Data structure to hold cached (LLVM-IR) information. More...

#include "llvm/Transforms/IPO/Attributor.h"

Public Types
using	InstructionVectorTy = SmallVector< Instruction *, 8 >
	A vector type to hold instructions.

using	OpcodeInstMapTy = DenseMap< unsigned, InstructionVectorTy * >
	A map type from opcodes to instructions with this opcode.

Public Member Functions
	InformationCache (const Module &M, AnalysisGetter &AG, BumpPtrAllocator &Allocator, SetVector< Function * > *CGSCC, bool UseExplorer=true)

	~InformationCache ()

OpcodeInstMapTy &	getOpcodeInstMapForFunction (const Function &F)
	Return the map that relates "interesting" opcodes with all instructions with that opcode in `F`.

InstructionVectorTy &	getReadOrWriteInstsForFunction (const Function &F)
	Return the instructions in `F` that may read or write memory.

MustBeExecutedContextExplorer *	getMustBeExecutedContextExplorer ()
	Return MustBeExecutedContextExplorer.

TargetLibraryInfo *	getTargetLibraryInfoForFunction (const Function &F)
	Return TargetLibraryInfo for function `F`.

bool	isInvolvedInMustTailCall (const Argument &Arg)
	Return true if `Arg` is involved in a must-tail call, thus the argument of the caller or callee.

bool	isOnlyUsedByAssume (const Instruction &I) const

void	invalidateAnalyses ()
	Invalidates the cached analyses.

template<typename AP >
AP::Result *	getAnalysisResultForFunction (const Function &F, bool CachedOnly=false)
	Return the analysis result from a pass `AP` for function `F`.

const DataLayout &	getDL ()
	Return datalayout used in the module.

const RetainedKnowledgeMap &	getKnowledgeMap () const
	Return the map conaining all the knowledge we have from `llvm.assume`s.

const AA::InstExclusionSetTy *	getOrCreateUniqueBlockExecutionSet (const AA::InstExclusionSetTy *BES)
	Given `BES`, return a uniqued version.

bool	stackIsAccessibleByOtherThreads ()
	Return true if the stack (llvm::Alloca) can be accessed by other threads.

bool	targetIsGPU ()
	Return true if the target is a GPU.

const ArrayRef< Function * >	getIndirectlyCallableFunctions (Attributor &A) const
	Return all functions that might be called indirectly, only valid for closed world modules (see isClosedWorldModule).

std::optional< unsigned >	getFlatAddressSpace () const
	Return the flat address space if the associated target has.

Static Public Member Functions
template<typename CBTy >
static void	foreachUse (Function &F, CBTy CB, bool LookThroughConstantExprUses=true)
	Apply `CB` to all uses of `F`.

Public Attributes
const SetVector< Function * > *const	CGSCC = nullptr
	The CG-SCC the pass is run on, or nullptr if it is a module pass.

Friends
struct	Attributor
	Give the Attributor access to the members so Attributor::identifyDefaultAbstractAttributes(...) can initialize them.

Detailed Description

Data structure to hold cached (LLVM-IR) information.

All attributes are given an InformationCache object at creation time to avoid inspection of the IR by all of them individually. This default InformationCache will hold information required by 'default' attributes, thus the ones deduced when Attributor::identifyDefaultAbstractAttributes(..) is called.

If custom abstract attributes, registered manually through Attributor::registerAA(...), need more information, especially if it is not reusable, it is advised to inherit from the InformationCache and cast the instance down in the abstract attributes.

Definition at line 1203 of file Attributor.h.

Member Typedef Documentation

◆ InstructionVectorTy

using llvm::InformationCache::InstructionVectorTy = SmallVector<Instruction *, 8>

A vector type to hold instructions.

Definition at line 1264 of file Attributor.h.

◆ OpcodeInstMapTy

using llvm::InformationCache::OpcodeInstMapTy = DenseMap<unsigned, InstructionVectorTy *>

A map type from opcodes to instructions with this opcode.

