GVNPassImpl Class Reference

The core GVN pass object. More...

Classes
struct	AvailableValue
	Represents a particular available value that we know how to materialize. More...
struct	AvailableValueInBlock
	Represents an AvailableValue which can be rematerialized at the end of the associated BasicBlock. More...

Public Member Functions
	GVNPassImpl (llvm::GVNOptions Options={})
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
bool	isScalarPREEnabled () const
bool	isLoadPREEnabled () const
bool	isLoadInLoopPREEnabled () const
bool	isLoadPRESplitBackedgeEnabled () const
bool	isMemDepEnabled () const
bool	isMemorySSAEnabled () const

Friends
class	llvm::GVNPass
class	GVNLegacyPass

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 281 of file GVN.cpp.

Constructor & Destructor Documentation

GVNPassImpl()

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

inline

Definition at line 288 of file GVN.cpp.

Member Function Documentation

getAliasAnalysis()

AAResults * GVNPassImpl::getAliasAnalysis ( ) const

inline

Definition at line 295 of file GVN.cpp.

getDominatorTree()

DominatorTree & GVNPassImpl::getDominatorTree ( ) const

inline

Definition at line 294 of file GVN.cpp.

getMemDep()

MemoryDependenceResults & GVNPassImpl::getMemDep ( ) const

inline

Definition at line 296 of file GVN.cpp.

isLoadInLoopPREEnabled()

bool GVNPassImpl::isLoadInLoopPREEnabled

(

)

const

Definition at line 1173 of file GVN.cpp.

References GVNEnableLoadInLoopPRE.

isLoadPREEnabled()

bool GVNPassImpl::isLoadPREEnabled

(

)

const

Definition at line 1169 of file GVN.cpp.

References GVNEnableLoadPRE.

isLoadPRESplitBackedgeEnabled()

bool GVNPassImpl::isLoadPRESplitBackedgeEnabled

(

)

const

Definition at line 1177 of file GVN.cpp.

References GVNEnableSplitBackedgeInLoadPRE.

isMemDepEnabled()

bool GVNPassImpl::isMemDepEnabled

(

)

const

Definition at line 1182 of file GVN.cpp.

References GVNEnableMemDep, and isMemorySSAEnabled().

isMemorySSAEnabled()

bool GVNPassImpl::isMemorySSAEnabled

(

)

const

Definition at line 1191 of file GVN.cpp.

References GVNEnableMemorySSA.

Referenced by isMemDepEnabled().

isScalarPREEnabled()

bool GVNPassImpl::isScalarPREEnabled

(

)

const

Definition at line 1165 of file GVN.cpp.

References GVNEnableScalarPRE.

salvageAndRemoveInstruction()

void GVNPassImpl::salvageAndRemoveInstruction

(

Instruction *

I

)

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

Definition at line 1230 of file GVN.cpp.

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

Friends And Related Symbol Documentation

GVNLegacyPass

friend class GVNLegacyPass

friend

Definition at line 307 of file GVN.cpp.

References F, and GVNLegacyPass.

Referenced by GVNLegacyPass.

llvm::GVNPass

friend class llvm::GVNPass

friend

Definition at line 306 of file GVN.cpp.

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

• lib/Transforms/Scalar/GVN.cpp