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 X86Subtarget; 27 class X86RegisterBankInfo; 28 class TargetTransformInfo; 29 30 class X86TargetMachine final : public LLVMTargetMachine { 31 std::unique_ptr<TargetLoweringObjectFile> TLOF; 32 mutable StringMap<std::unique_ptr<X86Subtarget>> SubtargetMap; 33 // True if this is used in JIT. 34 bool IsJIT; 35 36 public: 37 X86TargetMachine(const Target &T, const Triple &TT, StringRef CPU, 38 StringRef FS, const TargetOptions &Options, 39 Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM, 40 CodeGenOpt::Level OL, bool JIT); 41 ~X86TargetMachine() override; 42 43 const X86Subtarget *getSubtargetImpl(const Function &F) const override; 44 // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget, 45 // subtargets are per-function entities based on the target-specific 46 // attributes of each function. 47 const X86Subtarget *getSubtargetImpl() const = delete; 48 49 TargetTransformInfo getTargetTransformInfo(const Function &F) override; 50 51 // Set up the pass pipeline. 52 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 53 54 TargetLoweringObjectFile *getObjFileLowering() const override { 55 return TLOF.get(); 56 } 57 58 bool isJIT() const { return IsJIT; } 59 }; 60 61 } // end namespace llvm 62 63 #endif // LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 64