LLVM  13.0.0git
Public Member Functions | Friends | List of all members
llvm::TargetLibraryInfo Class Reference

Provides information about what library functions are available for the current target. More...

#include "llvm/Analysis/TargetLibraryInfo.h"

Public Member Functions

 TargetLibraryInfo (const TargetLibraryInfoImpl &Impl, Optional< const Function * > F=None)
 
 TargetLibraryInfo (const TargetLibraryInfo &TLI)
 
 TargetLibraryInfo (TargetLibraryInfo &&TLI)
 
TargetLibraryInfooperator= (const TargetLibraryInfo &TLI)
 
TargetLibraryInfooperator= (TargetLibraryInfo &&TLI)
 
bool areInlineCompatible (const TargetLibraryInfo &CalleeTLI, bool AllowCallerSuperset) const
 Determine whether a callee with the given TLI can be inlined into caller with this TLI, based on 'nobuiltin' attributes. More...
 
bool getLibFunc (StringRef funcName, LibFunc &F) const
 Searches for a particular function name. More...
 
bool getLibFunc (const Function &FDecl, LibFunc &F) const
 
bool getLibFunc (const CallBase &CB, LibFunc &F) const
 If a callbase does not have the 'nobuiltin' attribute, return if the called function is a known library function and set F to that function. More...
 
void disableAllFunctions () LLVM_ATTRIBUTE_UNUSED
 Disables all builtins. More...
 
void setUnavailable (LibFunc F) LLVM_ATTRIBUTE_UNUSED
 Forces a function to be marked as unavailable. More...
 
TargetLibraryInfoImpl::AvailabilityState getState (LibFunc F) const
 
bool has (LibFunc F) const
 Tests whether a library function is available. More...
 
bool isFunctionVectorizable (StringRef F, const ElementCount &VF) const
 
bool isFunctionVectorizable (StringRef F) const
 
StringRef getVectorizedFunction (StringRef F, const ElementCount &VF) const
 
bool hasOptimizedCodeGen (LibFunc F) const
 Tests if the function is both available and a candidate for optimized code generation. More...
 
StringRef getName (LibFunc F) const
 
Attribute::AttrKind getExtAttrForI32Param (bool Signed=true) const
 Returns extension attribute kind to be used for i32 parameters corresponding to C-level int or unsigned int. More...
 
Attribute::AttrKind getExtAttrForI32Return (bool Signed=true) const
 Returns extension attribute kind to be used for i32 return values corresponding to C-level int or unsigned int. More...
 
unsigned getWCharSize (const Module &M) const
 Returns the size of the wchar_t type in bytes or 0 if the size is unknown. More...
 
bool invalidate (Module &, const PreservedAnalyses &, ModuleAnalysisManager::Invalidator &)
 Handle invalidation from the pass manager. More...
 
bool invalidate (Function &, const PreservedAnalyses &, FunctionAnalysisManager::Invalidator &)
 
void getWidestVF (StringRef ScalarF, ElementCount &FixedVF, ElementCount &ScalableVF) const
 Returns the largest vectorization factor used in the list of vector functions. More...
 
bool isKnownVectorFunctionInLibrary (StringRef F) const
 Check if the function "F" is listed in a library known to LLVM. More...
 

Friends

class TargetLibraryAnalysis
 
class TargetLibraryInfoWrapperPass
 

Detailed Description

Provides information about what library functions are available for the current target.

This both allows optimizations to handle them specially and frontends to disable such optimizations through -fno-builtin etc.

Definition at line 207 of file TargetLibraryInfo.h.

Constructor & Destructor Documentation

◆ TargetLibraryInfo() [1/3]

llvm::TargetLibraryInfo::TargetLibraryInfo ( const TargetLibraryInfoImpl Impl,
Optional< const Function * >  F = None 
)
inlineexplicit

Definition at line 219 of file TargetLibraryInfo.h.

References disableAllFunctions(), F, getLibFunc(), and setUnavailable().

◆ TargetLibraryInfo() [2/3]

llvm::TargetLibraryInfo::TargetLibraryInfo ( const TargetLibraryInfo TLI)
inline

Definition at line 243 of file TargetLibraryInfo.h.

◆ TargetLibraryInfo() [3/3]

llvm::TargetLibraryInfo::TargetLibraryInfo ( TargetLibraryInfo &&  TLI)
inline

Definition at line 245 of file TargetLibraryInfo.h.

Member Function Documentation

◆ areInlineCompatible()

bool llvm::TargetLibraryInfo::areInlineCompatible ( const TargetLibraryInfo CalleeTLI,
bool  AllowCallerSuperset 
) const
inline

Determine whether a callee with the given TLI can be inlined into caller with this TLI, based on 'nobuiltin' attributes.

When requested, allow inlining into a caller with a superset of the callee's nobuiltin attributes, which is conservatively correct.

Definition at line 262 of file TargetLibraryInfo.h.

References B.

◆ disableAllFunctions()

void llvm::TargetLibraryInfo::disableAllFunctions ( )
inline

Disables all builtins.

This can be used for options like -fno-builtin.

Definition at line 295 of file TargetLibraryInfo.h.

References llvm::BitVector::set().

Referenced by TargetLibraryInfo().

◆ getExtAttrForI32Param()

Attribute::AttrKind llvm::TargetLibraryInfo::getExtAttrForI32Param ( bool  Signed = true) const
inline

Returns extension attribute kind to be used for i32 parameters corresponding to C-level int or unsigned int.

May be zeroext, signext, or none.

Definition at line 370 of file TargetLibraryInfo.h.

References llvm::Attribute::None, and Signed.

Referenced by getOrInsertValueProfilingCall().

◆ getExtAttrForI32Return()

Attribute::AttrKind llvm::TargetLibraryInfo::getExtAttrForI32Return ( bool  Signed = true) const
inline

Returns extension attribute kind to be used for i32 return values corresponding to C-level int or unsigned int.

May be zeroext, signext, or none.

Definition at line 381 of file TargetLibraryInfo.h.

References llvm::Attribute::None, and Signed.

◆ getLibFunc() [1/3]

bool llvm::TargetLibraryInfo::getLibFunc ( const CallBase CB,
LibFunc F 
) const
inline

If a callbase does not have the 'nobuiltin' attribute, return if the called function is a known library function and set F to that function.

Definition at line 287 of file TargetLibraryInfo.h.

References F, llvm::CallBase::getCalledFunction(), getLibFunc(), and llvm::CallBase::isNoBuiltin().

◆ getLibFunc() [2/3]

bool llvm::TargetLibraryInfo::getLibFunc ( const Function FDecl,
LibFunc F 
) const
inline

Definition at line 281 of file TargetLibraryInfo.h.

References F, and llvm::TargetLibraryInfoImpl::getLibFunc().

◆ getLibFunc() [3/3]

bool llvm::TargetLibraryInfo::getLibFunc ( StringRef  funcName,
LibFunc F 
) const
inline

◆ getName()

StringRef llvm::TargetLibraryInfo::getName ( LibFunc  F) const
inline

◆ getState()

TargetLibraryInfoImpl::AvailabilityState llvm::TargetLibraryInfo::getState ( LibFunc  F) const
inline

Definition at line 304 of file TargetLibraryInfo.h.

References F.

Referenced by getName(), has(), and hasOptimizedCodeGen().

◆ getVectorizedFunction()

StringRef llvm::TargetLibraryInfo::getVectorizedFunction ( StringRef  F,
const ElementCount VF 
) const
inline

◆ getWCharSize()

unsigned llvm::TargetLibraryInfo::getWCharSize ( const Module M) const
inline

Returns the size of the wchar_t type in bytes or 0 if the size is unknown.

This queries the 'wchar_size' metadata.

Definition at line 388 of file TargetLibraryInfo.h.

References llvm::TargetLibraryInfoImpl::getWCharSize(), and M.

◆ getWidestVF()

void llvm::TargetLibraryInfo::getWidestVF ( StringRef  ScalarF,
ElementCount FixedVF,
ElementCount ScalableVF 
) const
inline

Returns the largest vectorization factor used in the list of vector functions.

Definition at line 406 of file TargetLibraryInfo.h.

References llvm::TargetLibraryInfoImpl::getWidestVF().

Referenced by addMappingsFromTLI(), and llvm::isTLIScalarize().

◆ has()

bool llvm::TargetLibraryInfo::has ( LibFunc  F) const
inline

◆ hasOptimizedCodeGen()

bool llvm::TargetLibraryInfo::hasOptimizedCodeGen ( LibFunc  F) const
inline

Tests if the function is both available and a candidate for optimized code generation.

Definition at line 326 of file TargetLibraryInfo.h.

References F, and getState().

Referenced by llvm::maybeMarkSanitizerLibraryCallNoBuiltin().

◆ invalidate() [1/2]

bool llvm::TargetLibraryInfo::invalidate ( Function ,
const PreservedAnalyses ,
FunctionAnalysisManager::Invalidator  
)
inline

Definition at line 400 of file TargetLibraryInfo.h.

◆ invalidate() [2/2]

bool llvm::TargetLibraryInfo::invalidate ( Module ,
const PreservedAnalyses ,
ModuleAnalysisManager::Invalidator  
)
inline

Handle invalidation from the pass manager.

If we try to invalidate this info, just return false. It cannot become invalid even if the module or function changes.

Definition at line 396 of file TargetLibraryInfo.h.

◆ isFunctionVectorizable() [1/2]

bool llvm::TargetLibraryInfo::isFunctionVectorizable ( StringRef  F) const
inline

◆ isFunctionVectorizable() [2/2]

bool llvm::TargetLibraryInfo::isFunctionVectorizable ( StringRef  F,
const ElementCount VF 
) const
inline

◆ isKnownVectorFunctionInLibrary()

bool llvm::TargetLibraryInfo::isKnownVectorFunctionInLibrary ( StringRef  F) const
inline

Check if the function "F" is listed in a library known to LLVM.

Definition at line 412 of file TargetLibraryInfo.h.

References isFunctionVectorizable().

Referenced by isKnownLibFunction().

◆ operator=() [1/2]

TargetLibraryInfo& llvm::TargetLibraryInfo::operator= ( const TargetLibraryInfo TLI)
inline

Definition at line 247 of file TargetLibraryInfo.h.

◆ operator=() [2/2]

TargetLibraryInfo& llvm::TargetLibraryInfo::operator= ( TargetLibraryInfo &&  TLI)
inline

Definition at line 252 of file TargetLibraryInfo.h.

◆ setUnavailable()

void llvm::TargetLibraryInfo::setUnavailable ( LibFunc  F)
inline

Forces a function to be marked as unavailable.

Definition at line 300 of file TargetLibraryInfo.h.

References F, and llvm::BitVector::set().

Referenced by TargetLibraryInfo().

Friends And Related Function Documentation

◆ TargetLibraryAnalysis

friend class TargetLibraryAnalysis
friend

Definition at line 208 of file TargetLibraryInfo.h.

◆ TargetLibraryInfoWrapperPass

friend class TargetLibraryInfoWrapperPass
friend

Definition at line 209 of file TargetLibraryInfo.h.


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