/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/lib/Basic/Targets/WebAssembly.h
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1 | | //=== WebAssembly.h - Declare WebAssembly target feature support *- 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 | | // This file declares WebAssembly TargetInfo objects. |
10 | | // |
11 | | //===----------------------------------------------------------------------===// |
12 | | |
13 | | #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H |
14 | | #define LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H |
15 | | |
16 | | #include "clang/Basic/TargetInfo.h" |
17 | | #include "clang/Basic/TargetOptions.h" |
18 | | #include "llvm/ADT/Triple.h" |
19 | | #include "llvm/Support/Compiler.h" |
20 | | |
21 | | namespace clang { |
22 | | namespace targets { |
23 | | |
24 | | class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public TargetInfo { |
25 | | static const Builtin::Info BuiltinInfo[]; |
26 | | |
27 | | enum SIMDEnum { |
28 | | NoSIMD, |
29 | | SIMD128, |
30 | | UnimplementedSIMD128, |
31 | | } SIMDLevel = NoSIMD; |
32 | | |
33 | | bool HasNontrappingFPToInt = false; |
34 | | bool HasSignExt = false; |
35 | | bool HasExceptionHandling = false; |
36 | | bool HasBulkMemory = false; |
37 | | bool HasAtomics = false; |
38 | | bool HasMutableGlobals = false; |
39 | | bool HasMultivalue = false; |
40 | | bool HasTailCall = false; |
41 | | bool HasReferenceTypes = false; |
42 | | |
43 | | std::string ABI; |
44 | | |
45 | | public: |
46 | | explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &) |
47 | 94 | : TargetInfo(T) { |
48 | 94 | NoAsmVariants = true; |
49 | 94 | SuitableAlign = 128; |
50 | 94 | LargeArrayMinWidth = 128; |
51 | 94 | LargeArrayAlign = 128; |
52 | 94 | SimdDefaultAlign = 128; |
53 | 94 | SigAtomicType = SignedLong; |
54 | 94 | LongDoubleWidth = LongDoubleAlign = 128; |
55 | 94 | LongDoubleFormat = &llvm::APFloat::IEEEquad(); |
56 | 94 | MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; |
57 | | // size_t being unsigned long for both wasm32 and wasm64 makes mangled names |
58 | | // more consistent between the two. |
59 | 94 | SizeType = UnsignedLong; |
60 | 94 | PtrDiffType = SignedLong; |
61 | 94 | IntPtrType = SignedLong; |
62 | 94 | } |
63 | | |
64 | | StringRef getABI() const override; |
65 | | bool setABI(const std::string &Name) override; |
66 | | |
67 | | protected: |
68 | | void getTargetDefines(const LangOptions &Opts, |
69 | | MacroBuilder &Builder) const override; |
70 | | |
71 | | private: |
72 | | static void setSIMDLevel(llvm::StringMap<bool> &Features, SIMDEnum Level, |
73 | | bool Enabled); |
74 | | |
75 | | bool |
76 | | initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, |
77 | | StringRef CPU, |
78 | | const std::vector<std::string> &FeaturesVec) const override; |
79 | | bool hasFeature(StringRef Feature) const final; |
80 | | |
81 | | void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name, |
82 | | bool Enabled) const final; |
83 | | |
84 | | bool handleTargetFeatures(std::vector<std::string> &Features, |
85 | | DiagnosticsEngine &Diags) final; |
86 | | |
87 | | bool isValidCPUName(StringRef Name) const final; |
88 | | void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const final; |
89 | | |
90 | 36 | bool setCPU(const std::string &Name) final { return isValidCPUName(Name); } |
