1 //=- WebAssemblySubtarget.h - Define Subtarget for the WebAssembly -*- C++ -*-// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// This file declares the WebAssembly-specific subclass of 12 /// TargetSubtarget. 13 /// 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H 17 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H 18 19 #include "WebAssemblyFrameLowering.h" 20 #include "WebAssemblyISelLowering.h" 21 #include "WebAssemblyInstrInfo.h" 22 #include "WebAssemblySelectionDAGInfo.h" 23 #include "llvm/CodeGen/TargetSubtargetInfo.h" 24 #include <string> 25 26 #define GET_SUBTARGETINFO_HEADER 27 #include "WebAssemblyGenSubtargetInfo.inc" 28 29 namespace llvm { 30 31 class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo { 32 bool HasSIMD128; 33 bool HasAtomics; 34 bool HasNontrappingFPToInt; 35 bool HasSignExt; 36 bool HasExceptionHandling; 37 38 /// String name of used CPU. 39 std::string CPUString; 40 41 /// What processor and OS we're targeting. 42 Triple TargetTriple; 43 44 WebAssemblyFrameLowering FrameLowering; 45 WebAssemblyInstrInfo InstrInfo; 46 WebAssemblySelectionDAGInfo TSInfo; 47 WebAssemblyTargetLowering TLInfo; 48 49 /// Initializes using CPUString and the passed in feature string so that we 50 /// can use initializer lists for subtarget initialization. 51 WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS); 52 53 public: 54 /// This constructor initializes the data members to match that 55 /// of the specified triple. 56 WebAssemblySubtarget(const Triple &TT, const std::string &CPU, 57 const std::string &FS, const TargetMachine &TM); 58 getSelectionDAGInfo()59 const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override { 60 return &TSInfo; 61 } getFrameLowering()62 const WebAssemblyFrameLowering *getFrameLowering() const override { 63 return &FrameLowering; 64 } getTargetLowering()65 const WebAssemblyTargetLowering *getTargetLowering() const override { 66 return &TLInfo; 67 } getInstrInfo()68 const WebAssemblyInstrInfo *getInstrInfo() const override { 69 return &InstrInfo; 70 } getRegisterInfo()71 const WebAssemblyRegisterInfo *getRegisterInfo() const override { 72 return &getInstrInfo()->getRegisterInfo(); 73 } getTargetTriple()74 const Triple &getTargetTriple() const { return TargetTriple; } 75 bool enableMachineScheduler() const override; 76 bool useAA() const override; 77 78 // Predicates used by WebAssemblyInstrInfo.td. hasAddr64()79 bool hasAddr64() const { return TargetTriple.isArch64Bit(); } hasSIMD128()80 bool hasSIMD128() const { return HasSIMD128; } hasAtomics()81 bool hasAtomics() const { return HasAtomics; } hasNontrappingFPToInt()82 bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; } hasSignExt()83 bool hasSignExt() const { return HasSignExt; } hasExceptionHandling()84 bool hasExceptionHandling() const { return HasExceptionHandling; } 85 86 /// Parses features string setting specified subtarget options. Definition of 87 /// function is auto generated by tblgen. 88 void ParseSubtargetFeatures(StringRef CPU, StringRef FS); 89 }; 90 91 } // end namespace llvm 92 93 #endif 94