ValueTracking.cpp File Reference

#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Constants.h"
#include "llvm/Instructions.h"
#include "llvm/GlobalVariable.h"
#include "llvm/IntrinsicInst.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Support/GetElementPtrTypeIterator.h"
#include "llvm/Support/MathExtras.h"
#include <cstring>

Include dependency graph for ValueTracking.cpp:

Go to the source code of this file.

Functions
static unsigned	getOpcode (const Value *V)
void	llvm::ComputeMaskedBits (Value *V, const APInt &Mask, APInt &KnownZero, APInt &KnownOne, TargetData *TD=0, unsigned Depth=0)
bool	llvm::MaskedValueIsZero (Value *V, const APInt &Mask, TargetData *TD=0, unsigned Depth=0)
unsigned	llvm::ComputeNumSignBits (Value *Op, TargetData *TD=0, unsigned Depth=0)
bool	llvm::CannotBeNegativeZero (const Value *V, unsigned Depth=0)
Value *	BuildSubAggregate (Value *From, Value *To, const Type *IndexedType, SmallVector< unsigned, 10 > &Idxs, unsigned IdxSkip, Instruction *InsertBefore)
Value *	BuildSubAggregate (Value *From, const unsigned *idx_begin, const unsigned *idx_end, Instruction *InsertBefore)
Value *	llvm::FindInsertedValue (Value *V, const unsigned *idx_begin, const unsigned *idx_end, Instruction *InsertBefore=0)
bool	llvm::GetConstantStringInfo (Value *V, std::string &Str, uint64_t Offset=0, bool StopAtNul=true)

---

Function Documentation

Value* BuildSubAggregate	(	Value *	From,
		const unsigned *	idx_begin,
		const unsigned *	idx_end,
		Instruction *	InsertBefore
	)

Definition at line 825 of file ValueTracking.cpp.

References BuildSubAggregate(), llvm::UndefValue::get(), llvm::Value::getType(), llvm::SmallVectorImpl< T >::size(), and To.

Value* BuildSubAggregate	(	Value *	From,
		Value *	To,
		const Type *	IndexedType,
		SmallVector< unsigned, 10 > &	Idxs,
		unsigned	IdxSkip,
		Instruction *	InsertBefore
	)

Definition at line 766 of file ValueTracking.cpp.

References llvm::SmallVectorImpl< T >::begin(), llvm::InsertValueInst::Create(), llvm::dyn_cast(), llvm::SmallVectorImpl< T >::end(), llvm::Instruction::eraseFromParent(), llvm::FindInsertedValue(), llvm::InsertValueInst::getAggregateOperand(), llvm::StructType::getElementType(), llvm::StructType::getNumElements(), llvm::SmallVectorImpl< T >::pop_back(), llvm::SmallVectorImpl< T >::push_back(), and V.

Referenced by BuildSubAggregate(), and llvm::FindInsertedValue().

static unsigned getOpcode

(

const Value *

V

)

[static]

getOpcode - If this is an Instruction or a ConstantExpr, return the opcode value. Otherwise return UserOp1.

Definition at line 28 of file ValueTracking.cpp.

References I, and UserOp1.

Referenced by llvm::ComputeMaskedBits(), llvm::ComputeNumSignBits(), EnforceKnownAlignment(), llvm::SelectInst::getOpcode(), isGEP(), IsPossiblyOverwrittenArgumentOfTailCall(), isReassociableOp(), IsUserOfGlobalSafeForSRA(), LowerVECTOR_SHUFFLE_4wide(), SpeculativelyExecuteBB(), and SRAGlobal().