1 //=== WebAssembly.h - Declare WebAssembly target feature support *- C++ -*-===//
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
7 //===----------------------------------------------------------------------===//
9 // This file declares WebAssembly TargetInfo objects.
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H
14 #define LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H
16 #include "clang/Basic/TargetInfo.h"
17 #include "clang/Basic/TargetOptions.h"
18 #include "llvm/ADT/Triple.h"
19 #include "llvm/Support/Compiler.h"
24 class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public TargetInfo {
25 static const Builtin::Info BuiltinInfo[];
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;
43 explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &)
47 LargeArrayMinWidth = 128;
48 LargeArrayAlign = 128;
49 SimdDefaultAlign = 128;
50 SigAtomicType = SignedLong;
51 LongDoubleWidth = LongDoubleAlign = 128;
52 LongDoubleFormat = &llvm::APFloat::IEEEquad();
53 MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64;
54 // size_t being unsigned long for both wasm32 and wasm64 makes mangled names
55 // more consistent between the two.
56 SizeType = UnsignedLong;
57 PtrDiffType = SignedLong;
58 IntPtrType = SignedLong;
62 void getTargetDefines(const LangOptions &Opts,
63 MacroBuilder &Builder) const override;
66 static void setSIMDLevel(llvm::StringMap<bool> &Features, SIMDEnum Level);
69 initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags,
71 const std::vector<std::string> &FeaturesVec) const override;
72 bool hasFeature(StringRef Feature) const final;
74 bool handleTargetFeatures(std::vector<std::string> &Features,
75 DiagnosticsEngine &Diags) final;
77 bool isValidCPUName(StringRef Name) const final;
78 void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const final;
80 bool setCPU(const std::string &Name) final { return isValidCPUName(Name); }
82 ArrayRef<Builtin::Info> getTargetBuiltins() const final;
84 BuiltinVaListKind getBuiltinVaListKind() const final {
85 return VoidPtrBuiltinVaList;
88 ArrayRef<const char *> getGCCRegNames() const final { return None; }
90 ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const final {
94 bool validateAsmConstraint(const char *&Name,
95 TargetInfo::ConstraintInfo &Info) const final {
99 const char *getClobbers() const final { return ""; }
101 bool isCLZForZeroUndef() const final { return false; }
103 bool hasInt128Type() const final { return true; }
105 IntType getIntTypeByWidth(unsigned BitWidth, bool IsSigned) const final {
106 // WebAssembly prefers long long for explicitly 64-bit integers.
107 return BitWidth == 64 ? (IsSigned ? SignedLongLong : UnsignedLongLong)
108 : TargetInfo::getIntTypeByWidth(BitWidth, IsSigned);
111 IntType getLeastIntTypeByWidth(unsigned BitWidth, bool IsSigned) const final {
112 // WebAssembly uses long long for int_least64_t and int_fast64_t.
113 return BitWidth == 64
114 ? (IsSigned ? SignedLongLong : UnsignedLongLong)
115 : TargetInfo::getLeastIntTypeByWidth(BitWidth, IsSigned);
118 class LLVM_LIBRARY_VISIBILITY WebAssembly32TargetInfo
119 : public WebAssemblyTargetInfo {
121 explicit WebAssembly32TargetInfo(const llvm::Triple &T,
122 const TargetOptions &Opts)
123 : WebAssemblyTargetInfo(T, Opts) {
124 resetDataLayout("e-m:e-p:32:32-i64:64-n32:64-S128");
128 void getTargetDefines(const LangOptions &Opts,
129 MacroBuilder &Builder) const override;
132 class LLVM_LIBRARY_VISIBILITY WebAssembly64TargetInfo
133 : public WebAssemblyTargetInfo {
135 explicit WebAssembly64TargetInfo(const llvm::Triple &T,
136 const TargetOptions &Opts)
137 : WebAssemblyTargetInfo(T, Opts) {
138 LongAlign = LongWidth = 64;
139 PointerAlign = PointerWidth = 64;
140 SizeType = UnsignedLong;
141 PtrDiffType = SignedLong;
142 IntPtrType = SignedLong;
143 resetDataLayout("e-m:e-p:64:64-i64:64-n32:64-S128");
147 void getTargetDefines(const LangOptions &Opts,
148 MacroBuilder &Builder) const override;
150 } // namespace targets
152 #endif // LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H