LLVM 20.0.0git
Public Member Functions | Public Attributes | List of all members
llvm::TargetOptions Class Reference

#include "llvm/Target/TargetOptions.h"

Public Member Functions

 TargetOptions ()
 
bool DisableFramePointerElim (const MachineFunction &MF) const
 DisableFramePointerElim - This returns true if frame pointer elimination optimization should be disabled for the given machine function.
 
bool FramePointerIsReserved (const MachineFunction &MF) const
 FramePointerIsReserved - This returns true if the frame pointer must always either point to a new frame record or be un-modified in the given function.
 
bool HonorSignDependentRoundingFPMath () const
 HonorSignDependentRoundingFPMath - Return true if the codegen must assume that the rounding mode of the FPU can change from its default.
 
bool ShouldEmitDebugEntryValues () const
 NOTE: There are targets that still do not support the debug entry values production.
 
void setFPDenormalMode (DenormalMode Mode)
 
void setFP32DenormalMode (DenormalMode Mode)
 
DenormalMode getRawFPDenormalMode () const
 
DenormalMode getRawFP32DenormalMode () const
 
DenormalMode getDenormalMode (const fltSemantics &FPType) const
 

Public Attributes

std::pair< int, int > BinutilsVersion {0, 0}
 If greater than 0, override the default value of MCAsmInfo::BinutilsVersion.
 
unsigned UnsafeFPMath: 1
 UnsafeFPMath - This flag is enabled when the -enable-unsafe-fp-math flag is specified on the command line.
 
unsigned NoInfsFPMath: 1
 NoInfsFPMath - This flag is enabled when the -enable-no-infs-fp-math flag is specified on the command line.
 
unsigned NoNaNsFPMath: 1
 NoNaNsFPMath - This flag is enabled when the -enable-no-nans-fp-math flag is specified on the command line.
 
unsigned NoTrappingFPMath: 1
 NoTrappingFPMath - This flag is enabled when the -enable-no-trapping-fp-math is specified on the command line.
 
unsigned NoSignedZerosFPMath: 1
 NoSignedZerosFPMath - This flag is enabled when the -enable-no-signed-zeros-fp-math is specified on the command line.
 
unsigned ApproxFuncFPMath: 1
 ApproxFuncFPMath - This flag is enabled when the -enable-approx-func-fp-math is specified on the command line.
 
unsigned EnableAIXExtendedAltivecABI: 1
 EnableAIXExtendedAltivecABI - This flag returns true when -vec-extabi is specified.
 
unsigned HonorSignDependentRoundingFPMathOption: 1
 HonorSignDependentRoundingFPMath - This returns true when the -enable-sign-dependent-rounding-fp-math is specified.
 
unsigned NoZerosInBSS: 1
 NoZerosInBSS - By default some codegens place zero-initialized data to .bss section.
 
unsigned GuaranteedTailCallOpt: 1
 GuaranteedTailCallOpt - This flag is enabled when -tailcallopt is specified on the commandline.
 
unsigned StackSymbolOrdering: 1
 StackSymbolOrdering - When true, this will allow CodeGen to order the local stack symbols (for code size, code locality, or any other heuristics).
 
unsigned EnableFastISel: 1
 EnableFastISel - This flag enables fast-path instruction selection which trades away generated code quality in favor of reducing compile time.
 
unsigned EnableGlobalISel: 1
 EnableGlobalISel - This flag enables global instruction selection.
 
GlobalISelAbortMode GlobalISelAbort = GlobalISelAbortMode::Enable
 EnableGlobalISelAbort - Control abort behaviour when global instruction selection fails to lower/select an instruction.
 
