llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.h

   1 // WebAssemblyTargetMachine.h - Define TargetMachine for WebAssembly -*- 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 /// \file
  10 /// This file declares the WebAssembly-specific subclass of
  11 /// TargetMachine.
  12 ///
  13 //===----------------------------------------------------------------------===//
  14
  15 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETMACHINE_H
  16 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYTARGETMACHINE_H
  17
  18 #include "WebAssemblySubtarget.h"
  19 #include "llvm/Target/TargetMachine.h"
  20 #include <optional>
  21
  22 namespace llvm {
  23
  24 class WebAssemblyTargetMachine final : public LLVMTargetMachine {
  25   std::unique_ptr<TargetLoweringObjectFile> TLOF;
  26   mutable StringMap<std::unique_ptr<WebAssemblySubtarget>> SubtargetMap;
  27   bool UsesMultivalueABI = false;
  28
  29 public:
  30   WebAssemblyTargetMachine(const Target &T, const Triple &TT, StringRef CPU,
  31                            StringRef FS, const TargetOptions &Options,
  32                            std::optional<Reloc::Model> RM,
  33                            std::optional<CodeModel::Model> CM,
  34                            CodeGenOptLevel OL, bool JIT);
  35
  36   ~WebAssemblyTargetMachine() override;
  37
  38   const WebAssemblySubtarget *getSubtargetImpl() const;
  39   const WebAssemblySubtarget *getSubtargetImpl(std::string CPU,
  40                                                std::string FS) const;
  41   const WebAssemblySubtarget *
  42   getSubtargetImpl(const Function &F) const override;
  43
  44   // Pass Pipeline Configuration
  45   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
  46
  47   TargetLoweringObjectFile *getObjFileLowering() const override {
  48     return TLOF.get();
  49   }
  50
  51   MachineFunctionInfo *
  52   createMachineFunctionInfo(BumpPtrAllocator &Allocator, const Function &F,
  53                             const TargetSubtargetInfo *STI) const override;
  54
  55   TargetTransformInfo getTargetTransformInfo(const Function &F) const override;
  56
  57   bool usesPhysRegsForValues() const override { return false; }
  58
  59   yaml::MachineFunctionInfo *createDefaultFuncInfoYAML() const override;
  60   yaml::MachineFunctionInfo *
  61   convertFuncInfoToYAML(const MachineFunction &MF) const override;
  62   bool parseMachineFunctionInfo(const yaml::MachineFunctionInfo &,
  63                                 PerFunctionMIParsingState &PFS,
  64                                 SMDiagnostic &Error,
  65                                 SMRange &SourceRange) const override;
  66
  67   bool usesMultivalueABI() const { return UsesMultivalueABI; }
  68 };
  69
  70 } // end namespace llvm
  71
  72 #endif