llvm/lib/Target/RISCV/RISCVTargetMachine.h

   1 //===-- RISCVTargetMachine.h - Define TargetMachine for RISCV ---*- 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 RISCV 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
  22 namespace llvm {
  23 class RISCVTargetMachine : public LLVMTargetMachine {
  24   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  25   mutable StringMap<std::unique_ptr<RISCVSubtarget>> SubtargetMap;
  26
  27 public:
  28   RISCVTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  29                      StringRef FS, const TargetOptions &Options,
  30                      Optional<Reloc::Model> RM, Optional<CodeModel::Model> CM,
  31                      CodeGenOpt::Level OL, bool JIT);
  32
  33   const RISCVSubtarget *getSubtargetImpl(const Function &F) const override;
  34   // DO NOT IMPLEMENT: There is no such thing as a valid default subtarget,
  35   // subtargets are per-function entities based on the target-specific
  36   // attributes of each function.
  37   const RISCVSubtarget *getSubtargetImpl() const = delete;
  38
  39   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  40
  41   TargetLoweringObjectFile *getObjFileLowering() const override {
  42     return TLOF.get();
  43   }
  44
  45   TargetTransformInfo getTargetTransformInfo(const Function &F) override;
  46
  47   virtual bool isNoopAddrSpaceCast(unsigned SrcAS,
  48                                    unsigned DstAS) const override;
  49 };
  50 } // namespace llvm
  51
  52 #endif