SwiftAsyncFramePointerMode SwiftAsyncFramePointer
 Control when and how the Swift async frame pointer bit should be set.
 
unsigned UseInitArray: 1
 UseInitArray - Use .init_array instead of .ctors for static constructors.
 
unsigned DisableIntegratedAS: 1
 Disable the integrated assembler.
 
unsigned FunctionSections: 1
 Emit functions into separate sections.
 
unsigned DataSections: 1
 Emit data into separate sections.
 
unsigned IgnoreXCOFFVisibility: 1
 Do not emit visibility attribute for xcoff.
 
unsigned XCOFFTracebackTable: 1
 Emit XCOFF traceback table.
 
unsigned UniqueSectionNames: 1
 
unsigned UniqueBasicBlockSectionNames: 1
 Use unique names for basic block sections.
 
unsigned SeparateNamedSections: 1
 Emit named sections with the same name into different sections.
 
unsigned TrapUnreachable: 1
 Emit target-specific trap instruction for 'unreachable' IR instructions.
 
unsigned NoTrapAfterNoreturn: 1
 Do not emit a trap instruction for 'unreachable' IR instructions behind noreturn calls, even if TrapUnreachable is true.
 
unsigned TLSSize: 8
 Bit size of immediate TLS offsets (0 == use the default).
 
unsigned EmulatedTLS: 1
 EmulatedTLS - This flag enables emulated TLS model, using emutls function in the runtime library.
 
unsigned EnableTLSDESC: 1
 EnableTLSDESC - This flag enables TLS Descriptors.
 
unsigned EnableIPRA: 1
 This flag enables InterProcedural Register Allocation (IPRA).
 
unsigned EmitStackSizeSection: 1
 Emit section containing metadata on function stack sizes.
 
unsigned EnableMachineOutliner: 1
 Enables the MachineOutliner pass.
 
unsigned EnableMachineFunctionSplitter: 1
 Enables the MachineFunctionSplitter pass.
 
unsigned SupportsDefaultOutlining: 1
 Set if the target supports default outlining behaviour.
 
unsigned EmitAddrsig: 1
 Emit address-significance table.
 
unsigned BBAddrMap: 1
 
BasicBlockSection BBSections = BasicBlockSection::None
 Emit basic blocks into separate sections.
 
std::shared_ptr< MemoryBufferBBSectionsFuncListBuf
 Memory Buffer that contains information on sampled basic blocks and used to selectively generate basic block sections.
 
unsigned EmitCallSiteInfo: 1
 The flag enables call site info production.
 
unsigned SupportsDebugEntryValues: 1
 Set if the target supports the debug entry values by default.
 
unsigned EnableDebugEntryValues: 1
 When set to true, the EnableDebugEntryValues option forces production of debug entry values even if the target does not officially support it.
 
unsigned ValueTrackingVariableLocations: 1
 
unsigned ForceDwarfFrameSection: 1
 Emit DWARF debug frame section.
 
unsigned XRayFunctionIndex: 1
 Emit XRay Function Index section.
 
unsigned DebugStrictDwarf: 1
 When set to true, don't use DWARF extensions in later DWARF versions.
 
unsigned Hotpatch: 1
 Emit the hotpatch flag in CodeView debug.
 
unsigned PPCGenScalarMASSEntries: 1
 Enables scalar MASS conversions.
 
unsigned JMCInstrument: 1
 Enable JustMyCode instrumentation.
 
unsigned EnableCFIFixup: 1
 Enable the CFIFixup pass.
 
unsigned MisExpect: 1
 When set to true, enable MisExpect Diagnostics By default, it is set to false.
 
unsigned XCOFFReadOnlyPointers: 1
 When set to true, const objects with relocatable address values are put into the RO data section.
 
std::string StackUsageOutput
 Name of the stack usage file (i.e., .su file) if user passes -fstack-usage.
 
unsigned LoopAlignment = 0
 If greater than 0, override TargetLoweringBase::PrefLoopAlignment.
 
FloatABI::ABIType FloatABIType = FloatABI::Default
 FloatABIType - This setting is set by -float-abi=xxx option is specfied on the command line.
 
FPOpFusion::FPOpFusionMode AllowFPOpFusion = FPOpFusion::Standard
 AllowFPOpFusion - This flag is set by the -fp-contract=xxx option.
 
ThreadModel::Model ThreadModel = ThreadModel::POSIX
 ThreadModel - This flag specifies the type of threading model to assume for things like atomics.
 
EABI EABIVersion = EABI::Default
 EABIVersion - This flag specifies the EABI version.
 
DebuggerKind DebuggerTuning = DebuggerKind::Default
 Which debugger to tune for.
 
