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/StringMap.h" 18 #include "llvm/Support/CodeGen.h" 19 #include "llvm/Target/TargetMachine.h" 20 #include <memory> 21 #include <optional> 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 std::optional<Reloc::Model> RM, 38 std::optional<CodeModel::Model> CM, CodeGenOptLevel OL, 39 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) const override; 49 50 // Set up the pass pipeline. 51 TargetPassConfig *createPassConfig(PassManagerBase &PM) override; 52 53 TargetLoweringObjectFile *getObjFileLowering() const override { 54 return TLOF.get(); 55 } 56 57 MachineFunctionInfo * 58 createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F, 59 const TargetSubtargetInfo *STI) const override; 60 61 Error buildCodeGenPipeline(ModulePassManager &, MachineFunctionPassManager &, 62 MachineFunctionAnalysisManager &, 63 raw_pwrite_stream &, raw_pwrite_stream *, 64 CodeGenFileType, CGPassBuilderOption, 65 PassInstrumentationCallbacks *) override; 66 67 bool isJIT() const { return IsJIT; } 68 69 bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override; 70 }; 71 72 } // end namespace llvm 73 74 #endif // LLVM_LIB_TARGET_X86_X86TARGETMACHINE_H 75