SimplifyLibCalls.cpp File Reference

#include "llvm/Transforms/Scalar.h"
#include "llvm/Intrinsics.h"
#include "llvm/Module.h"
#include "llvm/Pass.h"
#include "llvm/Support/IRBuilder.h"
#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Target/TargetData.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h"
#include "llvm/Config/config.h"

Include dependency graph for SimplifyLibCalls.cpp:

Go to the source code of this file.

Defines
#define	DEBUG_TYPE   "simplify-libcalls"
Functions
	STATISTIC (NumSimplified,"Number of library calls simplified")
	STATISTIC (NumAnnotated,"Number of attributes added to library functions")
static uint64_t	GetStringLengthH (Value *V, SmallPtrSet< PHINode *, 32 > &PHIs)
static uint64_t	GetStringLength (Value *V)
static bool	IsOnlyUsedInZeroEqualityComparison (Value *V)
FunctionPass *	llvm::createSimplifyLibCallsPass ()
Variables
static RegisterPass < SimplifyLibCalls >	X ("simplify-libcalls","Simplify well-known library calls")

---

Define Documentation

#define DEBUG_TYPE   "simplify-libcalls"

Definition at line 20 of file SimplifyLibCalls.cpp.

---

Function Documentation

static uint64_t GetStringLength

(

Value *

V

)

[static]

GetStringLength - If we can compute the length of the string pointed to by the specified pointer, return 'len+1'. If we can't, return 0.

Definition at line 415 of file SimplifyLibCalls.cpp.

References GetStringLengthH(), and llvm::Value::getType().

static uint64_t GetStringLengthH	(	Value *	V,
		SmallPtrSet< PHINode *, 32 > &	PHIs
	)			[static]

GetStringLengthH - If we can compute the length of the string pointed to by the specified pointer, return 'len+1'. If we can't, return 0.

Definition at line 304 of file SimplifyLibCalls.cpp.

References llvm::dyn_cast(), llvm::SequentialType::getElementType(), llvm::GlobalVariable::getInitializer(), llvm::ArrayType::getNumElements(), llvm::User::getNumOperands(), llvm::Constant::getOperand(), llvm::User::getOperand(), llvm::ConstantArray::getType(), GV, llvm::GlobalVariable::hasInitializer(), Idx, llvm::SmallPtrSet< PtrType, SmallSize >::insert(), llvm::GlobalVariable::isConstant(), and llvm::ConstantInt::isZero().

Referenced by GetStringLength().

static bool IsOnlyUsedInZeroEqualityComparison

(

Value *

V

)

[static]

IsOnlyUsedInZeroEqualityComparison - Return true if it only matters that the value is equal or not-equal to zero.

Definition at line 427 of file SimplifyLibCalls.cpp.

References llvm::CallingConv::C, E, IC, llvm::Value::use_begin(), and llvm::Value::use_end().

STATISTIC	(	NumAnnotated	,
		"Number of attributes added to library functions"
	)

STATISTIC	(	NumSimplified	,
		"Number of library calls simplified"
	)

---

Variable Documentation

AbsOpt Abs

Definition at line 1337 of file SimplifyLibCalls.cpp.

Function* Caller

Definition at line 48 of file SimplifyLibCalls.cpp.

Referenced by llvm::InlineCostAnalyzer::getInlineCost(), HandleInlinedInvoke(), InlineCallIfPossible(), llvm::InlineFunction(), llvm::Inliner::runOnSCC(), and UpdateCallGraphAfterInlining().

ExitOpt Exit

Definition at line 1329 of file SimplifyLibCalls.cpp.

Exp2Opt Exp2

Definition at line 1335 of file SimplifyLibCalls.cpp.

FFSOpt FFS

Definition at line 1337 of file SimplifyLibCalls.cpp.

FPrintFOpt FPrintF

Definition at line 1341 of file SimplifyLibCalls.cpp.

FPutsOpt FPuts

Definition at line 1341 of file SimplifyLibCalls.cpp.

FWriteOpt FWrite

Definition at line 1341 of file SimplifyLibCalls.cpp.

char ID [static]

Definition at line 1345 of file SimplifyLibCalls.cpp.

IsAsciiOpt IsAscii

Definition at line 1337 of file SimplifyLibCalls.cpp.

IsDigitOpt IsDigit

Definition at line 1337 of file SimplifyLibCalls.cpp.

MemCmpOpt MemCmp

Definition at line 1332 of file SimplifyLibCalls.cpp.

MemCpyOpt MemCpy

Definition at line 1332 of file SimplifyLibCalls.cpp.

MemMoveOpt MemMove

Definition at line 1333 of file SimplifyLibCalls.cpp.

MemSetOpt MemSet

Definition at line 1333 of file SimplifyLibCalls.cpp.

bool Modified

Definition at line 1343 of file SimplifyLibCalls.cpp.

StringMap<LibCallOptimization*> Optimizations

Definition at line 1327 of file SimplifyLibCalls.cpp.

PowOpt Pow

Definition at line 1335 of file SimplifyLibCalls.cpp.

PrintFOpt PrintF

Definition at line 1340 of file SimplifyLibCalls.cpp.

SPrintFOpt SPrintF

Definition at line 1340 of file SimplifyLibCalls.cpp.

StrCatOpt StrCat

Definition at line 1331 of file SimplifyLibCalls.cpp.

StrChrOpt StrChr

Definition at line 1331 of file SimplifyLibCalls.cpp.

StrCmpOpt StrCmp

Definition at line 1331 of file SimplifyLibCalls.cpp.

StrCpyOpt StrCpy

Definition at line 1332 of file SimplifyLibCalls.cpp.

StrLenOpt StrLen

Definition at line 1332 of file SimplifyLibCalls.cpp.

StrNCmpOpt StrNCmp

Definition at line 1331 of file SimplifyLibCalls.cpp.

const TargetData* TD

Definition at line 49 of file SimplifyLibCalls.cpp.

ToAsciiOpt ToAscii

Definition at line 1338 of file SimplifyLibCalls.cpp.

UnaryDoubleFPOpt UnaryDoubleFP

Definition at line 1335 of file SimplifyLibCalls.cpp.

RegisterPass<SimplifyLibCalls> X("simplify-libcalls","Simplify well-known library calls") [static]