BuildLibCalls.cpp File Reference

#include "llvm/Transforms/Utils/BuildLibCalls.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Analysis/MemoryBuiltins.h"
#include "llvm/Analysis/TargetLibraryInfo.h"
#include "llvm/IR/Argument.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/TypeSize.h"
#include <optional>

Go to the source code of this file.

Macros
#define	DEBUG_TYPE   "build-libcalls"

Functions
	STATISTIC (NumReadNone, "Number of functions inferred as readnone")
	STATISTIC (NumInaccessibleMemOnly, "Number of functions inferred as inaccessiblememonly")
	STATISTIC (NumReadOnly, "Number of functions inferred as readonly")
	STATISTIC (NumWriteOnly, "Number of functions inferred as writeonly")
	STATISTIC (NumArgMemOnly, "Number of functions inferred as argmemonly")
	STATISTIC (NumInaccessibleMemOrArgMemOnly, "Number of functions inferred as inaccessiblemem_or_argmemonly")
	STATISTIC (NumNoUnwind, "Number of functions inferred as nounwind")
	STATISTIC (NumNoCapture, "Number of arguments inferred as nocapture")
	STATISTIC (NumWriteOnlyArg, "Number of arguments inferred as writeonly")
	STATISTIC (NumReadOnlyArg, "Number of arguments inferred as readonly")
	STATISTIC (NumNoAlias, "Number of function returns inferred as noalias")
	STATISTIC (NumNoUndef, "Number of function returns inferred as noundef returns")
	STATISTIC (NumReturnedArg, "Number of arguments inferred as returned")
	STATISTIC (NumWillReturn, "Number of functions inferred as willreturn")
static bool	setDoesNotAccessMemory (Function &F)
static bool	setOnlyAccessesInaccessibleMemory (Function &F)
static bool	setOnlyReadsMemory (Function &F)
static bool	setOnlyWritesMemory (Function &F)
static bool	setOnlyAccessesArgMemory (Function &F)
static bool	setOnlyAccessesInaccessibleMemOrArgMem (Function &F)
static bool	setDoesNotThrow (Function &F)
static bool	setRetDoesNotAlias (Function &F)
static bool	setDoesNotCapture (Function &F, unsigned ArgNo)
static bool	setDoesNotAlias (Function &F, unsigned ArgNo)
static bool	setOnlyReadsMemory (Function &F, unsigned ArgNo)
static bool	setOnlyWritesMemory (Function &F, unsigned ArgNo)
static bool	setRetNoUndef (Function &F)
static bool	setArgsNoUndef (Function &F)
static bool	setArgNoUndef (Function &F, unsigned ArgNo)
static bool	setRetAndArgsNoUndef (Function &F)
static bool	setReturnedArg (Function &F, unsigned ArgNo)
static bool	setNonLazyBind (Function &F)
static bool	setDoesNotFreeMemory (Function &F)
static bool	setWillReturn (Function &F)
static bool	setAlignedAllocParam (Function &F, unsigned ArgNo)
static bool	setAllocatedPointerParam (Function &F, unsigned ArgNo)
static bool	setAllocSize (Function &F, unsigned ElemSizeArg, std::optional< unsigned > NumElemsArg)
static bool	setAllocFamily (Function &F, StringRef Family)
static bool	setAllocKind (Function &F, AllocFnKind K)
static void	setArgExtAttr (Function &F, unsigned ArgNo, const TargetLibraryInfo &TLI, bool Signed=true)
static void	setRetExtAttr (Function &F, const TargetLibraryInfo &TLI, bool Signed=true)
static void	markRegisterParameterAttributes (Function *F)
static IntegerType *	getIntTy (IRBuilderBase &B, const TargetLibraryInfo *TLI)
static IntegerType *	getSizeTTy (IRBuilderBase &B, const TargetLibraryInfo *TLI)
static Value *	emitLibCall (LibFunc TheLibFunc, Type *ReturnType, ArrayRef< Type * > ParamTypes, ArrayRef< Value * > Operands, IRBuilderBase &B, const TargetLibraryInfo *TLI, bool IsVaArgs=false)
static void	appendTypeSuffix (Value *Op, StringRef &Name, SmallString< 20 > &NameBuffer)
	Append a suffix to the function name according to the type of 'Op'.
static Value *	emitUnaryFloatFnCallHelper (Value *Op, LibFunc TheLibFunc, StringRef Name, IRBuilderBase &B, const AttributeList &Attrs, const TargetLibraryInfo *TLI)
static Value *	emitBinaryFloatFnCallHelper (Value *Op1, Value *Op2, LibFunc TheLibFunc, StringRef Name, IRBuilderBase &B, const AttributeList &Attrs, const TargetLibraryInfo *TLI)