ExceptionHandling ExceptionModel = ExceptionHandling::None
 What exception model to use.
 
MCTargetOptions MCOptions
 Machine level options.
 
std::string ObjectFilenameForDebug
 Stores the filename/path of the final .o/.obj file, to be written in the debug information.
 

Detailed Description

Definition at line 135 of file TargetOptions.h.

Constructor & Destructor Documentation

◆ TargetOptions()

llvm::TargetOptions::TargetOptions ( )
inline

Definition at line 137 of file TargetOptions.h.

Member Function Documentation

◆ DisableFramePointerElim()

bool TargetOptions::DisableFramePointerElim ( const MachineFunction MF) const

◆ FramePointerIsReserved()

bool TargetOptions::FramePointerIsReserved ( const MachineFunction MF) const

FramePointerIsReserved - This returns true if the frame pointer must always either point to a new frame record or be un-modified in the given function.

Definition at line 43 of file TargetOptionsImpl.cpp.

References llvm::StringSwitch< T, R >::Case(), llvm::StringSwitch< T, R >::Cases(), F, FP, llvm::TargetSubtargetInfo::getFrameLowering(), llvm::MachineFunction::getFunction(), llvm::MachineFunction::getSubtarget(), and llvm::TargetFrameLowering::keepFramePointer().

Referenced by llvm::ARMFrameLowering::isFPReserved().

◆ getDenormalMode()

DenormalMode llvm::TargetOptions::getDenormalMode ( const fltSemantics FPType) const

◆ getRawFP32DenormalMode()

DenormalMode llvm::TargetOptions::getRawFP32DenormalMode ( ) const
inline

Definition at line 449 of file TargetOptions.h.

◆ getRawFPDenormalMode()

DenormalMode llvm::TargetOptions::getRawFPDenormalMode ( ) const
inline

Definition at line 445 of file TargetOptions.h.

◆ HonorSignDependentRoundingFPMath()

bool TargetOptions::HonorSignDependentRoundingFPMath ( ) const

HonorSignDependentRoundingFPMath - Return true if the codegen must assume that the rounding mode of the FPU can change from its default.

Definition at line 61 of file TargetOptionsImpl.cpp.

References HonorSignDependentRoundingFPMathOption, and UnsafeFPMath.

◆ setFP32DenormalMode()

void llvm::TargetOptions::setFP32DenormalMode ( DenormalMode  Mode)
inline

Definition at line 441 of file TargetOptions.h.

References Mode.

◆ setFPDenormalMode()

void llvm::TargetOptions::setFPDenormalMode ( DenormalMode  Mode)
inline

Definition at line 437 of file TargetOptions.h.

References Mode.

◆ ShouldEmitDebugEntryValues()

bool TargetOptions::ShouldEmitDebugEntryValues ( ) const

NOTE: There are targets that still do not support the debug entry values production.

NOTE: There are targets that still do not support the debug entry values production and that is being controlled with the SupportsDebugEntryValues.

In addition, SCE debugger does not have the feature implemented, so prefer not to emit the debug entry values in that case. The EnableDebugEntryValues can be used for the testing purposes.

Definition at line 70 of file TargetOptionsImpl.cpp.

References DebuggerTuning, EnableDebugEntryValues, llvm::SCE, and SupportsDebugEntryValues.

Referenced by llvm::DwarfDebug::DwarfDebug().

Member Data Documentation

◆ AllowFPOpFusion

FPOpFusion::FPOpFusionMode llvm::TargetOptions::AllowFPOpFusion = FPOpFusion::Standard

AllowFPOpFusion - This flag is set by the -fp-contract=xxx option.

This controls the creation of fused FP ops that store intermediate results in higher precision than IEEE allows (E.g. FMAs).

Fast mode - allows formation of fused FP ops whenever they're profitable. Standard mode - allow fusion only for 'blessed' FP ops. At present the only blessed op is the fmuladd intrinsic. In the future more blessed ops may be added. Strict mode - allow fusion only if/when it can be proven that the excess precision won't effect the result.

Note: This option only controls formation of fused ops by the optimizers. Fused operations that are explicitly specified (e.g. FMA via the llvm.fma.* intrinsic) will always be honored, regardless of the value of this option.

