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LLVM
3.7.0
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Evaluate the size and offset of an object pointed to by a Value* statically. More...
#include <MemoryBuiltins.h>
Evaluate the size and offset of an object pointed to by a Value* statically.
Fails if size or offset are not known at compile time.
Definition at line 150 of file MemoryBuiltins.h.
| ObjectSizeOffsetVisitor::ObjectSizeOffsetVisitor | ( | const DataLayout & | DL, |
| const TargetLibraryInfo * | TLI, | ||
| LLVMContext & | Context, | ||
| bool | RoundToAlign = false |
||
| ) |
Definition at line 382 of file MemoryBuiltins.cpp.
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inline |
Definition at line 180 of file MemoryBuiltins.h.
References knownOffset(), and knownSize().
Referenced by visitGEPOperator(), and visitSelectInst().
| SizeOffsetType ObjectSizeOffsetVisitor::compute | ( | Value * | V | ) |
Definition at line 391 of file MemoryBuiltins.cpp.
References llvm::ARM_PROC::A, llvm::dbgs(), DEBUG, GEP, llvm::APInt::getNullValue(), llvm::DataLayout::getPointerTypeSizeInBits(), llvm::Value::getType(), I, P, llvm::Value::stripPointerCasts(), llvm::InstVisitor< ObjectSizeOffsetVisitor, SizeOffsetType >::visit(), visitArgument(), visitConstantPointerNull(), visitGEPOperator(), visitGlobalAlias(), visitGlobalVariable(), and visitUndefValue().
Referenced by visitGEPOperator(), visitGlobalAlias(), and visitSelectInst().
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inline |
Definition at line 176 of file MemoryBuiltins.h.
Referenced by bothKnown().
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inline |
Definition at line 172 of file MemoryBuiltins.h.
Referenced by bothKnown().
| SizeOffsetType ObjectSizeOffsetVisitor::visitAllocaInst | ( | AllocaInst & | I | ) |
Definition at line 428 of file MemoryBuiltins.cpp.
References llvm::C, llvm::AllocaInst::getAlignment(), llvm::AllocaInst::getAllocatedType(), llvm::AllocaInst::getArraySize(), llvm::DataLayout::getTypeAllocSize(), llvm::AllocaInst::isArrayAllocation(), and llvm::Type::isSized().
| SizeOffsetType ObjectSizeOffsetVisitor::visitArgument | ( | Argument & | A | ) |
Definition at line 444 of file MemoryBuiltins.cpp.
References llvm::SequentialType::getElementType(), llvm::Argument::getParamAlignment(), llvm::Value::getType(), llvm::DataLayout::getTypeAllocSize(), and llvm::Argument::hasByValOrInAllocaAttr().
Referenced by compute().
| SizeOffsetType ObjectSizeOffsetVisitor::visitCallSite | ( | CallSite | CS | ) |
Definition at line 455 of file MemoryBuiltins.cpp.
References AllocFnsTy::AllocTy, AnyAlloc, llvm::dyn_cast(), AllocFnsTy::FstParam, getAllocationData(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::getArgument(), llvm::CallSiteBase< FunTy, BBTy, ValTy, UserTy, InstrTy, CallTy, InvokeTy, IterTy >::getInstruction(), llvm::GetStringLength(), llvm::ConstantInt::getValue(), AllocFnsTy::SndParam, StrDupLike, llvm::APInt::ugt(), and llvm::APInt::zextOrSelf().
| SizeOffsetType ObjectSizeOffsetVisitor::visitConstantPointerNull | ( | ConstantPointerNull & | ) |
Definition at line 506 of file MemoryBuiltins.cpp.
Referenced by compute().
| SizeOffsetType ObjectSizeOffsetVisitor::visitExtractElementInst | ( | ExtractElementInst & | I | ) |
Definition at line 511 of file MemoryBuiltins.cpp.
| SizeOffsetType ObjectSizeOffsetVisitor::visitExtractValueInst | ( | ExtractValueInst & | I | ) |
Definition at line 516 of file MemoryBuiltins.cpp.
| SizeOffsetType ObjectSizeOffsetVisitor::visitGEPOperator | ( | GEPOperator & | GEP | ) |
Definition at line 521 of file MemoryBuiltins.cpp.
References llvm::GEPOperator::accumulateConstantOffset(), bothKnown(), compute(), and llvm::GEPOperator::getPointerOperand().
Referenced by compute().
| SizeOffsetType ObjectSizeOffsetVisitor::visitGlobalAlias | ( | GlobalAlias & | GA | ) |
Definition at line 530 of file MemoryBuiltins.cpp.
References compute(), llvm::GlobalAlias::getAliasee(), and llvm::GlobalValue::mayBeOverridden().
Referenced by compute().
| SizeOffsetType ObjectSizeOffsetVisitor::visitGlobalVariable | ( | GlobalVariable & | GV | ) |
Definition at line 536 of file MemoryBuiltins.cpp.
References llvm::GlobalObject::getAlignment(), llvm::SequentialType::getElementType(), llvm::GlobalValue::getType(), llvm::DataLayout::getTypeAllocSize(), and llvm::GlobalVariable::hasDefinitiveInitializer().
Referenced by compute().
| SizeOffsetType ObjectSizeOffsetVisitor::visitInstruction | ( | Instruction & | I | ) |
Definition at line 571 of file MemoryBuiltins.cpp.
References llvm::dbgs(), and DEBUG.
| SizeOffsetType ObjectSizeOffsetVisitor::visitIntToPtrInst | ( | IntToPtrInst & | ) |
Definition at line 544 of file MemoryBuiltins.cpp.
| SizeOffsetType ObjectSizeOffsetVisitor::visitLoadInst | ( | LoadInst & | I | ) |
Definition at line 549 of file MemoryBuiltins.cpp.
| SizeOffsetType ObjectSizeOffsetVisitor::visitPHINode | ( | PHINode & | ) |
Definition at line 554 of file MemoryBuiltins.cpp.
| SizeOffsetType ObjectSizeOffsetVisitor::visitSelectInst | ( | SelectInst & | I | ) |
Definition at line 559 of file MemoryBuiltins.cpp.
References bothKnown(), compute(), llvm::SelectInst::getFalseValue(), and llvm::SelectInst::getTrueValue().
| SizeOffsetType ObjectSizeOffsetVisitor::visitUndefValue | ( | UndefValue & | ) |
Definition at line 567 of file MemoryBuiltins.cpp.
Referenced by compute().
1.8.6