A simple and fast domtree-based CSE pass. More...

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

Inheritance diagram for llvm::EarlyCSEPass:

Public Member Functions
	EarlyCSEPass (bool UseMemorySSA=false)

PreservedAnalyses	run (Function &F, FunctionAnalysisManager &AM)
	Run the pass over the function.

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

Public Member Functions inherited from llvm::PassInfoMixin< EarlyCSEPass >
void	printPipeline (raw_ostream &OS, function_ref< StringRef(StringRef)> MapClassName2PassName)

Public Attributes
bool	UseMemorySSA

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

Detailed Description

A simple and fast domtree-based CSE pass.

This pass does a simple depth-first walk over the dominator tree, eliminating trivially redundant instructions and using instsimplify to canonicalize things as it goes. It is intended to be fast and catch obvious cases so that instcombine and other passes are more effective. It is expected that a later pass of GVN will catch the interesting/hard cases.

Definition at line 30 of file EarlyCSE.h.

Constructor & Destructor Documentation

◆ EarlyCSEPass()

llvm::EarlyCSEPass::EarlyCSEPass ( bool UseMemorySSA = false )

inline

Definition at line 31 of file EarlyCSE.h.

Member Function Documentation

◆ printPipeline()

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

Definition at line 1848 of file EarlyCSE.cpp.

References OS, printPipeline(), and UseMemorySSA.

Referenced by printPipeline().

◆ run()

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

Run the pass over the function.

Definition at line 1827 of file EarlyCSE.cpp.

References llvm::PreservedAnalyses::all(), CSE, F, llvm::AnalysisManager< IRUnitT, ExtraArgTs >::getResult(), llvm::PreservedAnalyses::preserve(), llvm::PreservedAnalyses::preserveSet(), and UseMemorySSA.

Member Data Documentation

◆ UseMemorySSA

bool llvm::EarlyCSEPass::UseMemorySSA

Definition at line 38 of file EarlyCSE.h.

Referenced by printPipeline(), and run().

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

include/llvm/Transforms/Scalar/EarlyCSE.h
lib/Transforms/Scalar/EarlyCSE.cpp

Public Member Functions

Public Attributes

Additional Inherited Members