class WebAssemblyTargetInfo

Declaration

class WebAssemblyTargetInfo : public TargetInfo { /* full declaration omitted */ };

Description

Exposes information about the current target.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:24

Inherits from: TargetInfo

Member Variables

private enum SIMDEnum SIMDLevel = NoSIMD

private bool HasNontrappingFPToInt = false

private bool HasSignExt = false

private bool HasExceptionHandling = false

private bool HasBulkMemory = false

private bool HasAtomics = false

private bool HasMutableGlobals = false

private bool HasMultivalue = false

private bool HasTailCall = false

private bool HasReferenceTypes = false

private bool HasExtendedConst = false

private std::string ABI

private static const Builtin::Info[] BuiltinInfo

Inherited from TargetInfo:

protected BigEndian

protected TLSSupported

protected VLASupported

protected NoAsmVariants

protected HasLegalHalfType

protected HasFloat128

protected HasFloat16

protected HasBFloat16

protected HasIbm128

protected HasLongDouble

protected HasFPReturn

protected HasStrictFP

protected MaxAtomicPromoteWidth

protected MaxAtomicInlineWidth

protected SimdDefaultAlign

protected DataLayoutString

protected UserLabelPrefix

protected MCountName

protected RegParmMax

protected SSERegParmMax

protected TheCXXABI

protected AddrSpaceMap

protected ProgramAddrSpace

protected PlatformName

protected PlatformMinVersion

protected HasAlignMac68kSupport

protected RealTypeUsesObjCFPRetMask

protected ComplexLongDoubleUsesFP2Ret

protected HasBuiltinMSVaList

protected IsRenderScriptTarget

protected HasAArch64SVETypes

protected HasRISCVVTypes

protected AllowAMDGPUUnsafeFPAtomics

protected ARMCDECoprocMask

protected MaxOpenCLWorkGroupSize

protected MaxBitIntWidth

protected DarwinTargetVariantTriple

protected UseAddrSpaceMapMangling

Inherited from TransferrableTargetInfo:

public PointerWidth

public PointerAlign

public BoolWidth

public BoolAlign

public IntWidth

public IntAlign

public HalfWidth

public HalfAlign

public BFloat16Width

public BFloat16Align

public FloatWidth

public FloatAlign

public DoubleWidth

public DoubleAlign

public LongDoubleWidth

public LongDoubleAlign

public Float128Align

public Ibm128Align

public LargeArrayMinWidth

public LargeArrayAlign

public LongWidth

public LongAlign

public LongLongWidth

public LongLongAlign

public ShortAccumWidth

public ShortAccumAlign

public AccumWidth

public AccumAlign

public LongAccumWidth

public LongAccumAlign

public ShortFractWidth

public ShortFractAlign

public FractWidth

public FractAlign

public LongFractWidth

public LongFractAlign

public PaddingOnUnsignedFixedPoint

public ShortAccumScale

public AccumScale

public LongAccumScale

public DefaultAlignForAttributeAligned

public MinGlobalAlign

public SuitableAlign

public NewAlign

public MaxVectorAlign

public MaxTLSAlign

public HalfFormat

public BFloat16Format

public FloatFormat

public DoubleFormat

public LongDoubleFormat

public Float128Format

public Ibm128Format

protected SizeType

protected IntMaxType

protected PtrDiffType

protected IntPtrType

protected WCharType

protected WIntType

protected Char16Type

protected Char32Type

protected Int64Type

protected Int16Type

protected SigAtomicType

protected ProcessIDType

protected UseSignedCharForObjCBool

protected UseBitFieldTypeAlignment

protected UseZeroLengthBitfieldAlignment

protected UseLeadingZeroLengthBitfield

protected UseExplicitBitFieldAlignment

protected ZeroLengthBitfieldBoundary

protected MaxAlignedAttribute

Method Overview

• public WebAssemblyTargetInfo(const llvm::Triple & T, const clang::TargetOptions &)
• private void adjust(clang::DiagnosticsEngine & Diags, clang::LangOptions & Opts)
• private clang::TargetInfo::CallingConvCheckResult checkCallingConvention(clang::CallingConv CC) const
• private void fillValidCPUList(SmallVectorImpl<llvm::StringRef> & Values) const
• public llvm::StringRef getABI() const
• private clang::TargetInfo::BuiltinVaListKind getBuiltinVaListKind() const
• private const char * getClobbers() const
• private ArrayRef<TargetInfo::GCCRegAlias> getGCCRegAliases() const
• private ArrayRef<const char *> getGCCRegNames() const
• private clang::TransferrableTargetInfo::IntType getIntTypeByWidth(unsigned int BitWidth, bool IsSigned) const
• private clang::TransferrableTargetInfo::IntType getLeastIntTypeByWidth(unsigned int BitWidth, bool IsSigned) const
• private ArrayRef<Builtin::Info> getTargetBuiltins() const
• protected void getTargetDefines(const clang::LangOptions & Opts, clang::MacroBuilder & Builder) const
• private bool handleTargetFeatures(std::vector<std::string> & Features, clang::DiagnosticsEngine & Diags)
• private bool hasBitIntType() const
• private bool hasFeature(llvm::StringRef Feature) const
• private bool hasInt128Type() const
• private bool hasProtectedVisibility() const
• private bool initFeatureMap(llvm::StringMap<bool> & Features, clang::DiagnosticsEngine & Diags, llvm::StringRef CPU, const std::vector<std::string> & FeaturesVec) const
• private bool isCLZForZeroUndef() const
• private bool isValidCPUName(llvm::StringRef Name) const
• public bool setABI(const std::string & Name)
• private bool setCPU(const std::string & Name)
• private void setFeatureEnabled(llvm::StringMap<bool> & Features, llvm::StringRef Name, bool Enabled) const
• private static void setSIMDLevel(llvm::StringMap<bool> & Features, clang::targets::WebAssemblyTargetInfo::SIMDEnum Level, bool Enabled)
• private bool validateAsmConstraint(const char *& Name, TargetInfo::ConstraintInfo & Info) const

Inherited from TargetInfo:

