WebAssemblySubtarget.h revision 327952 
1117864Speter//=- WebAssemblySubtarget.h - Define Subtarget for the WebAssembly -*- C++ -*-//
2117864Speter//
3117864Speter//                     The LLVM Compiler Infrastructure
4117864Speter//
5117864Speter// This file is distributed under the University of Illinois Open Source
6117864Speter// License. See LICENSE.TXT for details.
7117864Speter//
8117864Speter//===----------------------------------------------------------------------===//
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/CodeGen/TargetSubtargetInfo.h"
24#include <string>
25
26#define GET_SUBTARGETINFO_HEADER
27#include "WebAssemblyGenSubtargetInfo.inc"
28
29namespace llvm {
30
31class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo {
32  bool HasSIMD128;
33  bool HasAtomics;
34  bool HasNontrappingFPToInt;
35
36  /// String name of used CPU.
37  std::string CPUString;
38
39  /// What processor and OS we're targeting.
40  Triple TargetTriple;
41
42  WebAssemblyFrameLowering FrameLowering;
43  WebAssemblyInstrInfo InstrInfo;
44  WebAssemblySelectionDAGInfo TSInfo;
45  WebAssemblyTargetLowering TLInfo;
46
47  /// Initializes using CPUString and the passed in feature string so that we
48  /// can use initializer lists for subtarget initialization.
49  WebAssemblySubtarget &initializeSubtargetDependencies(StringRef FS);
50
51public:
52  /// This constructor initializes the data members to match that
53  /// of the specified triple.
54  WebAssemblySubtarget(const Triple &TT, const std::string &CPU,
55                       const std::string &FS, const TargetMachine &TM);
56
57  const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override {
58    return &TSInfo;
59  }
60  const WebAssemblyFrameLowering *getFrameLowering() const override {
61    return &FrameLowering;
62  }
63  const WebAssemblyTargetLowering *getTargetLowering() const override {
64    return &TLInfo;
65  }
66  const WebAssemblyInstrInfo *getInstrInfo() const override {
67    return &InstrInfo;
68  }
69  const WebAssemblyRegisterInfo *getRegisterInfo() const override {
70    return &getInstrInfo()->getRegisterInfo();
71  }
72  const Triple &getTargetTriple() const { return TargetTriple; }
73  bool enableMachineScheduler() const override;
74  bool useAA() const override;
75
76  // Predicates used by WebAssemblyInstrInfo.td.
77  bool hasAddr64() const { return TargetTriple.isArch64Bit(); }
78  bool hasSIMD128() const { return HasSIMD128; }
79  bool hasAtomics() const { return HasAtomics; }
80  bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; }
81
82  /// Parses features string setting specified subtarget options. Definition of
83  /// function is auto generated by tblgen.
84  void ParseSubtargetFeatures(StringRef CPU, StringRef FS);
85};
86
87} // end namespace llvm
88
89#endif
90