Definition at line 416 of file TargetOptions.h.

Referenced by llvm::NVPTXTargetLowering::allowFMA(), and combineFaddCFmul().

◆ ApproxFuncFPMath

unsigned llvm::TargetOptions::ApproxFuncFPMath

ApproxFuncFPMath - This flag is enabled when the -enable-approx-func-fp-math is specified on the command line.

This specifies that optimizations are allowed to substitute math functions with approximate calculations

Definition at line 207 of file TargetOptions.h.

◆ BBAddrMap

unsigned llvm::TargetOptions::BBAddrMap

◆ BBSections

BasicBlockSection llvm::TargetOptions::BBSections = BasicBlockSection::None

Emit basic blocks into separate sections.

Definition at line 328 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getBBSectionsType().

◆ BBSectionsFuncListBuf

std::shared_ptr<MemoryBuffer> llvm::TargetOptions::BBSectionsFuncListBuf

Memory Buffer that contains information on sampled basic blocks and used to selectively generate basic block sections.

Definition at line 332 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getBBSectionsFuncListBuf().

◆ BinutilsVersion

std::pair<int, int> llvm::TargetOptions::BinutilsVersion {0, 0}

If greater than 0, override the default value of MCAsmInfo::BinutilsVersion.

Definition at line 171 of file TargetOptions.h.

Referenced by llvm::LLVMTargetMachine::initAsmInfo().

◆ DataSections

unsigned llvm::TargetOptions::DataSections

◆ DebuggerTuning

DebuggerKind llvm::TargetOptions::DebuggerTuning = DebuggerKind::Default

Which debugger to tune for.

Definition at line 426 of file TargetOptions.h.

Referenced by llvm::computeLTOCacheKey(), llvm::DwarfDebug::DwarfDebug(), and ShouldEmitDebugEntryValues().

◆ DebugStrictDwarf

unsigned llvm::TargetOptions::DebugStrictDwarf

When set to true, don't use DWARF extensions in later DWARF versions.

By default, it is set to false.

Definition at line 362 of file TargetOptions.h.

Referenced by llvm::DwarfUnit::addAttribute(), and llvm::DwarfUnit::constructTypeDIE().

◆ DisableIntegratedAS

unsigned llvm::TargetOptions::DisableIntegratedAS

Disable the integrated assembler.

Definition at line 266 of file TargetOptions.h.

Referenced by llvm::LLVMTargetMachine::initAsmInfo().

◆ EABIVersion

EABI llvm::TargetOptions::EABIVersion = EABI::Default

EABIVersion - This flag specifies the EABI version.

Definition at line 423 of file TargetOptions.h.

Referenced by llvm::ARMBaseTargetMachine::ARMBaseTargetMachine().

◆ EmitAddrsig

unsigned llvm::TargetOptions::EmitAddrsig

Emit address-significance table.

Definition at line 321 of file TargetOptions.h.

Referenced by llvm::AsmPrinter::doFinalization().

◆ EmitCallSiteInfo

unsigned llvm::TargetOptions::EmitCallSiteInfo

The flag enables call site info production.

It is used only for debug info, and it is restricted only to optimized code. This can be used for something else, so that should be controlled in the frontend.

Definition at line 337 of file TargetOptions.h.

Referenced by llvm::ScheduleDAGSDNodes::EmitSchedule().

◆ EmitStackSizeSection

unsigned llvm::TargetOptions::EmitStackSizeSection

Emit section containing metadata on function stack sizes.

Definition at line 309 of file TargetOptions.h.

Referenced by llvm::AsmPrinter::emitStackSizeSection(), and llvm::AsmPrinter::SetupMachineFunction().

◆ EmulatedTLS

unsigned llvm::TargetOptions::EmulatedTLS

EmulatedTLS - This flag enables emulated TLS model, using emutls function in the runtime library.

Definition at line 300 of file TargetOptions.h.

Referenced by llvm::orc::irManglingOptionsFromTargetOptions(), llvm::orc::JITTargetMachineBuilder::JITTargetMachineBuilder(), and llvm::TargetMachine::useEmulatedTLS().

