llvm::GlobalsAAResult Class Reference

An alias analysis result set for globals. More...

#include "llvm/Analysis/GlobalsModRef.h"

Inheritance diagram for llvm::GlobalsAAResult:

Classes
class	FunctionInfo
	The mod/ref information collected for a particular function. More...

Public Member Functions
	GlobalsAAResult (GlobalsAAResult &&Arg)
	~GlobalsAAResult ()
bool	invalidate (Module &M, const PreservedAnalyses &PA, ModuleAnalysisManager::Invalidator &)
AliasResult	alias (const MemoryLocation &LocA, const MemoryLocation &LocB, AAQueryInfo &AAQI, const Instruction *CtxI)
	alias - If one of the pointers is to a global that we are tracking, and the other is some random pointer, we know there cannot be an alias, because the address of the global isn't taken.
ModRefInfo	getModRefInfo (const CallBase *Call, const MemoryLocation &Loc, AAQueryInfo &AAQI)
MemoryEffects	getMemoryEffects (const Function *F)
	getMemoryEffects - Return the behavior of the specified function if called from the specified call site.
ModRefInfo	getModRefInfo (const CallBase *Call, const MemoryLocation &Loc, AAQueryInfo &AAQI)
ModRefInfo	getModRefInfo (const CallBase *Call1, const CallBase *Call2, AAQueryInfo &AAQI)
MemoryEffects	getMemoryEffects (const CallBase *Call, AAQueryInfo &AAQI)
MemoryEffects	getMemoryEffects (const Function *F)
Public Member Functions inherited from llvm::AAResultBase
AliasResult	alias (const MemoryLocation &LocA, const MemoryLocation &LocB, AAQueryInfo &AAQI, const Instruction *I)
ModRefInfo	getModRefInfoMask (const MemoryLocation &Loc, AAQueryInfo &AAQI, bool IgnoreLocals)
ModRefInfo	getArgModRefInfo (const CallBase *Call, unsigned ArgIdx)
MemoryEffects	getMemoryEffects (const CallBase *Call, AAQueryInfo &AAQI)
MemoryEffects	getMemoryEffects (const Function *F)
ModRefInfo	getModRefInfo (const CallBase *Call, const MemoryLocation &Loc, AAQueryInfo &AAQI)
ModRefInfo	getModRefInfo (const CallBase *Call1, const CallBase *Call2, AAQueryInfo &AAQI)

Static Public Member Functions
static GlobalsAAResult	analyzeModule (Module &M, std::function< const TargetLibraryInfo &(Function &F)> GetTLI, CallGraph &CG)

Friends
struct	RecomputeGlobalsAAPass

Additional Inherited Members
Protected Member Functions inherited from llvm::AAResultBase
	AAResultBase ()=default
	AAResultBase (const AAResultBase &Arg)
	AAResultBase (AAResultBase &&Arg)

Detailed Description

An alias analysis result set for globals.

This focuses on handling aliasing properties of globals and interprocedural function call mod/ref information.

Definition at line 30 of file GlobalsModRef.h.

Constructor & Destructor Documentation

GlobalsAAResult()

GlobalsAAResult::GlobalsAAResult

(

GlobalsAAResult &&

Arg

)

Definition at line 953 of file GlobalsModRef.cpp.

References assert(), and H.

~GlobalsAAResult()

GlobalsAAResult::~GlobalsAAResult ( )

default

Member Function Documentation

alias()

AliasResult GlobalsAAResult::alias	(	const MemoryLocation &	LocA,
		const MemoryLocation &	LocB,
		AAQueryInfo &	AAQI,
		const Instruction *	CtxI
	)

alias - If one of the pointers is to a global that we are tracking, and the other is some random pointer, we know there cannot be an alias, because the address of the global isn't taken.

Definition at line 813 of file GlobalsModRef.cpp.

References EnableUnsafeGlobalsModRefAliasResults, llvm::getUnderlyingObject(), llvm::AliasResult::MayAlias, llvm::AliasResult::NoAlias, llvm::MemoryLocation::Ptr, and llvm::Value::stripPointerCastsForAliasAnalysis().

analyzeModule()

GlobalsAAResult GlobalsAAResult::analyzeModule ( Module &  M, std::function< const TargetLibraryInfo &(Function &F)>  GetTLI, CallGraph &  CG  )

static

Definition at line 969 of file GlobalsModRef.cpp.

Referenced by llvm::GlobalsAA::run(), and llvm::GlobalsAAWrapperPass::runOnModule().

getMemoryEffects() [1/3]

MemoryEffects llvm::AAResultBase::getMemoryEffects ( const CallBase *  Call, AAQueryInfo &  AAQI  )

inline

Definition at line 826 of file AliasAnalysis.h.

getMemoryEffects() [2/3]

MemoryEffects llvm::AAResultBase::getMemoryEffects ( const Function *  F )

inline

Definition at line 830 of file AliasAnalysis.h.

getMemoryEffects() [3/3]

MemoryEffects GlobalsAAResult::getMemoryEffects

(

const Function *

F

)

getMemoryEffects - Return the behavior of the specified function if called from the specified call site.

The call site may be null in which case the most generic behavior of this function should be returned.

Definition at line 240 of file GlobalsModRef.cpp.

References F, and llvm::MemoryEffectsBase< LocationEnum >::unknown().

getModRefInfo() [1/3]

ModRefInfo llvm::AAResultBase::getModRefInfo ( const CallBase *  Call, const MemoryLocation &  Loc, AAQueryInfo &  AAQI  )

inline

Definition at line 834 of file AliasAnalysis.h.

getModRefInfo() [2/3]

ModRefInfo GlobalsAAResult::getModRefInfo	(	const CallBase *	Call,
		const MemoryLocation &	Loc,
		AAQueryInfo &	AAQI
	)

Definition at line 927 of file GlobalsModRef.cpp.

References F, llvm::getUnderlyingObject(), llvm::GlobalValue::hasLocalLinkage(), llvm::ModRef, and llvm::MemoryLocation::Ptr.

getModRefInfo() [3/3]

ModRefInfo llvm::AAResultBase::getModRefInfo ( const CallBase *  Call1, const CallBase *  Call2, AAQueryInfo &  AAQI  )

inline

Definition at line 839 of file AliasAnalysis.h.

invalidate()

bool GlobalsAAResult::invalidate	(	Module &	M,
		const PreservedAnalyses &	PA,
		ModuleAnalysisManager::Invalidator &
	)

Definition at line 802 of file GlobalsModRef.cpp.

References llvm::PreservedAnalyses::getChecker().

Friends And Related Function Documentation

RecomputeGlobalsAAPass

friend struct RecomputeGlobalsAAPass

friend

Definition at line 79 of file GlobalsModRef.h.

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

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