Definition at line 1267 of file Attributor.h.

Constructor & Destructor Documentation

◆ InformationCache()

llvm::InformationCache::InformationCache	(	const Module &	M,
		AnalysisGetter &	AG,
		BumpPtrAllocator &	Allocator,
		SetVector< Function * > *	CGSCC,
		bool	UseExplorer = `true`
	)

inline

Definition at line 1204 of file Attributor.h.

References Allocator, F, and llvm::AnalysisGetter::getAnalysis().

◆ ~InformationCache()

llvm::InformationCache::~InformationCache ( )

inline

Definition at line 1225 of file Attributor.h.

Member Function Documentation

◆ foreachUse()

template<typename CBTy >

static void llvm::InformationCache::foreachUse	(	Function &	F,
		CBTy	CB,
		bool	LookThroughConstantExprUses = `true`
	)

inlinestatic

Apply CB to all uses of F.

If LookThroughConstantExprUses is true, constant expression users are not given to CB but their uses are traversed transitively.

Definition at line 1242 of file Attributor.h.

References F, Idx, llvm::make_pointer_range(), llvm::SmallVectorTemplateBase< T, bool >::push_back(), llvm::SmallVectorBase< Size_T >::size(), and llvm::Value::uses().

◆ getAnalysisResultForFunction()

template<typename AP >

AP::Result * llvm::InformationCache::getAnalysisResultForFunction	(	const Function &	F,
		bool	CachedOnly = `false`
	)

inline

Return the analysis result from a pass AP for function F.

Definition at line 1307 of file Attributor.h.

References F, and llvm::AnalysisGetter::getAnalysis().

Referenced by llvm::AANonNull::isImpliedByIR(), and llvm::AA::isValidAtPosition().

◆ getDL()

const DataLayout & llvm::InformationCache::getDL ( )

inline

Return datalayout used in the module.

Definition at line 1313 of file Attributor.h.

◆ getFlatAddressSpace()

std::optional< unsigned > InformationCache::getFlatAddressSpace ( ) const

Return the flat address space if the associated target has.

Definition at line 3296 of file Attributor.cpp.

References llvm::Triple::isAMDGPU(), and llvm::Triple::isNVPTX().

◆ getIndirectlyCallableFunctions()

const ArrayRef< Function * > InformationCache::getIndirectlyCallableFunctions ( Attributor & A ) const

Return all functions that might be called indirectly, only valid for closed world modules (see isClosedWorldModule).

Definition at line 3291 of file Attributor.cpp.

References A, and assert().

◆ getKnowledgeMap()

const RetainedKnowledgeMap & llvm::InformationCache::getKnowledgeMap ( ) const

inline

Return the map conaining all the knowledge we have from llvm.assumes.

Definition at line 1316 of file Attributor.h.

Referenced by llvm::Attributor::getAttrsFromAssumes().

◆ getMustBeExecutedContextExplorer()

MustBeExecutedContextExplorer * llvm::InformationCache::getMustBeExecutedContextExplorer ( )

inline

Return MustBeExecutedContextExplorer.

Definition at line 1281 of file Attributor.h.

Referenced by llvm::Attributor::getAttrsFromAssumes().

◆ getOpcodeInstMapForFunction()

OpcodeInstMapTy & llvm::InformationCache::getOpcodeInstMapForFunction ( const Function & F )

inline

Return the map that relates "interesting" opcodes with all instructions with that opcode in F.

Definition at line 1271 of file Attributor.h.

References F.

Referenced by llvm::Attributor::checkForAllInstructions(), llvm::Attributor::identifyDefaultAbstractAttributes(), and llvm::Attributor::isValidFunctionSignatureRewrite().

◆ getOrCreateUniqueBlockExecutionSet()

const AA::InstExclusionSetTy * llvm::InformationCache::getOrCreateUniqueBlockExecutionSet ( const AA::InstExclusionSetTy * BES )

inline

Given BES, return a uniqued version.

Definition at line 1320 of file Attributor.h.

References assert(), and Success.

◆ getReadOrWriteInstsForFunction()

InstructionVectorTy & llvm::InformationCache::getReadOrWriteInstsForFunction ( const Function & F )

inline

Return the instructions in F that may read or write memory.

Definition at line 1276 of file Attributor.h.

References F.

Referenced by llvm::Attributor::checkForAllReadWriteInstructions().

◆ getTargetLibraryInfoForFunction()

TargetLibraryInfo * llvm::InformationCache::getTargetLibraryInfoForFunction ( const Function & F )

inline

Return TargetLibraryInfo for function F.

Definition at line 1286 of file Attributor.h.

References F, and llvm::AnalysisGetter::getAnalysis().

◆ invalidateAnalyses()

void llvm::InformationCache::invalidateAnalyses ( )

inline

Invalidates the cached analyses.

Valid only when using the new pass manager.

Definition at line 1303 of file Attributor.h.

References llvm::AnalysisGetter::invalidateAnalyses().

◆ isInvolvedInMustTailCall()

bool llvm::InformationCache::isInvolvedInMustTailCall ( const Argument & Arg )

inline

Return true if Arg is involved in a must-tail call, thus the argument of the caller or callee.

Definition at line 1292 of file Attributor.h.

References llvm::Argument::getParent().

◆ isOnlyUsedByAssume()

bool llvm::InformationCache::isOnlyUsedByAssume ( const Instruction & I ) const

inline

Definition at line 1297 of file Attributor.h.

References I.

◆ stackIsAccessibleByOtherThreads()

bool llvm::InformationCache::stackIsAccessibleByOtherThreads ( )

inline

Return true if the stack (llvm::Alloca) can be accessed by other threads.

Definition at line 1332 of file Attributor.h.

References targetIsGPU().

Referenced by llvm::AA::isAssumedThreadLocalObject().

◆ targetIsGPU()

bool llvm::InformationCache::targetIsGPU ( )

inline

Return true if the target is a GPU.

Definition at line 1335 of file Attributor.h.

References llvm::Triple::isAMDGPU(), and llvm::Triple::isNVPTX().

Referenced by stackIsAccessibleByOtherThreads().

Friends And Related Function Documentation

◆ Attributor

friend struct Attributor

friend

Give the Attributor access to the members so Attributor::identifyDefaultAbstractAttributes(...) can initialize them.

Definition at line 1418 of file Attributor.h.

Member Data Documentation

◆ CGSCC

const SetVector<Function *>* const llvm::InformationCache::CGSCC = nullptr

The CG-SCC the pass is run on, or nullptr if it is a module pass.

Definition at line 1261 of file Attributor.h.

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

include/llvm/Transforms/IPO/Attributor.h
lib/Transforms/IPO/Attributor.cpp

Public Types

Public Member Functions

Static Public Member Functions

Public Attributes

Friends

Detailed Description

Member Typedef Documentation

◆ InstructionVectorTy

◆ OpcodeInstMapTy

Constructor & Destructor Documentation

◆ InformationCache()

◆ ~InformationCache()

Member Function Documentation

◆ foreachUse()

◆ getAnalysisResultForFunction()

◆ getDL()

◆ getFlatAddressSpace()

◆ getIndirectlyCallableFunctions()

◆ getKnowledgeMap()

◆ getMustBeExecutedContextExplorer()

◆ getOpcodeInstMapForFunction()

◆ getOrCreateUniqueBlockExecutionSet()

◆ getReadOrWriteInstsForFunction()

◆ getTargetLibraryInfoForFunction()

◆ invalidateAnalyses()

◆ isInvolvedInMustTailCall()

◆ isOnlyUsedByAssume()

◆ stackIsAccessibleByOtherThreads()

◆ targetIsGPU()

Friends And Related Function Documentation

◆ Attributor

Member Data Documentation

◆ CGSCC