◆ EnableAIXExtendedAltivecABI

unsigned llvm::TargetOptions::EnableAIXExtendedAltivecABI

EnableAIXExtendedAltivecABI - This flag returns true when -vec-extabi is specified.

The code generator is then able to use both volatile and nonvolitle vector registers. When false, the code generator only uses volatile vector registers which is the default setting on AIX.

Definition at line 213 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getAIXExtendedAltivecABI().

◆ EnableCFIFixup

unsigned llvm::TargetOptions::EnableCFIFixup

Enable the CFIFixup pass.

Definition at line 374 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::addMachinePasses(), and llvm::TargetMachine::setCFIFixup().

◆ EnableDebugEntryValues

unsigned llvm::TargetOptions::EnableDebugEntryValues

When set to true, the EnableDebugEntryValues option forces production of debug entry values even if the target does not officially support it.

Useful for testing purposes only. This flag should never be checked directly, always use ShouldEmitDebugEntryValues instead.

Definition at line 344 of file TargetOptions.h.

Referenced by ShouldEmitDebugEntryValues().

◆ EnableFastISel

unsigned llvm::TargetOptions::EnableFastISel

EnableFastISel - This flag enables fast-path instruction selection which trades away generated code quality in favor of reducing compile time.

Definition at line 247 of file TargetOptions.h.

Referenced by LLVMCreateMCJITCompilerForModule(), llvm::OptLevelChanger::OptLevelChanger(), promoteToConstantPool(), llvm::TargetMachine::setFastISel(), and llvm::ARMSubtarget::useFastISel().

◆ EnableGlobalISel

unsigned llvm::TargetOptions::EnableGlobalISel

EnableGlobalISel - This flag enables global instruction selection.

Definition at line 250 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::addCoreISelPasses(), and llvm::TargetMachine::setGlobalISel().

◆ EnableIPRA

unsigned llvm::TargetOptions::EnableIPRA

This flag enables InterProcedural Register Allocation (IPRA).

Definition at line 306 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::addMachinePasses(), llvm::TargetFrameLowering::determineCalleeSaves(), and llvm::TargetPassConfig::TargetPassConfig().

◆ EnableMachineFunctionSplitter

unsigned llvm::TargetOptions::EnableMachineFunctionSplitter

Enables the MachineFunctionSplitter pass.

Definition at line 315 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::addMachinePasses().

◆ EnableMachineOutliner

unsigned llvm::TargetOptions::EnableMachineOutliner

Enables the MachineOutliner pass.

Definition at line 312 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::addMachinePasses(), and llvm::TargetMachine::setMachineOutliner().

◆ EnableTLSDESC

unsigned llvm::TargetOptions::EnableTLSDESC

EnableTLSDESC - This flag enables TLS Descriptors.

Definition at line 303 of file TargetOptions.h.

Referenced by llvm::TargetMachine::useTLSDESC().

◆ ExceptionModel

ExceptionHandling llvm::TargetOptions::ExceptionModel = ExceptionHandling::None

What exception model to use.

Definition at line 456 of file TargetOptions.h.

Referenced by llvm::LLVMTargetMachine::initAsmInfo().

◆ FloatABIType

FloatABI::ABIType llvm::TargetOptions::FloatABIType = FloatABI::Default

FloatABIType - This setting is set by -float-abi=xxx option is specfied on the command line.

This setting may either be Default, Soft, or Hard. Default selects the target's default behavior. Soft selects the ABI for software floating point, but does not indicate that FP hardware may not be used. Such a combination is unfortunately popular (e.g. arm-apple-darwin). Hard presumes that the normal FP ABI is used.

Definition at line 398 of file TargetOptions.h.

Referenced by llvm::ARMBaseTargetMachine::ARMBaseTargetMachine(), and llvm::CSKYSubtarget::useHardFloatABI().

◆ ForceDwarfFrameSection

unsigned llvm::TargetOptions::ForceDwarfFrameSection

◆ FunctionSections

unsigned llvm::TargetOptions::FunctionSections

◆ GlobalISelAbort

GlobalISelAbortMode llvm::TargetOptions::GlobalISelAbort = GlobalISelAbortMode::Enable

EnableGlobalISelAbort - Control abort behaviour when global instruction selection fails to lower/select an instruction.