• public CPUSpecificManglingCharacter
• public CreateTargetInfo
• public adjust
• public adjustTargetOptions
• public allowAMDGPUUnsafeFPAtomics
• public allowDebugInfoForExternalRef
• public allowsLargerPreferedTypeAlignment
• public checkArithmeticFenceSupported
• public checkCFProtectionBranchSupported
• public checkCFProtectionReturnSupported
• public checkCallingConvention
• public convertConstraint
• protected copyAuxTarget
• public defaultsToAIXPowerAlignment
• public doUnsignedFixedPointTypesHavePadding
• public fillValidCPUList
• public fillValidTuneCPUList
• public getABI
• public getARMCDECoprocMask
• public getAccumAlign
• public getAccumIBits
• public getAccumScale
• public getAccumWidth
• public getAddressSpaceMap
• public getBFloat16Align
• public getBFloat16Format
• public getBFloat16Mangling
• public getBFloat16Width
• public getBoolAlign
• public getBoolWidth
• public getBuiltinVaListKind
• public getCPUCacheLineSize
• public getCPUSpecificCPUDispatchFeatures
• public getCPUSpecificTuneName
• public getCUDABuiltinAddressSpace
• public getCXXABI
• public getCallingConvKind
• public getChar16Align
• public getChar16Type
• public getChar16Width
• public getChar32Align
• public getChar32Type
• public getChar32Width
• public getCharAlign
• public getCharWidth
• public getClobbers
• public getConstantAddressSpace
• public getConstraintRegister
• public getCorrespondingUnsignedType
• public getDWARFAddressSpace
• public getDarwinTargetVariantSDKVersion
• public getDarwinTargetVariantTriple
• public getDataLayoutString
• public getDefaultAlignForAttributeAligned
• public getDefaultCallingConv
• public getDoubleAlign
• public getDoubleFormat
• public getDoubleWidth
• public getEHDataRegisterNumber
• public getExnObjectAlignment
• public getFPEvalMethod
• public getFloat128Align
• public getFloat128Format
• public getFloat128Mangling
• public getFloat128Width
• public getFloatAlign
• public getFloatFormat
• public getFloatWidth
• public getFractAlign
• public getFractScale
• public getFractWidth
• protected getGCCAddlRegNames
• protected getGCCRegAliases
• protected getGCCRegNames
• public getGridValue
• public getHalfAlign
• public getHalfFormat
• public getHalfWidth
• public getIbm128Align
• public getIbm128Format
• public getIbm128Mangling
• public getIbm128Width
• public getInt16Type
• public getInt64Type
• public getIntAlign
• public getIntMaxTWidth
• public getIntMaxType
• public getIntPtrType
• public getIntTypeByWidth
• public getIntWidth
• public getLargeArrayAlign
• public getLargeArrayMinWidth
• public getLeastIntTypeByWidth
• public getLongAccumAlign
• public getLongAccumIBits
• public getLongAccumScale
• public getLongAccumWidth
• public getLongAlign
• public getLongDoubleAlign
• public getLongDoubleFormat
• public getLongDoubleMangling
• public getLongDoubleWidth
• public getLongFractAlign
• public getLongFractScale
• public getLongFractWidth
• public getLongLongAlign
• public getLongLongWidth
• public getLongWidth
• public getMCountName
• public getMaxAlignedAttribute
• public getMaxAtomicInlineWidth
• public getMaxAtomicPromoteWidth
• public getMaxBitIntWidth
• public getMaxOpenCLWorkGroupSize
• public getMaxPointerWidth
• public getMaxTLSAlign
• public getMaxVectorAlign
• public getMinGlobalAlign
• public getNewAlign
• public getNormalizedGCCRegisterName
• public getNullPointerValue
• public getOpenCLBuiltinAddressSpace
• public getOpenCLTypeAddrSpace
• public getPlatformMinVersion
• public getPlatformName
• public getPointerAlign
• protected getPointerAlignV
• public getPointerWidth
• protected getPointerWidthV
• public getProcessIDType
• public getProgramAddressSpace
• public getPtrDiffType
• protected getPtrDiffTypeV
• public getRealTypeByWidth
• public getRegParmMax
• public getRegisterWidth
• public getSDKVersion
• public getShortAccumAlign
• public getShortAccumIBits
• public getShortAccumScale
• public getShortAccumWidth
• public getShortAlign
• public getShortFractAlign
• public getShortFractScale
• public getShortFractWidth
• public getShortWidth
• public getSigAtomicType
• public getSignedSizeType
• public getSimdDefaultAlign
• public getSizeType
• public getStaticInitSectionSpecifier
• public getSuitableAlign
• public getSupportedOpenCLOpts
• public getSupportedOpenCLOpts
• public getTargetBuiltins
• public getTargetDefines
• public getTargetID
• public getTargetOpts
• public getTriple
• public getTypeAlign
• public getTypeConstantSuffix
• public getTypeFormatModifier
• public getTypeName
• public getTypeWidth
• public getUInt16Type
• public getUInt64Type
• public getUIntMaxType
• public getUIntPtrType
• public getUnsignedAccumIBits
• public getUnsignedAccumScale
• public getUnsignedFractScale
• public getUnsignedLongAccumIBits
• public getUnsignedLongAccumScale
• public getUnsignedLongFractScale
• public getUnsignedPtrDiffType
• public getUnsignedShortAccumIBits
• public getUnsignedShortAccumScale
• public getUnsignedShortFractScale
• public getUnwindWordWidth
• public getUserLabelPrefix
• public getVScaleRange
• public getVtblPtrAddressSpace
• public getWCharAlign
• public getWCharType
• public getWCharWidth
• public getWIntType
• public getZeroLengthBitfieldBoundary
• public handleAsmEscapedChar
• public handleTargetFeatures
• public hasAArch64SVETypes
• public hasAlignMac68kSupport
• public hasBFloat16Type
• public hasBitIntType
• public hasBuiltinAtomic
• public hasBuiltinMSVaList
• public hasFPReturn
• public hasFeature
• public hasFeatureEnabled
• public hasFloat128Type
• public hasFloat16Type
• public hasIbm128Type
• public hasInt128Type
• public hasLegalHalfType
• public hasLongDoubleType
• public hasNoAsmVariants
• public hasPS4DLLImportExport
• public hasProtectedVisibility
• public hasRISCVVTypes
• public hasSjLjLowering
• public hasStrictFP
• public initFeatureMap
• public isBigEndian
• public isBranchProtectionSupportedArch
• public isCLZForZeroUndef
• public isLittleEndian
• public isNan2008
• public isRenderScriptTarget
• public isSEHTrySupported
• public isSPRegName
• public isTLSSupported
• public isTypeSigned
• public isVLASupported
• public isValidCPUName
• public isValidClobber
• public isValidFeatureName
• public isValidGCCRegisterName
• public isValidTuneCPUName
• public multiVersionSortPriority
• public noSignedCharForObjCBool
• protected resetDataLayout
• public resolveSymbolicName
• public setABI
• public setAuxTarget
• public setCPU
• public setCommandLineOpenCLOpts
• public setFPMath
• public setFeatureEnabled
• public setMaxAtomicWidth
• public setSupportedOpenCLOpts
• public shouldDLLImportComdatSymbols
• public supportAllOpenCLOpts
• public supportSourceEvalMethod
• public supportsExtendIntArgs
• public supportsIFunc
• public supportsMultiVersioning
• public supportsTargetAttributeTune
• public useAddressSpaceMapMangling
• public useBitFieldTypeAlignment
• public useExplicitBitFieldAlignment
• public useFP16ConversionIntrinsics
• public useLeadingZeroLengthBitfield
• public useObjCFP2RetForComplexLongDouble
• public useObjCFPRetForRealType
• public useSignedCharForObjCBool
• public useZeroLengthBitfieldAlignment
• public validateAsmConstraint
• public validateBranchProtection
• public validateCPUSpecificCPUDispatch
• public validateConstraintModifier
• public validateCpuIs
• public validateCpuSupports
• public validateGlobalRegisterVariable
• public validateInputConstraint
• public validateInputSize
• public validateOpenCLTarget
• public validateOutputConstraint
• public validateOutputSize
• public validateTarget