Macro Definition Documentation

DEBUG_TYPE

#define DEBUG_TYPE   "build-libcalls"

Definition at line 31 of file BuildLibCalls.cpp.

Function Documentation

appendTypeSuffix()

static void appendTypeSuffix ( Value *  Op, StringRef &  Name, SmallString< 20 > &  NameBuffer  )

static

Append a suffix to the function name according to the type of 'Op'.

Definition at line 1681 of file BuildLibCalls.cpp.

References Name.

Referenced by llvm::emitBinaryFloatFnCall(), and llvm::emitUnaryFloatFnCall().

emitBinaryFloatFnCallHelper()

static Value * emitBinaryFloatFnCallHelper ( Value *  Op1, Value *  Op2, LibFunc  TheLibFunc, StringRef  Name, IRBuilderBase &  B, const AttributeList &  Attrs, const TargetLibraryInfo *  TLI  )

static

Definition at line 1743 of file BuildLibCalls.cpp.

References assert(), B, F, llvm::getOrInsertLibFunc(), llvm::Value::getType(), llvm::inferNonMandatoryLibFuncAttrs(), Name, llvm::CallBase::setAttributes(), and llvm::CallBase::setCallingConv().

Referenced by llvm::emitBinaryFloatFnCall().

emitLibCall()

static Value * emitLibCall ( LibFunc  TheLibFunc, Type *  ReturnType, ArrayRef< Type * >  ParamTypes, ArrayRef< Value * >  Operands, IRBuilderBase &  B, const TargetLibraryInfo *  TLI, bool  IsVaArgs = false  )

static

Definition at line 1437 of file BuildLibCalls.cpp.

References B, F, llvm::TargetLibraryInfo::getName(), llvm::getOrInsertLibFunc(), llvm::inferNonMandatoryLibFuncAttrs(), llvm::isLibFuncEmittable(), Operands, and llvm::CallBase::setCallingConv().

Referenced by llvm::emitBCmp(), llvm::emitMemCCpy(), llvm::emitMemChr(), llvm::emitMemCmp(), llvm::emitMemPCpy(), llvm::emitMemRChr(), llvm::emitSNPrintf(), llvm::emitSPrintf(), llvm::emitStpCpy(), llvm::emitStpNCpy(), llvm::emitStrCat(), llvm::emitStrChr(), llvm::emitStrCpy(), llvm::emitStrDup(), llvm::emitStrLCat(), llvm::emitStrLCpy(), llvm::emitStrLen(), llvm::emitStrNCat(), llvm::emitStrNCmp(), llvm::emitStrNCpy(), llvm::emitVSNPrintf(), and llvm::emitVSPrintf().

emitUnaryFloatFnCallHelper()

static Value * emitUnaryFloatFnCallHelper ( Value *  Op, LibFunc  TheLibFunc, StringRef  Name, IRBuilderBase &  B, const AttributeList &  Attrs, const TargetLibraryInfo *  TLI  )

static

Definition at line 1695 of file BuildLibCalls.cpp.

References assert(), B, F, llvm::getOrInsertLibFunc(), Name, llvm::CallBase::setAttributes(), and llvm::CallBase::setCallingConv().

Referenced by llvm::emitUnaryFloatFnCall().

getIntTy()

static IntegerType * getIntTy ( IRBuilderBase &  B, const TargetLibraryInfo *  TLI  )

static

Definition at line 1428 of file BuildLibCalls.cpp.

References B, and llvm::TargetLibraryInfo::getIntSize().

