llvm::GVNPass Class Reference

The core GVN pass object. More...

#include "llvm/Transforms/Scalar/GVN.h"

Inheritance diagram for llvm::GVNPass:

Classes
struct	Expression
class	ValueTable
	This class holds the mapping between values and value numbers. More...

Public Member Functions
	GVNPass (GVNOptions Options={})
LLVM_ABI PreservedAnalyses	run (Function &F, FunctionAnalysisManager &AM)
	Run the pass over the function.
LLVM_ABI void	printPipeline (raw_ostream &OS, function_ref< StringRef(StringRef)> MapClassName2PassName)
LLVM_ABI void	salvageAndRemoveInstruction (Instruction *I)
	This removes the specified instruction from our various maps and marks it for deletion.
DominatorTree &	getDominatorTree () const
AAResults *	getAliasAnalysis () const
MemoryDependenceResults &	getMemDep () const
LLVM_ABI bool	isPREEnabled () const
LLVM_ABI bool	isLoadPREEnabled () const
LLVM_ABI bool	isLoadInLoopPREEnabled () const
LLVM_ABI bool	isLoadPRESplitBackedgeEnabled () const
LLVM_ABI bool	isMemDepEnabled () const
LLVM_ABI bool	isMemorySSAEnabled () const
Public Member Functions inherited from llvm::PassInfoMixin< GVNPass >
void	printPipeline (raw_ostream &OS, function_ref< StringRef(StringRef)> MapClassName2PassName)

Friends
class	gvn::GVNLegacyPass
struct	DenseMapInfo< Expression >

Additional Inherited Members
Static Public Member Functions inherited from llvm::PassInfoMixin< GVNPass >
static StringRef	name ()
	Gets the name of the pass we are mixed into.

Detailed Description

The core GVN pass object.

FIXME: We should have a good summary of the GVN algorithm implemented by this particular pass here.

Definition at line 126 of file GVN.h.

Constructor & Destructor Documentation

GVNPass()

llvm::GVNPass::GVNPass ( GVNOptions Options = {} )

inline

Definition at line 132 of file GVN.h.

Referenced by llvm::GVNPass::ValueTable::operator=(), and llvm::GVNPass::ValueTable::phiTranslate().

Member Function Documentation

getAliasAnalysis()

AAResults * llvm::GVNPass::getAliasAnalysis ( ) const

inline

Definition at line 146 of file GVN.h.

getDominatorTree()

DominatorTree & llvm::GVNPass::getDominatorTree ( ) const

inline

Definition at line 145 of file GVN.h.

Referenced by ConstructSSAForLoadSet().

getMemDep()

MemoryDependenceResults & llvm::GVNPass::getMemDep ( ) const

inline

Definition at line 147 of file GVN.h.

isLoadInLoopPREEnabled()

bool GVNPass::isLoadInLoopPREEnabled

(

)

const

Definition at line 864 of file GVN.cpp.

References GVNEnableLoadInLoopPRE.

isLoadPREEnabled()

bool GVNPass::isLoadPREEnabled

(

)

const

Definition at line 860 of file GVN.cpp.

References GVNEnableLoadPRE.

isLoadPRESplitBackedgeEnabled()

bool GVNPass::isLoadPRESplitBackedgeEnabled

(

)

const

Definition at line 868 of file GVN.cpp.

References GVNEnableSplitBackedgeInLoadPRE.

isMemDepEnabled()

bool GVNPass::isMemDepEnabled

(

)

const

Definition at line 873 of file GVN.cpp.

References GVNEnableMemDep.

Referenced by run().

isMemorySSAEnabled()

bool GVNPass::isMemorySSAEnabled

(

)

const

Definition at line 877 of file GVN.cpp.

References GVNEnableMemorySSA.

Referenced by run().

isPREEnabled()

bool GVNPass::isPREEnabled

(

)

const

Definition at line 856 of file GVN.cpp.

References GVNEnablePRE.

printPipeline()

void GVNPass::printPipeline	(	raw_ostream &	OS,
		function_ref< StringRef(StringRef)>	MapClassName2PassName )

Definition at line 913 of file GVN.cpp.

References printPipeline().

Referenced by printPipeline().

run()

PreservedAnalyses GVNPass::run	(	Function &	F,
		FunctionAnalysisManager &	AM )

Run the pass over the function.

Definition at line 881 of file GVN.cpp.

References llvm::PreservedAnalyses::all(), assert(), Changed, F, llvm::AnalysisManager< IRUnitT, ExtraArgTs >::getCachedResult(), llvm::AnalysisManager< IRUnitT, ExtraArgTs >::getResult(), isMemDepEnabled(), isMemorySSAEnabled(), and llvm::PreservedAnalyses::preserve().

salvageAndRemoveInstruction()

void GVNPass::salvageAndRemoveInstruction

(

Instruction *

I

)

This removes the specified instruction from our various maps and marks it for deletion.

Definition at line 933 of file GVN.cpp.

References I, llvm::salvageDebugInfo(), and llvm::salvageKnowledge().

Friends And Related Symbol Documentation

DenseMapInfo< Expression >

friend struct DenseMapInfo< Expression >

friend

Definition at line 245 of file GVN.h.

gvn::GVNLegacyPass

friend class gvn::GVNLegacyPass

friend

Definition at line 245 of file GVN.h.

Referenced by llvm::createGVNPass().

---

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

• include/llvm/Transforms/Scalar/GVN.h
• lib/Transforms/Scalar/GVN.cpp