Definition at line 254 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::isGlobalISelAbortEnabled(), llvm::TargetPassConfig::reportDiagnosticWhenGlobalISelFallback(), llvm::TargetMachine::setGlobalISelAbort(), and llvm::TargetPassConfig::TargetPassConfig().

◆ GuaranteedTailCallOpt

unsigned llvm::TargetOptions::GuaranteedTailCallOpt

GuaranteedTailCallOpt - This flag is enabled when -tailcallopt is specified on the commandline.

When the flag is on, participating targets will perform tail call optimization on all calls which use the fastcc calling convention and which satisfy certain target-independent criteria (being at the end of a function, having the same return type as their parent function, etc.), using an alternate ABI if necessary.

Definition at line 236 of file TargetOptions.h.

Referenced by llvm::PPCFrameLowering::determineCalleeSaves(), llvm::PPCFrameLowering::eliminateCallFramePseudoInstr(), llvm::PPCFrameLowering::emitEpilogue(), llvm::AArch64CallLowering::isEligibleForTailCallOptimization(), llvm::AMDGPUCallLowering::isEligibleForTailCallOptimization(), llvm::SITargetLowering::isEligibleForTailCallOptimization(), llvm::SITargetLowering::LowerCall(), llvm::AArch64CallLowering::lowerCall(), llvm::AArch64CallLowering::lowerFormalArguments(), llvm::AMDGPUCallLowering::lowerTailCall(), llvm::PPCFrameLowering::needsFP(), and llvm::PPCFrameLowering::processFunctionBeforeFrameFinalized().

◆ HonorSignDependentRoundingFPMathOption

unsigned llvm::TargetOptions::HonorSignDependentRoundingFPMathOption

HonorSignDependentRoundingFPMath - This returns true when the -enable-sign-dependent-rounding-fp-math is specified.

If this returns false (the default), the code generator is allowed to assume that the rounding behavior is the default (round-to-zero for all floating point to integer conversions, and round-to-nearest for all other arithmetic truncations). If this is enabled (set to true), the code generator must assume that the rounding mode may dynamically change.

Definition at line 222 of file TargetOptions.h.

Referenced by HonorSignDependentRoundingFPMath().

◆ Hotpatch

unsigned llvm::TargetOptions::Hotpatch

Emit the hotpatch flag in CodeView debug.

Definition at line 365 of file TargetOptions.h.

◆ IgnoreXCOFFVisibility

unsigned llvm::TargetOptions::IgnoreXCOFFVisibility

Do not emit visibility attribute for xcoff.

Definition at line 275 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getIgnoreXCOFFVisibility().

◆ JMCInstrument

unsigned llvm::TargetOptions::JMCInstrument

Enable JustMyCode instrumentation.

Definition at line 371 of file TargetOptions.h.

◆ LoopAlignment

unsigned llvm::TargetOptions::LoopAlignment = 0

If greater than 0, override TargetLoweringBase::PrefLoopAlignment.

Definition at line 390 of file TargetOptions.h.

Referenced by llvm::TargetLoweringBase::getPrefLoopAlignment().

◆ MCOptions

MCTargetOptions llvm::TargetOptions::MCOptions

◆ MisExpect

unsigned llvm::TargetOptions::MisExpect

When set to true, enable MisExpect Diagnostics By default, it is set to false.

Definition at line 378 of file TargetOptions.h.

◆ NoInfsFPMath

unsigned llvm::TargetOptions::NoInfsFPMath

NoInfsFPMath - This flag is enabled when the -enable-no-infs-fp-math flag is specified on the command line.

When this flag is off (the default), the code generator is not allowed to assume the FP arithmetic arguments and results are never +-Infs.

Definition at line 184 of file TargetOptions.h.

◆ NoNaNsFPMath

unsigned llvm::TargetOptions::NoNaNsFPMath

NoNaNsFPMath - This flag is enabled when the -enable-no-nans-fp-math flag is specified on the command line.

When this flag is off (the default), the code generator is not allowed to assume the FP arithmetic arguments and results are never NaNs.

