llvm/lib/Target/X86/X86TargetMachine.h

   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) 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