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   yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
51   yaml::MachineFunctionInfo *
52   convertFuncInfoToYAML(const MachineFunction &MF) const override;
53   bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
54                                 PerFunctionMIParsingState &PFS,
55                                 SMDiagnostic &Error,
56                                 SMRange &SourceRange) const override;
57 };
58 } // namespace llvm
59 
60 #endif
61