91 | | |
92 | | ArrayRef<Builtin::Info> getTargetBuiltins() const final; |
93 | | |
94 | 58 | BuiltinVaListKind getBuiltinVaListKind() const final { |
95 | 58 | return VoidPtrBuiltinVaList; |
96 | 58 | } |
97 | | |
98 | 0 | ArrayRef<const char *> getGCCRegNames() const final { return None; } |
99 | | |
100 | 0 | ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const final { |
101 | 0 | return None; |
102 | 0 | } |
103 | | |
104 | | bool validateAsmConstraint(const char *&Name, |
105 | 0 | TargetInfo::ConstraintInfo &Info) const final { |
106 | 0 | return false; |
107 | 0 | } |
108 | | |
109 | 0 | const char *getClobbers() const final { return ""; } |
110 | | |
111 | 0 | bool isCLZForZeroUndef() const final { return false; } |
112 | | |
113 | 272 | bool hasInt128Type() const final { return true; } |
114 | | |
115 | 0 | IntType getIntTypeByWidth(unsigned BitWidth, bool IsSigned) const final { |
116 | | // WebAssembly prefers long long for explicitly 64-bit integers. |
117 | 0 | return BitWidth == 64 ? (IsSigned ? SignedLongLong : UnsignedLongLong) |
118 | 0 | : TargetInfo::getIntTypeByWidth(BitWidth, IsSigned); |
119 | 0 | } |
120 | | |
121 | 1.47k | IntType getLeastIntTypeByWidth(unsigned BitWidth, bool IsSigned) const final { |
122 | | // WebAssembly uses long long for int_least64_t and int_fast64_t. |
123 | 1.47k | return BitWidth == 64 |
124 | 368 | ? (IsSigned ? SignedLongLong184 : UnsignedLongLong184 ) |
125 | 1.10k | : TargetInfo::getLeastIntTypeByWidth(BitWidth, IsSigned); |
126 | 1.47k | } |
127 | | |
128 | 0 | CallingConvCheckResult checkCallingConvention(CallingConv CC) const override { |
129 | 0 | switch (CC) { |
130 | 0 | case CC_C: |
131 | 0 | case CC_Swift: |
132 | 0 | return CCCR_OK; |
133 | 0 | default: |
134 | 0 | return CCCR_Warning; |
135 | 0 | } |
136 | 0 | } |
137 | | |
138 | 30 | bool hasExtIntType() const override { return true; } |
139 | | |
140 | 0 | bool hasProtectedVisibility() const override { return false; } |
141 | | }; |
142 | | |
143 | | class LLVM_LIBRARY_VISIBILITY WebAssembly32TargetInfo |
144 | | : public WebAssemblyTargetInfo { |
145 | | public: |
146 | | explicit WebAssembly32TargetInfo(const llvm::Triple &T, |
147 | | const TargetOptions &Opts) |
148 | 62 | : WebAssemblyTargetInfo(T, Opts) { |
149 | 62 | resetDataLayout("e-m:e-p:32:32-i64:64-n32:64-S128"); |
150 | 62 | } |
151 | | |
152 | | protected: |
153 | | void getTargetDefines(const LangOptions &Opts, |
154 | | MacroBuilder &Builder) const override; |
155 | | }; |
156 | | |
157 | | class LLVM_LIBRARY_VISIBILITY WebAssembly64TargetInfo |
158 | | : public WebAssemblyTargetInfo { |
159 | | public: |
160 | | explicit WebAssembly64TargetInfo(const llvm::Triple &T, |
161 | | const TargetOptions &Opts) |
162 | 32 | : WebAssemblyTargetInfo(T, Opts) { |
163 | 32 | LongAlign = LongWidth = 64; |
164 | 32 | PointerAlign = PointerWidth = 64; |
165 | 32 | SizeType = UnsignedLong; |
166 | 32 | PtrDiffType = SignedLong; |
167 | 32 | IntPtrType = SignedLong; |
168 | 32 | resetDataLayout("e-m:e-p:64:64-i64:64-n32:64-S128"); |
169 | 32 | } |
170 | | |
171 | | protected: |
172 | | void getTargetDefines(const LangOptions &Opts, |
173 | | MacroBuilder &Builder) const override; |
174 | | }; |
175 | | } // namespace targets |
176 | | } // namespace clang |
177 | | #endif // LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H |