Referenced by llvm::emitBCmp(), llvm::emitFPutC(), llvm::emitFPutS(), llvm::emitMemCCpy(), llvm::emitMemChr(), llvm::emitMemCmp(), llvm::emitMemRChr(), llvm::emitPutChar(), llvm::emitPutS(), llvm::emitSNPrintf(), llvm::emitSPrintf(), llvm::emitStrChr(), llvm::emitStrNCmp(), llvm::emitVSNPrintf(), and llvm::emitVSPrintf().

getSizeTTy()

static IntegerType * getSizeTTy ( IRBuilderBase &  B, const TargetLibraryInfo *  TLI  )

static

Definition at line 1432 of file BuildLibCalls.cpp.

References B, and llvm::TargetLibraryInfo::getSizeTSize().

Referenced by llvm::emitBCmp(), llvm::emitCalloc(), llvm::emitFWrite(), llvm::emitMalloc(), llvm::emitMemCCpy(), llvm::emitMemChr(), llvm::emitMemCmp(), llvm::emitMemCpyChk(), llvm::emitMemPCpy(), llvm::emitMemRChr(), llvm::emitSNPrintf(), llvm::emitStpNCpy(), llvm::emitStrLCat(), llvm::emitStrLCpy(), llvm::emitStrLen(), llvm::emitStrNCat(), llvm::emitStrNCmp(), llvm::emitStrNCpy(), and llvm::emitVSNPrintf().

markRegisterParameterAttributes()

static void markRegisterParameterAttributes ( Function *  F )

static

Definition at line 1255 of file BuildLibCalls.cpp.

References A, assert(), llvm::CallingConv::C, CC, DL, F, N, and llvm::CallingConv::X86_StdCall.

Referenced by llvm::getOrInsertLibFunc().

setAlignedAllocParam()

static bool setAlignedAllocParam ( Function &  F, unsigned  ArgNo  )

static

Definition at line 215 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setAllocatedPointerParam()

static bool setAllocatedPointerParam ( Function &  F, unsigned  ArgNo  )

static

Definition at line 222 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setAllocFamily()

static bool setAllocFamily ( Function &  F, StringRef  Family  )

static

Definition at line 238 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setAllocKind()

static bool setAllocKind ( Function &  F, AllocFnKind  K  )

static

Definition at line 245 of file BuildLibCalls.cpp.

References F, and llvm::Attribute::get().

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setAllocSize()

static bool setAllocSize ( Function &  F, unsigned  ElemSizeArg, std::optional< unsigned >  NumElemsArg  )

static

Definition at line 229 of file BuildLibCalls.cpp.

References F, and llvm::Attribute::getWithAllocSizeArgs().

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setArgExtAttr()

static void setArgExtAttr ( Function &  F, unsigned  ArgNo, const TargetLibraryInfo &  TLI, bool  Signed = true  )

static

Definition at line 1240 of file BuildLibCalls.cpp.

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

Referenced by llvm::getOrInsertLibFunc().

setArgNoUndef()

static bool setArgNoUndef ( Function &  F, unsigned  ArgNo  )

static

Definition at line 170 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setArgsNoUndef()

static bool setArgsNoUndef ( Function &  F )

static

Definition at line 158 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs(), and setRetAndArgsNoUndef().

setDoesNotAccessMemory()

static bool setDoesNotAccessMemory ( Function &  F )

static

Definition at line 52 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setDoesNotAlias()

static bool setDoesNotAlias ( Function &  F, unsigned  ArgNo  )

static

Definition at line 124 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setDoesNotCapture()

static bool setDoesNotCapture ( Function &  F, unsigned  ArgNo  )

static

Definition at line 116 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setDoesNotFreeMemory()

static bool setDoesNotFreeMemory ( Function &  F )

static

Definition at line 200 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setDoesNotThrow()

static bool setDoesNotThrow ( Function &  F )

static

Definition at line 100 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setNonLazyBind()

static bool setNonLazyBind ( Function &  F )

static

Definition at line 193 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs(), and lowerObjCCall().