Definition at line 190 of file TargetOptions.h.

Referenced by combineFMinFMax(), combineFMinNumFMaxNum(), llvm::SelectionDAGBuilder::EmitBranchForMergedCondition(), and LowerFMINIMUM_FMAXIMUM().

◆ NoSignedZerosFPMath

unsigned llvm::TargetOptions::NoSignedZerosFPMath

NoSignedZerosFPMath - This flag is enabled when the -enable-no-signed-zeros-fp-math is specified on the command line.

This specifies that optimizations are allowed to treat the sign of a zero argument or result as insignificant.

Definition at line 201 of file TargetOptions.h.

Referenced by combineFaddCFmul(), combineFMinFMax(), combineSelect(), foldFPToIntToFP(), and LowerFMINIMUM_FMAXIMUM().

◆ NoTrapAfterNoreturn

unsigned llvm::TargetOptions::NoTrapAfterNoreturn

Do not emit a trap instruction for 'unreachable' IR instructions behind noreturn calls, even if TrapUnreachable is true.

Definition at line 293 of file TargetOptions.h.

Referenced by llvm::AArch64TargetMachine::AArch64TargetMachine(), llvm::ARMBaseTargetMachine::ARMBaseTargetMachine(), llvm::LLVMTargetMachine::LLVMTargetMachine(), llvm::WebAssemblyTargetMachine::WebAssemblyTargetMachine(), and llvm::X86TargetMachine::X86TargetMachine().

◆ NoTrappingFPMath

unsigned llvm::TargetOptions::NoTrappingFPMath

NoTrappingFPMath - This flag is enabled when the -enable-no-trapping-fp-math is specified on the command line.

This specifies that there are no trap handlers to handle exceptions.

Definition at line 195 of file TargetOptions.h.

◆ NoZerosInBSS

unsigned llvm::TargetOptions::NoZerosInBSS

NoZerosInBSS - By default some codegens place zero-initialized data to .bss section.

This flag disables such behaviour (necessary, e.g. for crt*.o compiling).

Definition at line 228 of file TargetOptions.h.

Referenced by llvm::TargetLoweringObjectFile::getKindForGlobal().

◆ ObjectFilenameForDebug

std::string llvm::TargetOptions::ObjectFilenameForDebug

Stores the filename/path of the final .o/.obj file, to be written in the debug information.

This is used for emitting the CodeView S_OBJNAME record.

Definition at line 464 of file TargetOptions.h.

◆ PPCGenScalarMASSEntries

unsigned llvm::TargetOptions::PPCGenScalarMASSEntries

Enables scalar MASS conversions.

Definition at line 368 of file TargetOptions.h.

◆ SeparateNamedSections

unsigned llvm::TargetOptions::SeparateNamedSections

Emit named sections with the same name into different sections.

Definition at line 286 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getSeparateNamedSections().

◆ StackSymbolOrdering

unsigned llvm::TargetOptions::StackSymbolOrdering

StackSymbolOrdering - When true, this will allow CodeGen to order the local stack symbols (for code size, code locality, or any other heuristics).

When false, the local symbols are left in whatever order they were generated. Default is true.

Definition at line 242 of file TargetOptions.h.

◆ StackUsageOutput

std::string llvm::TargetOptions::StackUsageOutput

Name of the stack usage file (i.e., .su file) if user passes -fstack-usage.

If empty, it can be implied that -fstack-usage is not passed on the command line.

Definition at line 387 of file TargetOptions.h.

Referenced by llvm::AsmPrinter::emitStackUsage().

◆ SupportsDebugEntryValues

unsigned llvm::TargetOptions::SupportsDebugEntryValues

Set if the target supports the debug entry values by default.

Definition at line 339 of file TargetOptions.h.

Referenced by llvm::TargetMachine::setSupportsDebugEntryValues(), and ShouldEmitDebugEntryValues().

◆ SupportsDefaultOutlining

unsigned llvm::TargetOptions::SupportsDefaultOutlining

Set if the target supports default outlining behaviour.

Definition at line 318 of file TargetOptions.h.

