BasicAliasAnalysis.cpp File Reference (original) (raw)

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Functions
	STATISTIC (SearchLimitReached, "Number of times the limit to " "decompose GEPs is reached")
	SearchLimitReached / SearchTimes shows how often the limit of to decompose GEPs is reached.

	STATISTIC (SearchTimes, "Number of times a GEP is decomposed")

static std::optional< TypeSize >	getObjectSize (const Value *V, const DataLayout &DL, const TargetLibraryInfo &TLI, bool NullIsValidLoc, bool RoundToAlign=false)
	Returns the size of the object specified by V or UnknownSize if unknown.

static bool	isObjectSmallerThan (const Value *V, TypeSize Size, const DataLayout &DL, const TargetLibraryInfo &TLI, bool NullIsValidLoc)
	Returns true if we can prove that the object specified by V is smaller than Size.

static TypeSize	getMinimalExtentFrom (const Value &V, const LocationSize &LocSize, const DataLayout &DL, bool NullIsValidLoc)
	Return the minimal extent from V to the end of the underlying object, assuming the result is used in an aliasing query.

static bool	isObjectSize (const Value *V, TypeSize Size, const DataLayout &DL, const TargetLibraryInfo &TLI, bool NullIsValidLoc)
	Returns true if we can prove that the object specified by V has size Size.

static bool	areBothVScale (const Value V1, const Value V2)
	Return true if both V1 and V2 are VScale.

static bool	isNotInCycle (const Instruction I, const DominatorTree DT, const LoopInfo *LI)

static LinearExpression	GetLinearExpression (const CastedValue &Val, const DataLayout &DL, unsigned Depth, AssumptionCache AC, DominatorTree DT)
	Analyzes the specified value as a linear expression: "A*V + B", where A and B are constant integers.

static bool	isIntrinsicCall (const CallBase *Call, Intrinsic::ID IID)

static const Function *	getParent (const Value *V)

static bool	notDifferentParent (const Value O1, const Value O2)

static AliasResult	MergeAliasResults (AliasResult A, AliasResult B)

	INITIALIZE_PASS_BEGIN (BasicAAWrapperPass, "basic-aa", "Basic Alias Analysis (stateless AA impl)", true, true) INITIALIZE_PASS_END(BasicAAWrapperPass

basic Basic Alias	Analysis (stateless AA impl)"

Variables
static cl::opt< bool >	EnableRecPhiAnalysis ("basic-aa-recphi", cl::Hidden, cl::init(true))
	Enable analysis of recursive PHI nodes.

static cl::opt< bool >	EnableSeparateStorageAnalysis ("basic-aa-separate-storage", cl::Hidden, cl::init(true))

static const unsigned	MaxLookupSearchDepth = 6

basic	aa

basic Basic Alias	true

◆ DEBUG_TYPE

#define DEBUG_TYPE "basicaa"

basic Basic Alias Analysis	(	stateless AA	impl	)

◆ areBothVScale()

◆ GetLinearExpression()

◆ getMinimalExtentFrom()

◆ getObjectSize()

◆ getParent()

Definition at line 863 of file BasicAliasAnalysis.cpp.

References llvm::GlobalValue::getParent().

Referenced by llvm::CanonicalLoopInfo::assertOK(), llvm::slpvectorizer::BoUpSLP::canVectorizeLoads(), llvm::CloneAndPruneIntoFromInst(), llvm::JumpThreadingPass::computeValueKnownInPredecessorsImpl(), detectPopcountIdiom(), ensureValueAvailableInSuccessor(), llvm::VPBasicBlock::execute(), llvm::CodeExtractor::findAllocas(), llvm::InstCombinerImpl::foldOpIntoPhi(), foldURemOfLoopIncrement(), llvm::RegionBase< Tr >::getDepth(), llvm::VPBasicBlock::getEnclosingLoopRegion(), llvm::getLiveRegMap(), getLocalFunctionMetadata(), llvm::LoopBase< BasicBlock, Loop >::getLoopLatch(), llvm::slpvectorizer::BoUpSLP::getReorderingData(), isBlockValidForExtraction(), llvm::PHINode::isComplete(), llvm::VPBasicBlock::isExiting(), isFSqrtDivToFMulLegal(), llvm::CodeExtractor::isLegalToShrinkwrapLifetimeMarkers(), isOnlyUsedInEntryBlock(), isUsedOutsideOfDefiningBlock(), LLVMGetBasicBlockParent(), LLVMGetGlobalParent(), LLVMGetInstructionParent(), LLVMGetParamParent(), notDifferentParent(), preparePlanForEpilogueVectorLoop(), llvm::MachineFunction::print(), redirectValuesFromPredecessorsToPhi(), llvm::AssumptionCache::registerAssumption(), llvm::ScheduleDAGMI::schedule(), llvm::ScheduleDAGMILive::schedule(), llvm::VLIWMachineScheduler::schedule(), llvm::SIScheduleDAGMI::schedule(), splitCallSite(), and llvm::GenericCycle< ContextT >::verifyCycle().

◆ INITIALIZE_PASS_BEGIN()

◆ isIntrinsicCall()

◆ isNotInCycle()

◆ isObjectSize()

◆ isObjectSmallerThan()

◆ MergeAliasResults()

◆ notDifferentParent()

◆ STATISTIC() [1/2]

STATISTIC	(	SearchLimitReached	,
"Number of times the limit to " "decompose GEPs is reached"
)

SearchLimitReached / SearchTimes shows how often the limit of to decompose GEPs is reached.

It will affect the precision of basic alias analysis.

◆ STATISTIC() [2/2]

STATISTIC	(	SearchTimes	,
"Number of times a GEP is decomposed"
)

◆ aa

◆ EnableRecPhiAnalysis

cl::opt< bool > EnableRecPhiAnalysis("basic-aa-recphi", cl::Hidden, cl::init(true)) ( "basic-aa-recphi" , cl::Hidden , cl::init(true) )	static

Enable analysis of recursive PHI nodes.

◆ EnableSeparateStorageAnalysis

cl::opt< bool > EnableSeparateStorageAnalysis("basic-aa-separate-storage", cl::Hidden, cl::init(true)) ( "basic-aa-separate-storage" , cl::Hidden , cl::init(true) )	static