1 | //=- WebAssemblySubtarget.h - Define Subtarget for the WebAssembly -*- C++ -*-// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | /// |
9 | /// \file |
10 | /// This file declares the WebAssembly-specific subclass of |
11 | /// TargetSubtarget. |
12 | /// |
13 | //===----------------------------------------------------------------------===// |
14 | |
15 | #ifndef LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H |
16 | #define LLVM_LIB_TARGET_WEBASSEMBLY_WEBASSEMBLYSUBTARGET_H |
17 | |
18 | #include "MCTargetDesc/WebAssemblyMCTargetDesc.h" |
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 |
27 | #include "WebAssemblyGenSubtargetInfo.inc" |
28 | |
29 | namespace llvm { |
30 | |
31 | // Defined in WebAssemblyGenSubtargetInfo.inc. |
32 | extern const SubtargetFeatureKV |
33 | WebAssemblyFeatureKV[WebAssembly::NumSubtargetFeatures]; |
34 | |
35 | class WebAssemblySubtarget final : public WebAssemblyGenSubtargetInfo { |
36 | enum SIMDEnum { |
37 | NoSIMD, |
38 | SIMD128, |
39 | RelaxedSIMD, |
40 | } SIMDLevel = NoSIMD; |
41 | |
42 | bool HasAtomics = false; |
43 | bool HasNontrappingFPToInt = false; |
44 | bool HasSignExt = false; |
45 | bool HasExceptionHandling = false; |
46 | bool HasBulkMemory = false; |
47 | bool HasMultivalue = false; |
48 | bool HasMutableGlobals = false; |
49 | bool HasTailCall = false; |
50 | bool HasReferenceTypes = false; |
51 | bool HasExtendedConst = false; |
52 | bool HasMultiMemory = false; |
53 | |
54 | /// What processor and OS we're targeting. |
55 | Triple TargetTriple; |
56 | |
57 | WebAssemblyFrameLowering FrameLowering; |
58 | WebAssemblyInstrInfo InstrInfo; |
59 | WebAssemblySelectionDAGInfo TSInfo; |
60 | WebAssemblyTargetLowering TLInfo; |
61 | |
62 | WebAssemblySubtarget &initializeSubtargetDependencies(StringRef CPU, |
63 | StringRef FS); |
64 | |
65 | public: |
66 | /// This constructor initializes the data members to match that |
67 | /// of the specified triple. |
68 | WebAssemblySubtarget(const Triple &TT, const std::string &CPU, |
69 | const std::string &FS, const TargetMachine &TM); |
70 | |
71 | const WebAssemblySelectionDAGInfo *getSelectionDAGInfo() const override { |
72 | return &TSInfo; |
73 | } |
74 | const WebAssemblyFrameLowering *getFrameLowering() const override { |
75 | return &FrameLowering; |
76 | } |
77 | const WebAssemblyTargetLowering *getTargetLowering() const override { |
78 | return &TLInfo; |
79 | } |
80 | const WebAssemblyInstrInfo *getInstrInfo() const override { |
81 | return &InstrInfo; |
82 | } |
83 | const WebAssemblyRegisterInfo *getRegisterInfo() const override { |
84 | return &getInstrInfo()->getRegisterInfo(); |
85 | } |
86 | const Triple &getTargetTriple() const { return TargetTriple; } |
87 | bool enableAtomicExpand() const override; |
88 | bool enableIndirectBrExpand() const override { return true; } |
89 | bool enableMachineScheduler() const override; |
90 | bool useAA() const override; |
91 | |
92 | // Predicates used by WebAssemblyInstrInfo.td. |
93 | bool hasAddr64() const { return TargetTriple.isArch64Bit(); } |
94 | bool hasSIMD128() const { return SIMDLevel >= SIMD128; } |
95 | bool hasRelaxedSIMD() const { return SIMDLevel >= RelaxedSIMD; } |
96 | bool hasAtomics() const { return HasAtomics; } |
97 | bool hasNontrappingFPToInt() const { return HasNontrappingFPToInt; } |
98 | bool hasSignExt() const { return HasSignExt; } |
99 | bool hasExceptionHandling() const { return HasExceptionHandling; } |
100 | bool hasBulkMemory() const { return HasBulkMemory; } |
101 | bool hasMultivalue() const { return HasMultivalue; } |
102 | bool hasMutableGlobals() const { return HasMutableGlobals; } |
103 | bool hasTailCall() const { return HasTailCall; } |
104 | bool hasReferenceTypes() const { return HasReferenceTypes; } |
105 | bool hasMultiMemory() const { return HasMultiMemory; } |
106 | |
107 | /// Parses features string setting specified subtarget options. Definition of |
108 | /// function is auto generated by tblgen. |
109 | void ParseSubtargetFeatures(StringRef CPU, StringRef TuneCPU, StringRef FS); |
110 | }; |
111 | |
112 | } // end namespace llvm |
113 | |
114 | #endif |
115 | |