StringMap.h" 20 #include "llvm/Analysis/TargetTransformInfo.h" 21 #include "llvm/Support/CodeGen.h" 22 #include "llvm/Target/TargetMachine.h" 23 #include <memory> 24 25 namespace llvm { 26 27 class StringRef; 28 class X86Subtarget; 29 class X86RegisterBankInfo; 30 31 class X86TargetMachine final : public LLVMTargetMachine { 32 std::unique_ptr<TargetLoweringObjectFile> TLOF; 33 mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap; 34 35 public: 36 X86TargetMachine(const Target &T, const Triple &TT, StringRef CPU, 37 StringRef FS, const TargetOptions &Options, 38 Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM, 39 CodeGenOpt::Level OL, bool JIT); 40 ~X86TargetMachine() override; 41 42 const X86Subtarget *getSubtargetImpl(const Function &F) const override; 43 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget, 44 // subtargets are per-function entities based on the target-specific 45 // attributes of each function. 46 const X86Subtarget *getSubtargetImpl() const = delete; 47 48 TargetTransformInfo getTargetTransformInfo(const Function &F) override; 49 50 // Set up the pass pipeline. 51 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 52 getObjFileLowering()53 TargetLoweringObjectFile *getObjFileLowering() const override { 54 return TLOF.get(); 55 } 56 isMachineVerifierClean()57 bool isMachineVerifierClean() const override { 58 return false; 59 } 60 }; 61 62 } // end namespace llvm 63 64 #endif // LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 65