llvm::ObjectSizeOffsetEvaluator Class Reference

Evaluate the size and offset of an object pointed to by a Value*. More...

#include "llvm/Analysis/MemoryBuiltins.h"

Inheritance diagram for llvm::ObjectSizeOffsetEvaluator:

Public Member Functions
LLVM_ABI	ObjectSizeOffsetEvaluator (const DataLayout &DL, const TargetLibraryInfo *TLI, LLVMContext &Context, ObjectSizeOpts EvalOpts={})
LLVM_ABI SizeOffsetValue	compute (Value *V)
LLVM_ABI SizeOffsetValue	visitAllocaInst (AllocaInst &I)
LLVM_ABI SizeOffsetValue	visitCallBase (CallBase &CB)
LLVM_ABI SizeOffsetValue	visitExtractElementInst (ExtractElementInst &I)
LLVM_ABI SizeOffsetValue	visitExtractValueInst (ExtractValueInst &I)
LLVM_ABI SizeOffsetValue	visitGEPOperator (GEPOperator &GEP)
LLVM_ABI SizeOffsetValue	visitIntToPtrInst (IntToPtrInst &)
LLVM_ABI SizeOffsetValue	visitLoadInst (LoadInst &I)
LLVM_ABI SizeOffsetValue	visitPHINode (PHINode &PHI)
LLVM_ABI SizeOffsetValue	visitSelectInst (SelectInst &I)
LLVM_ABI SizeOffsetValue	visitInstruction (Instruction &I)
Public Member Functions inherited from llvm::InstVisitor< ObjectSizeOffsetEvaluator, SizeOffsetValue >
void	visit (Iterator Start, Iterator End)
void	visitModule (Module &M)
void	visitFunction (Function &F)
void	visitBasicBlock (BasicBlock &BB)
SizeOffsetValue	visitICmpInst (ICmpInst &I)
SizeOffsetValue	visitFCmpInst (FCmpInst &I)
SizeOffsetValue	visitAllocaInst (AllocaInst &I)
SizeOffsetValue	visitLoadInst (LoadInst &I)
SizeOffsetValue	visitStoreInst (StoreInst &I)
SizeOffsetValue	visitAtomicCmpXchgInst (AtomicCmpXchgInst &I)
SizeOffsetValue	visitAtomicRMWInst (AtomicRMWInst &I)
SizeOffsetValue	visitFenceInst (FenceInst &I)
SizeOffsetValue	visitGetElementPtrInst (GetElementPtrInst &I)
SizeOffsetValue	visitPHINode (PHINode &I)
SizeOffsetValue	visitTruncInst (TruncInst &I)
SizeOffsetValue	visitZExtInst (ZExtInst &I)
SizeOffsetValue	visitSExtInst (SExtInst &I)
SizeOffsetValue	visitFPTruncInst (FPTruncInst &I)
SizeOffsetValue	visitFPExtInst (FPExtInst &I)
SizeOffsetValue	visitFPToUIInst (FPToUIInst &I)
SizeOffsetValue	visitFPToSIInst (FPToSIInst &I)
SizeOffsetValue	visitUIToFPInst (UIToFPInst &I)
SizeOffsetValue	visitSIToFPInst (SIToFPInst &I)
SizeOffsetValue	visitPtrToIntInst (PtrToIntInst &I)
SizeOffsetValue	visitPtrToAddrInst (PtrToAddrInst &I)
SizeOffsetValue	visitIntToPtrInst (IntToPtrInst &I)
SizeOffsetValue	visitBitCastInst (BitCastInst &I)
SizeOffsetValue	visitAddrSpaceCastInst (AddrSpaceCastInst &I)
SizeOffsetValue	visitSelectInst (SelectInst &I)
SizeOffsetValue	visitVAArgInst (VAArgInst &I)
SizeOffsetValue	visitExtractElementInst (ExtractElementInst &I)
SizeOffsetValue	visitInsertElementInst (InsertElementInst &I)
SizeOffsetValue	visitShuffleVectorInst (ShuffleVectorInst &I)
SizeOffsetValue	visitExtractValueInst (ExtractValueInst &I)
SizeOffsetValue	visitInsertValueInst (InsertValueInst &I)
SizeOffsetValue	visitLandingPadInst (LandingPadInst &I)
SizeOffsetValue	visitFuncletPadInst (FuncletPadInst &I)
SizeOffsetValue	visitCleanupPadInst (CleanupPadInst &I)
SizeOffsetValue	visitCatchPadInst (CatchPadInst &I)
SizeOffsetValue	visitFreezeInst (FreezeInst &I)
SizeOffsetValue	visitMemSetInst (MemSetInst &I)
SizeOffsetValue	visitMemSetPatternInst (MemSetPatternInst &I)
SizeOffsetValue	visitMemCpyInst (MemCpyInst &I)
SizeOffsetValue	visitMemMoveInst (MemMoveInst &I)
SizeOffsetValue	visitMemTransferInst (MemTransferInst &I)
SizeOffsetValue	visitMemIntrinsic (MemIntrinsic &I)
SizeOffsetValue	visitVAStartInst (VAStartInst &I)
SizeOffsetValue	visitVAEndInst (VAEndInst &I)
SizeOffsetValue	visitVACopyInst (VACopyInst &I)
SizeOffsetValue	visitIntrinsicInst (IntrinsicInst &I)
SizeOffsetValue	visitCallInst (CallInst &I)
SizeOffsetValue	visitInvokeInst (InvokeInst &I)
SizeOffsetValue	visitCallBrInst (CallBrInst &I)
SizeOffsetValue	visitReturnInst (ReturnInst &I)
SizeOffsetValue	visitBranchInst (BranchInst &I)
SizeOffsetValue	visitSwitchInst (SwitchInst &I)
SizeOffsetValue	visitIndirectBrInst (IndirectBrInst &I)
SizeOffsetValue	visitResumeInst (ResumeInst &I)
SizeOffsetValue	visitUnreachableInst (UnreachableInst &I)
SizeOffsetValue	visitCleanupReturnInst (CleanupReturnInst &I)
SizeOffsetValue	visitCatchReturnInst (CatchReturnInst &I)
SizeOffsetValue	visitCatchSwitchInst (CatchSwitchInst &I)
SizeOffsetValue	visitTerminator (Instruction &I)
SizeOffsetValue	visitCastInst (CastInst &I)
SizeOffsetValue	visitUnaryOperator (UnaryOperator &I)
SizeOffsetValue	visitBinaryOperator (BinaryOperator &I)
SizeOffsetValue	visitCmpInst (CmpInst &I)
SizeOffsetValue	visitUnaryInstruction (UnaryInstruction &I)
SizeOffsetValue	visitCallBase (CallBase &I)
void	visitInstruction (Instruction &I)

