llvm/lib/Target/RISCV/RISCVTargetMachine.h

   1 //===-- RISCVTargetMachine.h - Define TargetMachine for RISC-V --*- 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 RISC-V specific subclass of TargetMachine.
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 #ifndef LLVM_LIB_TARGET_RISCV_RISCVTARGETMACHINE_H
  14 #define LLVM_LIB_TARGET_RISCV_RISCVTARGETMACHINE_H
  15
  16 #include "MCTargetDesc/RISCVMCTargetDesc.h"
  17 #include "RISCVSubtarget.h"
  18 #include "llvm/CodeGen/SelectionDAGTargetInfo.h"
  19 #include "llvm/IR/DataLayout.h"
  20 #include "llvm/Target/TargetMachine.h"
  21 #include <optional>
  22
  23 namespace llvm {
  24 class RISCVTargetMachine : public LLVMTargetMachine {
  25   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  26   mutable StringMap<std::unique_ptr<RISCVSubtarget>> SubtargetMap;
  27
  28 public:
  29   RISCVTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  30                      StringRef FS, const TargetOptions &Options,
  31                      std::optional<Reloc::Model> RM,
  32                      std::optional<CodeModel::Model> CM, CodeGenOptLevel OL,
  33                      bool JIT);
  34
  35   const RISCVSubtarget *getSubtargetImpl(const Function &F) const override;
  36   // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
  37   // subtargets are per-function entities based on the target-specific
  38   // attributes of each function.
  39   const RISCVSubtarget *getSubtargetImpl() const = delete;
  40
  41   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  42
  43   TargetLoweringObjectFile *getObjFileLowering() const override {
  44     return TLOF.get();
  45   }
  46
  47   MachineFunctionInfo *
  48   createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
  49                             const TargetSubtargetInfo *STI) const override;
  50
  51   TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
  52
  53   bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DstAS) const override;
  54
  55   yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
  56   yaml::MachineFunctionInfo *
  57   convertFuncInfoToYAML(const MachineFunction &MF) const override;
  58   bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
  59                                 PerFunctionMIParsingState &PFS,
  60                                 SMDiagnostic &Error,
  61                                 SMRange &SourceRange) const override;
  62 };
  63 } // namespace llvm
  64
  65 #endif