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 /// \brief 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/Target/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 34 /// String name of used CPU. 35 std::string CPUString; 36 37 /// What processor and OS we're targeting. 38 Triple TargetTriple; 39 40 WebAssemblyFrameLowering FrameLowering; 41 WebAssemblyInstrInfo InstrInfo; 42 WebAssemblySelectionDAGInfo TSInfo; 43 WebAssemblyTargetLowering TLInfo; 44 45 /// Initializes using CPUString and the passed in feature string so that we 46 /// can use initializer lists for subtarget initialization. 47 WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS); 48 49 public: 50 /// This constructor initializes the data members to match that 51 /// of the specified triple. 52 WebAssemblySubtarget(const Triple &TT, const std::string &CPU, 53 const std::string &FS, const TargetMachine &TM); 54 getSelectionDAGInfo()55 const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override { 56 return &TSInfo; 57 } getFrameLowering()58 const WebAssemblyFrameLowering *getFrameLowering() const override { 59 return &FrameLowering; 60 } getTargetLowering()61 const WebAssemblyTargetLowering *getTargetLowering() const override { 62 return &TLInfo; 63 } getTargetTriple()64 const Triple &getTargetTriple() const { return TargetTriple; } 65 bool enableMachineScheduler() const override; useAA()66 bool useAA() const override { return true; } 67 68 // Predicates used by WebAssemblyInstrInfo.td. hasAddr64()69 bool hasAddr64() const { return TargetTriple.isArch64Bit(); } hasSIMD128()70 bool hasSIMD128() const { return HasSIMD128; } 71 72 /// Parses features string setting specified subtarget options. Definition of 73 /// function is auto generated by tblgen. 74 void ParseSubtargetFeatures(StringRef CPU, StringRef FS); 75 }; 76 77 } // end namespace llvm 78 79 #endif 80