Static Public Member Functions
static SizeOffsetValue	unknown ()

Detailed Description

Evaluate the size and offset of an object pointed to by a Value*.

May create code to compute the result at run-time.

Definition at line 345 of file MemoryBuiltins.h.

Constructor & Destructor Documentation

ObjectSizeOffsetEvaluator()

ObjectSizeOffsetEvaluator::ObjectSizeOffsetEvaluator	(	const DataLayout &	DL,
		const TargetLibraryInfo *	TLI,
		LLVMContext &	Context,
		ObjectSizeOpts	EvalOpts = {} )

Definition at line 1233 of file MemoryBuiltins.cpp.

References I.

Member Function Documentation

compute()

SizeOffsetValue ObjectSizeOffsetEvaluator::compute

(

Value *

V

)

Definition at line 1245 of file MemoryBuiltins.cpp.

References llvm::cast(), llvm::PoisonValue::get(), and I.

Referenced by getBoundsCheckCond(), and llvm::lowerObjectSizeCall().

unknown()

SizeOffsetValue llvm::ObjectSizeOffsetEvaluator::unknown ( )

inlinestatic

Definition at line 371 of file MemoryBuiltins.h.

Referenced by llvm::lowerObjectSizeCall(), visitAllocaInst(), visitCallBase(), visitExtractElementInst(), visitExtractValueInst(), visitGEPOperator(), visitInstruction(), visitIntToPtrInst(), visitLoadInst(), visitPHINode(), and visitSelectInst().

visitAllocaInst()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitAllocaInst

(

AllocaInst &

I

)

Definition at line 1332 of file MemoryBuiltins.cpp.

References assert(), llvm::Value::getType(), I, Size, and unknown().

visitCallBase()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitCallBase

(

CallBase &

CB

)

Definition at line 1353 of file MemoryBuiltins.cpp.

References getAllocationSize(), llvm::CallBase::getArgOperand(), Size, StrDupLike, and unknown().

visitExtractElementInst()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitExtractElementInst

(

ExtractElementInst &

I

)

Definition at line 1376 of file MemoryBuiltins.cpp.

References unknown().

visitExtractValueInst()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitExtractValueInst

(

ExtractValueInst &

I

)

Definition at line 1381 of file MemoryBuiltins.cpp.

References unknown().

visitGEPOperator()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitGEPOperator

(

GEPOperator &

GEP

)

Definition at line 1385 of file MemoryBuiltins.cpp.

References llvm::SizeOffsetType< T, C >::bothKnown(), llvm::emitGEPOffset(), GEP, llvm::Offset, llvm::SizeOffsetType< T, C >::Offset, llvm::SizeOffsetType< T, C >::Size, and unknown().

visitInstruction()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitInstruction

(

Instruction &

I

)

Definition at line 1463 of file MemoryBuiltins.cpp.

References llvm::dbgs(), I, LLVM_DEBUG, and unknown().

visitIntToPtrInst()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitIntToPtrInst

(

IntToPtrInst &

)

Definition at line 1395 of file MemoryBuiltins.cpp.

References unknown().

visitLoadInst()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitLoadInst

(

LoadInst &

I

)

Definition at line 1400 of file MemoryBuiltins.cpp.

References unknown().

visitPHINode()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitPHINode

(

PHINode &

PHI

)

Definition at line 1404 of file MemoryBuiltins.cpp.

References llvm::PHINode::addIncoming(), llvm::SizeOffsetType< T, C >::bothKnown(), llvm::Instruction::eraseFromParent(), llvm::PoisonValue::get(), llvm::BasicBlock::getFirstInsertionPt(), llvm::PHINode::hasConstantValue(), llvm::Offset, llvm::SizeOffsetType< T, C >::Offset, PHI, llvm::Value::replaceAllUsesWith(), Size, llvm::SizeOffsetType< T, C >::Size, and unknown().

visitSelectInst()

SizeOffsetValue ObjectSizeOffsetEvaluator::visitSelectInst

(

SelectInst &

I

)

Definition at line 1447 of file MemoryBuiltins.cpp.

References llvm::SizeOffsetType< T, C >::bothKnown(), I, llvm::Offset, llvm::SizeOffsetType< T, C >::Offset, Size, llvm::SizeOffsetType< T, C >::Size, and unknown().

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

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