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 {
34 bool HasNontrappingFPToInt;
36 bool HasExceptionHandling;
38 /// String name of used CPU.
39 std::string CPUString;
41 /// What processor and OS we're targeting.
44 WebAssemblyFrameLowering FrameLowering;
45 WebAssemblyInstrInfo InstrInfo;
46 WebAssemblySelectionDAGInfo TSInfo;
47 WebAssemblyTargetLowering TLInfo;
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);
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);
59 const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override {
62 const WebAssemblyFrameLowering *getFrameLowering() const override {
63 return &FrameLowering;
65 const WebAssemblyTargetLowering *getTargetLowering() const override {
68 const WebAssemblyInstrInfo *getInstrInfo() const override {
71 const WebAssemblyRegisterInfo *getRegisterInfo() const override {
72 return &getInstrInfo()->getRegisterInfo();
74 const Triple &getTargetTriple() const { return TargetTriple; }
75 bool enableMachineScheduler() const override;
76 bool useAA() const override;
78 // Predicates used by WebAssemblyInstrInfo.td.
79 bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
80 bool hasSIMD128() const { return HasSIMD128; }
81 bool hasAtomics() const { return HasAtomics; }
82 bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
83 bool hasSignExt() const { return HasSignExt; }
84 bool hasExceptionHandling() const { return HasExceptionHandling; }
86 /// Parses features string setting specified subtarget options. Definition of
87 /// function is auto generated by tblgen.
88 void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
91 } // end namespace llvm