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, CodeGenOpt::Level 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 66