Methods

¶WebAssemblyTargetInfo(const llvm::Triple& T,
                      const clang::TargetOptions&)

Declared at: clang/lib/Basic/Targets/WebAssembly.h:47

Parameters

const llvm::Triple& T

const clang::TargetOptions&

¶void adjust(clang::DiagnosticsEngine& Diags,
            clang::LangOptions& Opts)

Description

Set forced language options. Apply changes to the target information with respect to certain language options which change the target configuration and adjust the language based on the target options where applicable.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:145

Parameters

clang::DiagnosticsEngine& Diags

clang::LangOptions& Opts

¶clang::TargetInfo::CallingConvCheckResult
checkCallingConvention(
    clang::CallingConv CC) const

Description

Determines whether a given calling convention is valid for the target. A calling convention can either be accepted, produce a warning and be substituted with the default calling convention, or (someday) produce an error (such as using thiscall on a non-instance function).

Declared at: clang/lib/Basic/Targets/WebAssembly.h:129

Parameters

clang::CallingConv CC

¶void fillValidCPUList(
    SmallVectorImpl<llvm::StringRef>& Values)
    const

Description

Fill a SmallVectorImpl with the valid values to setCPU.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:89

Parameters

SmallVectorImpl<llvm::StringRef>& Values

¶llvm::StringRef getABI() const

Description

Get the ABI currently in use.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:65

¶clang::TargetInfo::BuiltinVaListKind
getBuiltinVaListKind() const

Description

Returns the kind of __builtin_va_list type that should be used with this target.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:95

¶const char* getClobbers() const

Description

Returns a string of target-specific clobbers, in LLVM format.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:110

¶ArrayRef<TargetInfo::GCCRegAlias>
getGCCRegAliases() const

Declared at: clang/lib/Basic/Targets/WebAssembly.h:101

¶ArrayRef<const char*> getGCCRegNames() const

Declared at: clang/lib/Basic/Targets/WebAssembly.h:99

¶clang::TransferrableTargetInfo::IntType
getIntTypeByWidth(unsigned int BitWidth,
                  bool IsSigned) const

Description

Return integer type with specified width.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:116

Parameters

unsigned int BitWidth

bool IsSigned

¶clang::TransferrableTargetInfo::IntType
getLeastIntTypeByWidth(unsigned int BitWidth,
                       bool IsSigned) const

Description

Return the smallest integer type with at least the specified width.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:122

Parameters

unsigned int BitWidth

bool IsSigned

¶ArrayRef<Builtin::Info> getTargetBuiltins() const

Description

Return information about target-specific builtins for the current primary target, and info about which builtins are non-portable across the current set of primary and secondary targets.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:93