setOnlyAccessesArgMemory()

static bool setOnlyAccessesArgMemory ( Function &  F )

static

Definition at line 84 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setOnlyAccessesInaccessibleMemOrArgMem()

static bool setOnlyAccessesInaccessibleMemOrArgMem ( Function &  F )

static

Definition at line 92 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setOnlyAccessesInaccessibleMemory()

static bool setOnlyAccessesInaccessibleMemory ( Function &  F )

static

Definition at line 60 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setOnlyReadsMemory() [1/2]

static bool setOnlyReadsMemory ( Function &  F )

static

Definition at line 68 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setOnlyReadsMemory() [2/2]

static bool setOnlyReadsMemory ( Function &  F, unsigned  ArgNo  )

static

Definition at line 132 of file BuildLibCalls.cpp.

References F.

setOnlyWritesMemory() [1/2]

static bool setOnlyWritesMemory ( Function &  F )

static

Definition at line 76 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setOnlyWritesMemory() [2/2]

static bool setOnlyWritesMemory ( Function &  F, unsigned  ArgNo  )

static

Definition at line 140 of file BuildLibCalls.cpp.

References F.

setRetAndArgsNoUndef()

static bool setRetAndArgsNoUndef ( Function &  F )

static

Definition at line 178 of file BuildLibCalls.cpp.

References F, setArgsNoUndef(), and setRetNoUndef().

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setRetDoesNotAlias()

static bool setRetDoesNotAlias ( Function &  F )

static

Definition at line 108 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setRetExtAttr()

static void setRetExtAttr ( Function &  F, const TargetLibraryInfo &  TLI, bool  Signed = true  )

static

Definition at line 1247 of file BuildLibCalls.cpp.

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

Referenced by llvm::getOrInsertLibFunc().

setRetNoUndef()

static bool setRetNoUndef ( Function &  F )

static

Definition at line 148 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs(), and setRetAndArgsNoUndef().

setReturnedArg()

static bool setReturnedArg ( Function &  F, unsigned  ArgNo  )

static

Definition at line 185 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

setWillReturn()

static bool setWillReturn ( Function &  F )

static

Definition at line 207 of file BuildLibCalls.cpp.

References F.

Referenced by llvm::inferNonMandatoryLibFuncAttrs().

STATISTIC() [1/14]

STATISTIC	(	NumArgMemOnly	,
		"Number of functions inferred as argmemonly"
	)

STATISTIC() [2/14]

STATISTIC	(	NumInaccessibleMemOnly	,
		"Number of functions inferred as inaccessiblememonly"
	)

STATISTIC() [3/14]

STATISTIC	(	NumInaccessibleMemOrArgMemOnly	,
		"Number of functions inferred as inaccessiblemem_or_argmemonly"
	)

STATISTIC() [4/14]

STATISTIC	(	NumNoAlias	,
		"Number of function returns inferred as noalias"
	)

STATISTIC() [5/14]

STATISTIC	(	NumNoCapture	,
		"Number of arguments inferred as nocapture"
	)

STATISTIC() [6/14]

STATISTIC	(	NumNoUndef	,
		"Number of function returns inferred as noundef returns"
	)

STATISTIC() [7/14]

STATISTIC	(	NumNoUnwind	,
		"Number of functions inferred as nounwind"
	)

STATISTIC() [8/14]

STATISTIC	(	NumReadNone	,
		"Number of functions inferred as readnone"
	)

STATISTIC() [9/14]

STATISTIC	(	NumReadOnly	,
		"Number of functions inferred as readonly"
	)

STATISTIC() [10/14]

STATISTIC	(	NumReadOnlyArg	,
		"Number of arguments inferred as readonly"
	)

STATISTIC() [11/14]

STATISTIC	(	NumReturnedArg	,
		"Number of arguments inferred as returned"
	)

STATISTIC() [12/14]

STATISTIC	(	NumWillReturn	,
		"Number of functions inferred as willreturn"
	)

STATISTIC() [13/14]

STATISTIC	(	NumWriteOnly	,
		"Number of functions inferred as writeonly"
	)

STATISTIC() [14/14]

STATISTIC	(	NumWriteOnlyArg	,
		"Number of arguments inferred as writeonly"
	)