1 //=- WebAssemblySubtarget.h - Define Subtarget for the WebAssembly -*- C++ -*-//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// This file declares the WebAssembly-specific subclass of
14 //===----------------------------------------------------------------------===//
16 #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H
17 #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H
19 #include "WebAssemblyFrameLowering.h"
20 #include "WebAssemblyISelLowering.h"
21 #include "WebAssemblyInstrInfo.h"
22 #include "WebAssemblySelectionDAGInfo.h"
23 #include "llvm/CodeGen/TargetSubtargetInfo.h"
26 #define GET_SUBTARGETINFO_HEADER
27 #include "WebAssemblyGenSubtargetInfo.inc"
31 class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo {
38 bool HasAtomics = false;
39 bool HasNontrappingFPToInt = false;
40 bool HasSignExt = false;
41 bool HasExceptionHandling = false;
43 /// String name of used CPU.
44 std::string CPUString;
46 /// What processor and OS we're targeting.
49 WebAssemblyFrameLowering FrameLowering;
50 WebAssemblyInstrInfo InstrInfo;
51 WebAssemblySelectionDAGInfo TSInfo;
52 WebAssemblyTargetLowering TLInfo;
54 /// Initializes using CPUString and the passed in feature string so that we
55 /// can use initializer lists for subtarget initialization.
56 WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS);
59 /// This constructor initializes the data members to match that
60 /// of the specified triple.
61 WebAssemblySubtarget(const Triple &TT, const std::string &CPU,
62 const std::string &FS, const TargetMachine &TM);
64 const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override {
67 const WebAssemblyFrameLowering *getFrameLowering() const override {
68 return &FrameLowering;
70 const WebAssemblyTargetLowering *getTargetLowering() const override {
73 const WebAssemblyInstrInfo *getInstrInfo() const override {
76 const WebAssemblyRegisterInfo *getRegisterInfo() const override {
77 return &getInstrInfo()->getRegisterInfo();
79 const Triple &getTargetTriple() const { return TargetTriple; }
80 bool enableMachineScheduler() const override;
81 bool useAA() const override;
83 // Predicates used by WebAssemblyInstrInfo.td.
84 bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
85 bool hasSIMD128() const { return SIMDLevel >= SIMD128; }
86 bool hasUnimplementedSIMD128() const {
87 return SIMDLevel >= UnimplementedSIMD128;
89 bool hasAtomics() const { return HasAtomics; }
90 bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
91 bool hasSignExt() const { return HasSignExt; }
92 bool hasExceptionHandling() const { return HasExceptionHandling; }
94 /// Parses features string setting specified subtarget options. Definition of
95 /// function is auto generated by tblgen.
96 void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
99 } // end namespace llvm