¶void getTargetDefines(
    const clang::LangOptions& Opts,
    clang::MacroBuilder& Builder) const

Description

Appends the target-specific # define values for this target set to the specified buffer.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:69

Parameters

const clang::LangOptions& Opts

clang::MacroBuilder& Builder

¶bool handleTargetFeatures(
    std::vector<std::string>& Features,
    clang::DiagnosticsEngine& Diags)

Description

Perform initialization based on the user configured set of features (e.g., +sse4). The list is guaranteed to have at most one entry per feature. The target may modify the features list, to change which options are passed onwards to the backend. FIXME: This part should be fixed so that we can change handleTargetFeatures to merely a TargetInfo initialization routine.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:85

Parameters

std::vector<std::string>& Features

clang::DiagnosticsEngine& Diags

Returns

False on error.

¶bool hasBitIntType() const

Description

Determine whether the _BitInt type is supported on this target. This limitation is put into place for ABI reasons. FIXME: _BitInt is a required type in C23, so there's not much utility in asking whether the target supported it or not; I think this should be removed once backends have been alerted to the type and have had the chance to do implementation work if needed.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:141

¶bool hasFeature(llvm::StringRef Feature) const

Description

Determine whether the given target has the given feature.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:80

Parameters

llvm::StringRef Feature

¶bool hasInt128Type() const

Description

Determine whether the __int128 type is supported on this target.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:114

¶bool hasProtectedVisibility() const

Description

Does this target support "protected" visibility? Any target which dynamic libraries will naturally support something like "default" (meaning that the symbol is visible outside this shared object) and "hidden" (meaning that it isn't) visibilities, but "protected" is really an ELF-specific concept with weird semantics designed around the convenience of dynamic linker implementations. Which is not to suggest that there's consistent target-independent semantics for "default" visibility either; the entire thing is pretty badly mangled.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:143

¶bool initFeatureMap(
    llvm::StringMap<bool>& Features,
    clang::DiagnosticsEngine& Diags,
    llvm::StringRef CPU,
    const std::vector<std::string>& FeaturesVec)
    const

Description

Initialize the map with the default set of target features for the CPU this should include all legal feature strings on the target.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:77

Parameters

llvm::StringMap<bool>& Features

clang::DiagnosticsEngine& Diags

llvm::StringRef CPU

const std::vector<std::string>& FeaturesVec

Returns

False on error (invalid features).

¶bool isCLZForZeroUndef() const

Description

The __builtin_clz* and __builtin_ctz* built-in functions are specified to have undefined results for zero inputs, but on targets that support these operations in a way that provides well-defined results for zero without loss of performance, it is a good idea to avoid optimizing based on that undef behavior.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:112

¶bool isValidCPUName(llvm::StringRef Name) const

Description

brief Determine whether this TargetInfo supports the given CPU name.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:88

Parameters

llvm::StringRef Name

¶bool setABI(const std::string& Name)

Description

Use the specified ABI.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:66

Parameters

const std::string& Name

Returns

False on error (invalid ABI name).

¶bool setCPU(const std::string& Name)

Description

Target the specified CPU.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:91

Parameters

const std::string& Name

Returns

False on error (invalid CPU name).

¶void setFeatureEnabled(
    llvm::StringMap<bool>& Features,
    llvm::StringRef Name,
    bool Enabled) const

Description

Enable or disable a specific target feature; the feature name must be valid.

Declared at: clang/lib/Basic/Targets/WebAssembly.h:82

Parameters

llvm::StringMap<bool>& Features

llvm::StringRef Name

bool Enabled

¶static void setSIMDLevel(
    llvm::StringMap<bool>& Features,
    clang::targets::WebAssemblyTargetInfo::
        SIMDEnum Level,
    bool Enabled)

Declared at: clang/lib/Basic/Targets/WebAssembly.h:73

Parameters

llvm::StringMap<bool>& Features

clang::targets::WebAssemblyTargetInfo::SIMDEnum Level

bool Enabled

¶bool validateAsmConstraint(
    const char*& Name,
    TargetInfo::ConstraintInfo& Info) const

Declared at: clang/lib/Basic/Targets/WebAssembly.h:105

Parameters

const char*& Name

TargetInfo::ConstraintInfo& Info