Referenced by llvm::TargetPassConfig::addMachinePasses(), and llvm::TargetMachine::setSupportsDefaultOutlining().

◆ SwiftAsyncFramePointer

SwiftAsyncFramePointerMode llvm::TargetOptions::SwiftAsyncFramePointer
Initial value:

Control when and how the Swift async frame pointer bit should be set.

Definition at line 258 of file TargetOptions.h.

Referenced by llvm::AArch64FrameLowering::emitEpilogue(), llvm::AArch64FrameLowering::emitPrologue(), and llvm::X86FrameLowering::emitPrologue().

◆ ThreadModel

ThreadModel::Model llvm::TargetOptions::ThreadModel = ThreadModel::POSIX

ThreadModel - This flag specifies the type of threading model to assume for things like atomics.

Definition at line 420 of file TargetOptions.h.

Referenced by llvm::BasicTTIImplBase< T >::isSingleThreaded().

◆ TLSSize

unsigned llvm::TargetOptions::TLSSize

Bit size of immediate TLS offsets (0 == use the default).

Definition at line 296 of file TargetOptions.h.

Referenced by llvm::AArch64TargetMachine::AArch64TargetMachine().

◆ TrapUnreachable

unsigned llvm::TargetOptions::TrapUnreachable

◆ UniqueBasicBlockSectionNames

unsigned llvm::TargetOptions::UniqueBasicBlockSectionNames

Use unique names for basic block sections.

Definition at line 283 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getUniqueBasicBlockSectionNames().

◆ UniqueSectionNames

unsigned llvm::TargetOptions::UniqueSectionNames

◆ UnsafeFPMath

unsigned llvm::TargetOptions::UnsafeFPMath

UnsafeFPMath - This flag is enabled when the -enable-unsafe-fp-math flag is specified on the command line.

When this flag is off (the default), the code generator is not allowed to produce results that are "less precise" than IEEE allows. This includes use of X86 instructions like FSIN and FCOS instead of libcalls.

Definition at line 178 of file TargetOptions.h.

Referenced by llvm::NVPTXTargetLowering::allowUnsafeFPMath(), llvm::GCNTTIImpl::getArithmeticInstrCost(), HonorSignDependentRoundingFPMath(), llvm::AArch64InstrInfo::isAssociativeAndCommutative(), llvm::AMDGPULegalizerInfo::legalizeFastUnsafeFDIV(), llvm::AMDGPULegalizerInfo::legalizeFastUnsafeFDIV64(), llvm::LegalizerHelper::lowerFPTRUNC_F64_TO_F16(), and llvm::NVPTXTargetLowering::usePrecSqrtF32().

◆ UseInitArray

unsigned llvm::TargetOptions::UseInitArray

UseInitArray - Use .init_array instead of .ctors for static constructors.

Definition at line 263 of file TargetOptions.h.

Referenced by llvm::AsmPrinter::emitXXStructorList(), llvm::TargetLoweringObjectFileELF::Initialize(), and llvm::orc::JITTargetMachineBuilder::JITTargetMachineBuilder().

◆ ValueTrackingVariableLocations

unsigned llvm::TargetOptions::ValueTrackingVariableLocations

Definition at line 352 of file TargetOptions.h.

◆ XCOFFReadOnlyPointers

unsigned llvm::TargetOptions::XCOFFReadOnlyPointers

When set to true, const objects with relocatable address values are put into the RO data section.

Definition at line 382 of file TargetOptions.h.

Referenced by llvm::TargetLoweringObjectFileXCOFF::getExplicitSectionGlobal(), and llvm::TargetLoweringObjectFileXCOFF::SelectSectionForGlobal().

◆ XCOFFTracebackTable

unsigned llvm::TargetOptions::XCOFFTracebackTable

Emit XCOFF traceback table.

Definition at line 278 of file TargetOptions.h.

Referenced by llvm::TargetMachine::getXCOFFTracebackTable().

◆ XRayFunctionIndex

unsigned llvm::TargetOptions::XRayFunctionIndex

Emit XRay Function Index section.

Definition at line 358 of file TargetOptions.h.

Referenced by llvm::AsmPrinter::emitXRayTable().


The documentation for this class was generated from the following files: