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LLVM
4.0.0
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Evaluate the size and offset of an object pointed to by a Value*. More...
#include <MemoryBuiltins.h>
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 218 of file MemoryBuiltins.h.
| ObjectSizeOffsetEvaluator::ObjectSizeOffsetEvaluator | ( | const DataLayout & | DL, |
| const TargetLibraryInfo * | TLI, | ||
| LLVMContext & | Context, | ||
| bool | RoundToAlign = false |
||
| ) |
Definition at line 689 of file MemoryBuiltins.cpp.
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inline |
Definition at line 254 of file MemoryBuiltins.h.
References knownOffset(), and knownSize().
Referenced by compute().
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inline |
Definition at line 258 of file MemoryBuiltins.h.
References knownOffset(), and knownSize().
Referenced by compute(), visitGEPOperator(), visitPHINode(), and visitSelectInst().
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::compute | ( | Value * | V | ) |
Definition at line 698 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::DataLayout::getIntPtrType(), and llvm::Value::getType().
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inline |
Definition at line 250 of file MemoryBuiltins.h.
Referenced by anyKnown(), and bothKnown().
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inline |
Definition at line 246 of file MemoryBuiltins.h.
Referenced by anyKnown(), and bothKnown().
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitAllocaInst | ( | AllocaInst & | I | ) |
Definition at line 771 of file MemoryBuiltins.cpp.
References assert(), llvm::IRBuilder< T, Inserter >::CreateMul(), llvm::ConstantInt::get(), llvm::AllocaInst::getAllocatedType(), llvm::AllocaInst::getArraySize(), llvm::DataLayout::getTypeAllocSize(), llvm::AllocaInst::isArrayAllocation(), and llvm::Type::isSized().
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitCallSite | ( | CallSite | CS | ) |
Definition at line 784 of file MemoryBuiltins.cpp.
References AllocFnsTy::AllocTy, llvm::IRBuilder< T, Inserter >::CreateMul(), llvm::IRBuilder< T, Inserter >::CreateZExt(), AllocFnsTy::FstParam, getAllocationSize(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getArgument(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, UseTy, InstrTy, CallTy, InvokeTy, IterTy >::getInstruction(), AllocFnsTy::SndParam, and StrDupLike.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitExtractElementInst | ( | ExtractElementInst & | I | ) |
Definition at line 815 of file MemoryBuiltins.cpp.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitExtractValueInst | ( | ExtractValueInst & | I | ) |
Definition at line 820 of file MemoryBuiltins.cpp.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitGEPOperator | ( | GEPOperator & | GEP | ) |
Definition at line 825 of file MemoryBuiltins.cpp.
References bothKnown(), llvm::IRBuilder< T, Inserter >::CreateAdd(), llvm::EmitGEPOffset(), llvm::GEPOperator::getPointerOperand(), and Offset.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitInstruction | ( | Instruction & | I | ) |
Definition at line 898 of file MemoryBuiltins.cpp.
References llvm::dbgs(), and DEBUG.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitIntToPtrInst | ( | IntToPtrInst & | ) |
Definition at line 835 of file MemoryBuiltins.cpp.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitLoadInst | ( | LoadInst & | I | ) |
Definition at line 840 of file MemoryBuiltins.cpp.
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitPHINode | ( | PHINode & | PHI | ) |
Definition at line 844 of file MemoryBuiltins.cpp.
References llvm::PHINode::addIncoming(), bothKnown(), llvm::IRBuilder< T, Inserter >::CreatePHI(), 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(), and llvm::IRBuilderBase::SetInsertPoint().
| SizeOffsetEvalType ObjectSizeOffsetEvaluator::visitSelectInst | ( | SelectInst & | I | ) |
Definition at line 882 of file MemoryBuiltins.cpp.
References bothKnown(), llvm::IRBuilder< T, Inserter >::CreateSelect(), llvm::SelectInst::getCondition(), llvm::SelectInst::getFalseValue(), llvm::SelectInst::getTrueValue(), and Offset.
1.8.6