clang::CodeGenOptions Class Reference

CodeGenOptions - Track various options which control how the code is optimized and passed to the backend. More...

#include "clang/Frontend/CodeGenOptions.h"

Inheritance diagram for clang::CodeGenOptions:

Collaboration diagram for clang::CodeGenOptions:

Classes
struct	BitcodeFileToLink

Public Types
enum	InliningMethod { NormalInlining, OnlyHintInlining, OnlyAlwaysInlining }
enum	VectorLibrary { NoLibrary, Accelerate, SVML }
enum	ObjCDispatchMethodKind { Legacy = 0, NonLegacy = 1, Mixed = 2 }
enum	TLSModel { GeneralDynamicTLSModel, LocalDynamicTLSModel, InitialExecTLSModel, LocalExecTLSModel }
enum	ClangABI { ClangABI::Ver3_8, ClangABI::Ver4, ClangABI::Latest }
	Clang versions with different platform ABI conformance. More...
enum	StructReturnConventionKind { SRCK_Default, SRCK_OnStack, SRCK_InRegs }
enum	ProfileInstrKind { ProfileNone, ProfileClangInstr, ProfileIRInstr }
enum	EmbedBitcodeKind { Embed_Off, Embed_All, Embed_Bitcode, Embed_Marker }
enum	SignReturnAddressScope { None, NonLeaf, All }

Public Member Functions
	CodeGenOptions ()
bool	isNoBuiltinFunc (const char *Name) const
	Is this a libc/libm function that is no longer recognized as a builtin because a -fno-builtin-* option has been specified? More...
const std::vector< std::string > &	getNoBuiltinFuncs () const
bool	hasProfileClangInstr () const
	Check if Clang profile instrumenation is on. More...
bool	hasProfileIRInstr () const
	Check if IR level profile instrumentation is on. More...
bool	hasProfileClangUse () const
	Check if Clang profile use is on. More...
bool	hasProfileIRUse () const
	Check if IR level profile use is on. More...

Public Attributes
std::string	CodeModel
	The code model to use (-mcmodel). More...
std::string	CoverageDataFile
	The filename with path we use for coverage data files. More...
std::string	CoverageNotesFile
	The filename with path we use for coverage notes files. More...
char	CoverageVersion [4]
	The version string to put into coverage files. More...
std::string	DebugPass
	Enable additional debugging information. More...
std::string	DebugCompilationDir
	The string to embed in debug information as the current working directory. More...
std::string	DwarfDebugFlags
	The string to embed in the debug information for the compile unit, if non-empty. More...
std::map< std::string, std::string >	DebugPrefixMap
std::string	FloatABI
	The ABI to use for passing floating point arguments. More...
std::string	FPDenormalMode
	The floating-point denormal mode to use. More...
std::string	LimitFloatPrecision
	The float precision limit to use, if non-empty. More...
std::vector< BitcodeFileToLink >	LinkBitcodeFiles
	The files specified here are linked in to the module before optimizations. More...
std::string	MainFileName
	The user provided name for the "main file", if non-empty. More...
std::string	SplitDwarfFile
	The name for the split debug info file that we'll break out. More...
llvm::Reloc::Model	RelocationModel
	The name of the relocation model to use. More...
std::string	ThreadModel
	The thread model to use. More...
std::string	TrapFuncName
	If not an empty string, trap intrinsics are lowered to calls to this function instead of to trap instructions. More...
std::vector< std::string >	DependentLibraries
	A list of dependent libraries. More...
std::vector< std::string >	LinkerOptions
	A list of linker options to embed in the object file. More...
std::string	InstrProfileOutput
	Name of the profile file to use as output for -fprofile-instr-generate and -fprofile-generate. More...
std::string	SampleProfileFile
	Name of the profile file to use with -fprofile-sample-use. More...
std::string	ProfileInstrumentUsePath
	Name of the profile file to use as input for -fprofile-instr-use. More...
std::string	ThinLTOIndexFile
	Name of the function summary index file to use for ThinLTO function importing. More...
std::string	ThinLinkBitcodeFile
	Name of a file that can optionally be written with minimized bitcode to be used as input for the ThinLTO thin link step, which only needs the summary and module symbol table (and not, e.g. More...
std::string	SaveTempsFilePrefix
	Prefix to use for -save-temps output. More...
std::string	CudaGpuBinaryFileName
	Name of file passed with -fcuda-include-gpubinary option to forward to CUDA runtime back-end for incorporating them into host-side object file. More...
std::string	OptRecordFile
	The name of the file to which the backend should save YAML optimization records. More...
std::shared_ptr< llvm::Regex >	OptimizationRemarkPattern
	Regular expression to select optimizations for which we should enable optimization remarks. More...
std::shared_ptr< llvm::Regex >	OptimizationRemarkMissedPattern
	Regular expression to select optimizations for which we should enable missed optimization remarks. More...
std::shared_ptr< llvm::Regex >	OptimizationRemarkAnalysisPattern
	Regular expression to select optimizations for which we should enable optimization analyses. More...
std::vector< std::string >	RewriteMapFiles
	Set of files defining the rules for the symbol rewriting. More...
SanitizerSet	SanitizeRecover
	Set of sanitizer checks that are non-fatal (i.e. More...
SanitizerSet	SanitizeTrap
	Set of sanitizer checks that trap rather than diagnose. More...
std::vector< uint8_t >	CmdArgs
	List of backend command-line options for -fembed-bitcode. More...
std::vector< std::string >	NoBuiltinFuncs
	A list of all -fno-builtin-* function names (e.g., memset). More...
std::vector< std::string >	Reciprocals
std::string	PreferVectorWidth
	The preferred width for auto-vectorization transforms. More...
XRayInstrSet	XRayInstrumentationBundle
	Set of XRay instrumentation kinds to emit. More...

Detailed Description

CodeGenOptions - Track various options which control how the code is optimized and passed to the backend.

Definition at line 46 of file CodeGenOptions.h.

Member Enumeration Documentation

ClangABI

enum clang::CodeGenOptions::ClangABI

strong

Clang versions with different platform ABI conformance.

Enumerator
Ver3_8	Attempt to be ABI-compatible with code generated by Clang 3.8.x (SVN r257626). This causes <1 x long long> to be passed in an integer register instead of an SSE register on x64_64.
Ver4	Attempt to be ABI-compatible with code generated by Clang 4.0.x (SVN r291814). This causes move operations to be ignored when determining whether a class type can be passed or returned directly.
Latest	Conform to the underlying platform's C and C++ ABIs as closely as we can.

Definition at line 75 of file CodeGenOptions.h.

EmbedBitcodeKind

enum clang::CodeGenOptions::EmbedBitcodeKind

Enumerator
Embed_Off
Embed_All
Embed_Bitcode
Embed_Marker

Definition at line 104 of file CodeGenOptions.h.

InliningMethod

enum clang::CodeGenOptions::InliningMethod

Enumerator
NormalInlining
OnlyHintInlining
OnlyAlwaysInlining

Definition at line 48 of file CodeGenOptions.h.

ObjCDispatchMethodKind

enum clang::CodeGenOptions::ObjCDispatchMethodKind

Enumerator
Legacy
NonLegacy
Mixed

Definition at line 61 of file CodeGenOptions.h.

ProfileInstrKind

enum clang::CodeGenOptions::ProfileInstrKind

Enumerator
ProfileNone
ProfileClangInstr
ProfileIRInstr

Definition at line 97 of file CodeGenOptions.h.

SignReturnAddressScope

enum clang::CodeGenOptions::SignReturnAddressScope

Enumerator
None
NonLeaf
All

Definition at line 111 of file CodeGenOptions.h.

StructReturnConventionKind

enum clang::CodeGenOptions::StructReturnConventionKind

Enumerator
SRCK_Default
SRCK_OnStack
SRCK_InRegs

Definition at line 91 of file CodeGenOptions.h.

TLSModel

enum clang::CodeGenOptions::TLSModel

Enumerator
GeneralDynamicTLSModel
LocalDynamicTLSModel
InitialExecTLSModel
LocalExecTLSModel

Definition at line 67 of file CodeGenOptions.h.

VectorLibrary

enum clang::CodeGenOptions::VectorLibrary

Enumerator
NoLibrary
Accelerate
SVML

Definition at line 54 of file CodeGenOptions.h.

Constructor & Destructor Documentation

CodeGenOptions()

clang::CodeGenOptions::CodeGenOptions

(

)

Definition at line 15 of file CodeGenOptions.cpp.

References CoverageVersion, memcpy(), and RelocationModel.

Member Function Documentation

getNoBuiltinFuncs()

const std::vector<std::string>& clang::CodeGenOptions::getNoBuiltinFuncs ( ) const

inline

Definition at line 285 of file CodeGenOptions.h.

Referenced by createTLII().

hasProfileClangInstr()

bool clang::CodeGenOptions::hasProfileClangInstr ( ) const

inline

Check if Clang profile instrumenation is on.

Definition at line 290 of file CodeGenOptions.h.

Referenced by clang::CodeGen::CodeGenFunction::incrementProfileCounter().

hasProfileClangUse()

bool clang::CodeGenOptions::hasProfileClangUse ( ) const

inline

Check if Clang profile use is on.

Definition at line 300 of file CodeGenOptions.h.

hasProfileIRInstr()

bool clang::CodeGenOptions::hasProfileIRInstr ( ) const

inline

Check if IR level profile instrumentation is on.

Definition at line 295 of file CodeGenOptions.h.

Referenced by mapToLevel().

hasProfileIRUse()

bool clang::CodeGenOptions::hasProfileIRUse ( ) const

inline

Check if IR level profile use is on.

Definition at line 305 of file CodeGenOptions.h.

Referenced by mapToLevel().

isNoBuiltinFunc()

bool clang::CodeGenOptions::isNoBuiltinFunc

(

const char *

Name

)

const

Is this a libc/libm function that is no longer recognized as a builtin because a -fno-builtin-* option has been specified?

Definition at line 24 of file CodeGenOptions.cpp.

Member Data Documentation

CmdArgs

std::vector<uint8_t> clang::CodeGenOptions::CmdArgs

List of backend command-line options for -fembed-bitcode.

Definition at line 256 of file CodeGenOptions.h.

Referenced by clang::EmbedBitcode().

CodeModel

std::string clang::CodeGenOptions::CodeModel

The code model to use (-mcmodel).

Definition at line 118 of file CodeGenOptions.h.

Referenced by getCodeModel().

CoverageDataFile

std::string clang::CodeGenOptions::CoverageDataFile

The filename with path we use for coverage data files.

The runtime allows further manipulation with the GCOV_PREFIX and GCOV_PREFIX_STRIP environment variables.

Definition at line 123 of file CodeGenOptions.h.

CoverageNotesFile

std::string clang::CodeGenOptions::CoverageNotesFile

The filename with path we use for coverage notes files.

Definition at line 126 of file CodeGenOptions.h.

CoverageVersion

char clang::CodeGenOptions::CoverageVersion[4]

The version string to put into coverage files.

Definition at line 129 of file CodeGenOptions.h.

Referenced by CodeGenOptions().

CudaGpuBinaryFileName

std::string clang::CodeGenOptions::CudaGpuBinaryFileName

Name of file passed with -fcuda-include-gpubinary option to forward to CUDA runtime back-end for incorporating them into host-side object file.

Definition at line 217 of file CodeGenOptions.h.

DebugCompilationDir

std::string clang::CodeGenOptions::DebugCompilationDir

The string to embed in debug information as the current working directory.

Definition at line 135 of file CodeGenOptions.h.

DebugPass

std::string clang::CodeGenOptions::DebugPass

Enable additional debugging information.

Definition at line 132 of file CodeGenOptions.h.

Referenced by setCommandLineOpts().

DebugPrefixMap

std::map<std::string, std::string> clang::CodeGenOptions::DebugPrefixMap

Definition at line 141 of file CodeGenOptions.h.

Referenced by clang::CodeGen::CGDebugInfo::CGDebugInfo().

DependentLibraries

std::vector<std::string> clang::CodeGenOptions::DependentLibraries

A list of dependent libraries.

Definition at line 188 of file CodeGenOptions.h.

DwarfDebugFlags

std::string clang::CodeGenOptions::DwarfDebugFlags

The string to embed in the debug information for the compile unit, if non-empty.

Definition at line 139 of file CodeGenOptions.h.

Referenced by SetUpDiagnosticLog().

FloatABI

std::string clang::CodeGenOptions::FloatABI

The ABI to use for passing floating point arguments.

Definition at line 144 of file CodeGenOptions.h.

FPDenormalMode

std::string clang::CodeGenOptions::FPDenormalMode

The floating-point denormal mode to use.

Definition at line 147 of file CodeGenOptions.h.

InstrProfileOutput

std::string clang::CodeGenOptions::InstrProfileOutput

Name of the profile file to use as output for -fprofile-instr-generate and -fprofile-generate.

Definition at line 195 of file CodeGenOptions.h.

Referenced by mapToLevel().

LimitFloatPrecision

std::string clang::CodeGenOptions::LimitFloatPrecision

The float precision limit to use, if non-empty.

Definition at line 150 of file CodeGenOptions.h.

Referenced by setCommandLineOpts().

LinkBitcodeFiles

std::vector<BitcodeFileToLink> clang::CodeGenOptions::LinkBitcodeFiles

The files specified here are linked in to the module before optimizations.

Definition at line 166 of file CodeGenOptions.h.

Referenced by clang::CodeGenAction::CreateASTConsumer().

LinkerOptions

std::vector<std::string> clang::CodeGenOptions::LinkerOptions

A list of linker options to embed in the object file.

Definition at line 191 of file CodeGenOptions.h.

MainFileName

std::string clang::CodeGenOptions::MainFileName

The user provided name for the "main file", if non-empty.

This is useful in situations where the input file name does not match the original input file, for example with -save-temps.

Definition at line 171 of file CodeGenOptions.h.

NoBuiltinFuncs

std::vector<std::string> clang::CodeGenOptions::NoBuiltinFuncs

A list of all -fno-builtin-* function names (e.g., memset).

Definition at line 259 of file CodeGenOptions.h.

OptimizationRemarkAnalysisPattern

std::shared_ptr<llvm::Regex> clang::CodeGenOptions::OptimizationRemarkAnalysisPattern

Regular expression to select optimizations for which we should enable optimization analyses.

Transformation passes whose name matches this expression (and support this feature), will emit a diagnostic whenever they want to explain why they decided to apply or not apply a given transformation. This is enabled by the -Rpass-analysis=regexp flag.

Definition at line 243 of file CodeGenOptions.h.

OptimizationRemarkMissedPattern

std::shared_ptr<llvm::Regex> clang::CodeGenOptions::OptimizationRemarkMissedPattern

Regular expression to select optimizations for which we should enable missed optimization remarks.

Transformation passes whose name matches this expression (and support this feature), will emit a diagnostic whenever they tried but failed to perform a transformation. This is enabled by the -Rpass-missed=regexp flag.

Definition at line 235 of file CodeGenOptions.h.

OptimizationRemarkPattern

std::shared_ptr<llvm::Regex> clang::CodeGenOptions::OptimizationRemarkPattern

Regular expression to select optimizations for which we should enable optimization remarks.

Transformation passes whose name matches this expression (and support this feature), will emit a diagnostic whenever they perform a transformation. This is enabled by the -Rpass=regexp flag.

Definition at line 228 of file CodeGenOptions.h.

OptRecordFile

std::string clang::CodeGenOptions::OptRecordFile

The name of the file to which the backend should save YAML optimization records.

Definition at line 221 of file CodeGenOptions.h.

PreferVectorWidth

std::string clang::CodeGenOptions::PreferVectorWidth

The preferred width for auto-vectorization transforms.

This is intended to override default transforms based on the width of the architected vector registers.

Definition at line 266 of file CodeGenOptions.h.

ProfileInstrumentUsePath

std::string clang::CodeGenOptions::ProfileInstrumentUsePath

Name of the profile file to use as input for -fprofile-instr-use.

Definition at line 201 of file CodeGenOptions.h.

Referenced by mapToLevel().

Reciprocals

std::vector<std::string> clang::CodeGenOptions::Reciprocals

Definition at line 261 of file CodeGenOptions.h.

RelocationModel

llvm::Reloc::Model clang::CodeGenOptions::RelocationModel

The name of the relocation model to use.

Definition at line 178 of file CodeGenOptions.h.

Referenced by CodeGenOptions(), setCommandLineOpts(), and shouldAssumeDSOLocal().

RewriteMapFiles

std::vector<std::string> clang::CodeGenOptions::RewriteMapFiles

Set of files defining the rules for the symbol rewriting.

Definition at line 246 of file CodeGenOptions.h.

Referenced by addSymbolRewriterPass().

SampleProfileFile

std::string clang::CodeGenOptions::SampleProfileFile

Name of the profile file to use with -fprofile-sample-use.

Definition at line 198 of file CodeGenOptions.h.

Referenced by mapToLevel().

SanitizeRecover

SanitizerSet clang::CodeGenOptions::SanitizeRecover

Set of sanitizer checks that are non-fatal (i.e.

execution should be continued when possible).

Definition at line 250 of file CodeGenOptions.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitCheck().

SanitizeTrap

SanitizerSet clang::CodeGenOptions::SanitizeTrap

Set of sanitizer checks that trap rather than diagnose.

Definition at line 253 of file CodeGenOptions.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitCfiSlowPathCheck(), and clang::CodeGen::CodeGenFunction::EmitCheck().

SaveTempsFilePrefix

std::string clang::CodeGenOptions::SaveTempsFilePrefix

Prefix to use for -save-temps output.

Definition at line 213 of file CodeGenOptions.h.

SplitDwarfFile

std::string clang::CodeGenOptions::SplitDwarfFile

The name for the split debug info file that we'll break out.

This is used in the backend for setting the name in the skeleton cu.

Definition at line 175 of file CodeGenOptions.h.

ThinLinkBitcodeFile

std::string clang::CodeGenOptions::ThinLinkBitcodeFile

Name of a file that can optionally be written with minimized bitcode to be used as input for the ThinLTO thin link step, which only needs the summary and module symbol table (and not, e.g.

any debug metadata).

Definition at line 210 of file CodeGenOptions.h.

ThinLTOIndexFile

std::string clang::CodeGenOptions::ThinLTOIndexFile

Name of the function summary index file to use for ThinLTO function importing.

Definition at line 205 of file CodeGenOptions.h.

ThreadModel

std::string clang::CodeGenOptions::ThreadModel

The thread model to use.

Definition at line 181 of file CodeGenOptions.h.

TrapFuncName

std::string clang::CodeGenOptions::TrapFuncName

If not an empty string, trap intrinsics are lowered to calls to this function instead of to trap instructions.

Definition at line 185 of file CodeGenOptions.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitTrapCall().

XRayInstrumentationBundle

XRayInstrSet clang::CodeGenOptions::XRayInstrumentationBundle

Set of XRay instrumentation kinds to emit.

Definition at line 269 of file CodeGenOptions.h.

Referenced by clang::CodeGen::CodeGenFunction::AlwaysEmitXRayCustomEvents(), clang::CodeGen::CodeGenFunction::AlwaysEmitXRayTypedEvents(), and clang::CodeGen::CodeGenFunction::StartFunction().

---

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

• include/clang/Frontend/CodeGenOptions.h
• lib/Frontend/CodeGenOptions.cpp