llvm::VecDesc Class Reference

Provides info so a possible vectorization of a function can be computed. More...

#include "llvm/Analysis/TargetLibraryInfo.h"

Public Member Functions
	VecDesc ()=delete
	VecDesc (StringRef ScalarFnName, StringRef VectorFnName, ElementCount VectorizationFactor, bool Masked, StringRef VABIPrefix)
StringRef	getScalarFnName () const
StringRef	getVectorFnName () const
ElementCount	getVectorizationFactor () const
bool	isMasked () const
StringRef	getVABIPrefix () const
std::string	getVectorFunctionABIVariantString () const
	Returns a vector function ABI variant string on the form: ZGV<isa><mask><vlen><vparams><scalarname>(<vectorname>)

Detailed Description

Provides info so a possible vectorization of a function can be computed.

Function 'VectorFnName' is equivalent to 'ScalarFnName' vectorized by a factor 'VectorizationFactor'. The VABIPrefix string holds information about isa, mask, vlen, and vparams so a scalar-to-vector mapping of the form: ZGV<isa><mask><vlen><vparams><scalarname>(<vectorname>) can be constructed where:

<isa> = "_LLVM_" <mask> = "M" if masked, "N" if no mask. <vlen> = Number of concurrent lanes, stored in the VectorizationFactor field of the VecDesc struct. If the number of lanes is scalable then 'x' is printed instead. <vparams> = "v", as many as are the numArgs. <scalarname> = the name of the scalar function. <vectorname> = the name of the vector function.

Definition at line 43 of file TargetLibraryInfo.h.

Constructor & Destructor Documentation

VecDesc() [1/2]

llvm::VecDesc::VecDesc ( )

delete

VecDesc() [2/2]

llvm::VecDesc::VecDesc ( StringRef  ScalarFnName, StringRef  VectorFnName, ElementCount  VectorizationFactor, bool  Masked, StringRef  VABIPrefix  )

inline

Definition at line 52 of file TargetLibraryInfo.h.

Member Function Documentation

getScalarFnName()

StringRef llvm::VecDesc::getScalarFnName ( ) const

inline

Definition at line 58 of file TargetLibraryInfo.h.

getVABIPrefix()

StringRef llvm::VecDesc::getVABIPrefix ( ) const

inline

Definition at line 62 of file TargetLibraryInfo.h.

getVectorFnName()

StringRef llvm::VecDesc::getVectorFnName ( ) const

inline

Definition at line 59 of file TargetLibraryInfo.h.

Referenced by addMappingsFromTLI(), addVariantDeclaration(), llvm::TargetLibraryInfoImpl::getVectorizedFunction(), and replaceWithCallToVeclib().

getVectorFunctionABIVariantString()

std::string VecDesc::getVectorFunctionABIVariantString

(

)

const

Returns a vector function ABI variant string on the form: ZGV<isa><mask><vlen><vparams><scalarname>(<vectorname>)

Definition at line 50 of file TargetLibraryInfo.cpp.

References assert(), llvm::StringRef::empty(), and llvm::raw_svector_ostream::str().

Referenced by addMappingsFromTLI(), addVariantDeclaration(), and replaceWithCallToVeclib().

getVectorizationFactor()

ElementCount llvm::VecDesc::getVectorizationFactor ( ) const

inline

Definition at line 60 of file TargetLibraryInfo.h.

isMasked()

bool llvm::VecDesc::isMasked ( ) const

inline

Definition at line 61 of file TargetLibraryInfo.h.

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

• include/llvm/Analysis/TargetLibraryInfo.h
• lib/Analysis/TargetLibraryInfo.cpp