Evaluate the size and offset of an object pointed to by a Value*. More...
#include "llvm/Analysis/MemoryBuiltins.h"
Public Member Functions inherited from Static Public Member Functions | |
| static SizeOffsetEvalType | 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 294 of file MemoryBuiltins.h.
Constructor & Destructor Documentation
◆ ObjectSizeOffsetEvaluator()
| ObjectSizeOffsetEvaluator::ObjectSizeOffsetEvaluator | ( | const DataLayout & | DL, |
| const TargetLibraryInfo * | TLI, | ||
| LLVMContext & | Context, | ||
| ObjectSizeOpts | EvalOpts = {} |
||
| ) |
Definition at line 860 of file MemoryBuiltins.cpp.
References I.
Member Function Documentation
◆ anyKnown()
|
inline |
Definition at line 332 of file MemoryBuiltins.h.
References knownOffset(), and knownSize().
Referenced by compute().
◆ bothKnown()
|
inline |
Definition at line 336 of file MemoryBuiltins.h.
References knownOffset(), and knownSize().
Referenced by compute(), getBoundsCheckCond(), visitGEPOperator(), visitPHINode(), and visitSelectInst().
◆ compute()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::compute | ( | Value * | V | ) |
Definition at line 872 of file MemoryBuiltins.cpp.
References anyKnown(), bothKnown(), llvm::SmallPtrSetImplBase::clear(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::end(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::erase(), llvm::DenseMapBase< DerivedT, KeyT, ValueT, KeyInfoT, BucketT >::find(), llvm::ConstantInt::get(), llvm::UndefValue::get(), llvm::DataLayout::getIndexType(), llvm::Value::getType(), and I.
Referenced by getBoundsCheckCond(), and llvm::lowerObjectSizeCall().
◆ knownOffset()
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inline |
Definition at line 328 of file MemoryBuiltins.h.
Referenced by anyKnown(), and bothKnown().
◆ knownSize()
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inline |
Definition at line 324 of file MemoryBuiltins.h.
Referenced by anyKnown(), and bothKnown().
◆ unknown()
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inlinestatic |
Definition at line 315 of file MemoryBuiltins.h.
Referenced by llvm::lowerObjectSizeCall(), visitAllocaInst(), visitCallBase(), visitExtractElementInst(), visitExtractValueInst(), visitGEPOperator(), visitInstruction(), visitIntToPtrInst(), visitLoadInst(), visitPHINode(), and visitSelectInst().
◆ visitAllocaInst()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitAllocaInst | ( | AllocaInst & | I | ) |
Definition at line 953 of file MemoryBuiltins.cpp.
References assert(), llvm::IRBuilderBase::CreateMul(), llvm::IRBuilderBase::CreateZExtOrTrunc(), llvm::ConstantInt::get(), llvm::DataLayout::getIntPtrType(), llvm::Value::getType(), llvm::DataLayout::getTypeAllocSize(), I, llvm::Check::Size, and unknown().
◆ visitCallBase()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitCallBase | ( | CallBase & | CB | ) |
Definition at line 973 of file MemoryBuiltins.cpp.
References AllocFnsTy::AllocTy, llvm::IRBuilderBase::CreateMul(), llvm::IRBuilderBase::CreateZExtOrTrunc(), AllocFnsTy::FstParam, getAllocationSize(), llvm::CallBase::getArgOperand(), llvm::Check::Size, AllocFnsTy::SndParam, StrDupLike, and unknown().
◆ visitExtractElementInst()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitExtractElementInst | ( | ExtractElementInst & | I | ) |
Definition at line 1004 of file MemoryBuiltins.cpp.
References unknown().
◆ visitExtractValueInst()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitExtractValueInst | ( | ExtractValueInst & | I | ) |
Definition at line 1009 of file MemoryBuiltins.cpp.
References unknown().
◆ visitGEPOperator()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitGEPOperator | ( | GEPOperator & | GEP | ) |
Definition at line 1014 of file MemoryBuiltins.cpp.
References bothKnown(), llvm::IRBuilderBase::CreateAdd(), llvm::EmitGEPOffset(), GEP, Offset, and unknown().
◆ visitInstruction()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitInstruction | ( | Instruction & | I | ) |
Definition at line 1091 of file MemoryBuiltins.cpp.
References llvm::dbgs(), I, LLVM_DEBUG, and unknown().
◆ visitIntToPtrInst()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitIntToPtrInst | ( | IntToPtrInst & | ) |
Definition at line 1024 of file MemoryBuiltins.cpp.
References unknown().
◆ visitLoadInst()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitLoadInst | ( | LoadInst & | I | ) |
Definition at line 1029 of file MemoryBuiltins.cpp.
References unknown().
◆ visitPHINode()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitPHINode | ( | PHINode & | PHI | ) |
Definition at line 1033 of file MemoryBuiltins.cpp.
References llvm::PHINode::addIncoming(), bothKnown(), llvm::IRBuilderBase::CreatePHI(), llvm::numbers::e, llvm::Instruction::eraseFromParent(), llvm::UndefValue::get(), llvm::BasicBlock::getFirstInsertionPt(), llvm::PHINode::getIncomingBlock(), llvm::PHINode::getIncomingValue(), llvm::PHINode::getNumIncomingValues(), llvm::PHINode::hasConstantValue(), i, Offset, llvm::Value::replaceAllUsesWith(), llvm::IRBuilderBase::SetInsertPoint(), llvm::Check::Size, and unknown().
◆ visitSelectInst()
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitSelectInst | ( | SelectInst & | I | ) |
Definition at line 1075 of file MemoryBuiltins.cpp.
References bothKnown(), llvm::IRBuilderBase::CreateSelect(), I, Offset, llvm::Check::Size, and unknown().
The documentation for this class was generated from the following files:
- include/llvm/Analysis/MemoryBuiltins.h
- lib/Analysis/MemoryBuiltins.cpp
