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Diffstat (limited to 'contrib/llvm-project/clang/lib/Basic/Targets/WebAssembly.h')
| -rw-r--r-- | contrib/llvm-project/clang/lib/Basic/Targets/WebAssembly.h | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/contrib/llvm-project/clang/lib/Basic/Targets/WebAssembly.h b/contrib/llvm-project/clang/lib/Basic/Targets/WebAssembly.h new file mode 100644 index 000000000000..075486990558 --- /dev/null +++ b/contrib/llvm-project/clang/lib/Basic/Targets/WebAssembly.h @@ -0,0 +1,191 @@ +//=== WebAssembly.h - Declare WebAssembly target feature support *- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file declares WebAssembly TargetInfo objects. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H +#define LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H + +#include "clang/Basic/TargetInfo.h" +#include "clang/Basic/TargetOptions.h" +#include "llvm/ADT/Triple.h" +#include "llvm/Support/Compiler.h" + +namespace clang { +namespace targets { + +class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public TargetInfo { + static const Builtin::Info BuiltinInfo[]; + + enum SIMDEnum { + NoSIMD, + SIMD128, + RelaxedSIMD, + } SIMDLevel = NoSIMD; + + bool HasNontrappingFPToInt = false; + bool HasSignExt = false; + bool HasExceptionHandling = false; + bool HasBulkMemory = false; + bool HasAtomics = false; + bool HasMutableGlobals = false; + bool HasMultivalue = false; + bool HasTailCall = false; + bool HasReferenceTypes = false; + + std::string ABI; + +public: + explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &) + : TargetInfo(T) { + NoAsmVariants = true; + SuitableAlign = 128; + LargeArrayMinWidth = 128; + LargeArrayAlign = 128; + SimdDefaultAlign = 128; + SigAtomicType = SignedLong; + LongDoubleWidth = LongDoubleAlign = 128; + LongDoubleFormat = &llvm::APFloat::IEEEquad(); + MaxAtomicPromoteWidth = MaxAtomicInlineWidth = 64; + // size_t being unsigned long for both wasm32 and wasm64 makes mangled names + // more consistent between the two. + SizeType = UnsignedLong; + PtrDiffType = SignedLong; + IntPtrType = SignedLong; + } + + StringRef getABI() const override; + bool setABI(const std::string &Name) override; + +protected: + void getTargetDefines(const LangOptions &Opts, + MacroBuilder &Builder) const override; + +private: + static void setSIMDLevel(llvm::StringMap<bool> &Features, SIMDEnum Level, + bool Enabled); + + bool + initFeatureMap(llvm::StringMap<bool> &Features, DiagnosticsEngine &Diags, + StringRef CPU, + const std::vector<std::string> &FeaturesVec) const override; + bool hasFeature(StringRef Feature) const final; + + void setFeatureEnabled(llvm::StringMap<bool> &Features, StringRef Name, + bool Enabled) const final; + + bool handleTargetFeatures(std::vector<std::string> &Features, + DiagnosticsEngine &Diags) final; + + bool isValidCPUName(StringRef Name) const final; + void fillValidCPUList(SmallVectorImpl<StringRef> &Values) const final; + + bool setCPU(const std::string &Name) final { return isValidCPUName(Name); } + + ArrayRef<Builtin::Info> getTargetBuiltins() const final; + + BuiltinVaListKind getBuiltinVaListKind() const final { + return VoidPtrBuiltinVaList; + } + + ArrayRef<const char *> getGCCRegNames() const final { return None; } + + ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const final { + return None; + } + + bool validateAsmConstraint(const char *&Name, + TargetInfo::ConstraintInfo &Info) const final { + return false; + } + + const char *getClobbers() const final { return ""; } + + bool isCLZForZeroUndef() const final { return false; } + + bool hasInt128Type() const final { return true; } + + IntType getIntTypeByWidth(unsigned BitWidth, bool IsSigned) const final { + // WebAssembly prefers long long for explicitly 64-bit integers. + return BitWidth == 64 ? (IsSigned ? SignedLongLong : UnsignedLongLong) + : TargetInfo::getIntTypeByWidth(BitWidth, IsSigned); + } + + IntType getLeastIntTypeByWidth(unsigned BitWidth, bool IsSigned) const final { + // WebAssembly uses long long for int_least64_t and int_fast64_t. + return BitWidth == 64 + ? (IsSigned ? SignedLongLong : UnsignedLongLong) + : TargetInfo::getLeastIntTypeByWidth(BitWidth, IsSigned); + } + + CallingConvCheckResult checkCallingConvention(CallingConv CC) const override { + switch (CC) { + case CC_C: + case CC_Swift: + return CCCR_OK; + case CC_SwiftAsync: + return CCCR_Error; + default: + return CCCR_Warning; + } + } + + bool hasBitIntType() const override { return true; } + + bool hasProtectedVisibility() const override { return false; } + + void adjust(DiagnosticsEngine &Diags, LangOptions &Opts) override; +}; + +class LLVM_LIBRARY_VISIBILITY WebAssembly32TargetInfo + : public WebAssemblyTargetInfo { +public: + explicit WebAssembly32TargetInfo(const llvm::Triple &T, + const TargetOptions &Opts) + : WebAssemblyTargetInfo(T, Opts) { + if (T.isOSEmscripten()) + resetDataLayout("e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-f128:64-n32:64-" + "S128-ni:1:10:20"); + else + resetDataLayout( + "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"); + } + +protected: + void getTargetDefines(const LangOptions &Opts, + MacroBuilder &Builder) const override; +}; + +class LLVM_LIBRARY_VISIBILITY WebAssembly64TargetInfo + : public WebAssemblyTargetInfo { +public: + explicit WebAssembly64TargetInfo(const llvm::Triple &T, + const TargetOptions &Opts) + : WebAssemblyTargetInfo(T, Opts) { + LongAlign = LongWidth = 64; + PointerAlign = PointerWidth = 64; + SizeType = UnsignedLong; + PtrDiffType = SignedLong; + IntPtrType = SignedLong; + if (T.isOSEmscripten()) + resetDataLayout("e-m:e-p:64:64-p10:8:8-p20:8:8-i64:64-f128:64-n32:64-" + "S128-ni:1:10:20"); + else + resetDataLayout( + "e-m:e-p:64:64-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"); + } + +protected: + void getTargetDefines(const LangOptions &Opts, + MacroBuilder &Builder) const override; +}; +} // namespace targets +} // namespace clang +#endif // LLVM_CLANG_LIB_BASIC_TARGETS_WEBASSEMBLY_H |