llvm::SimplifyCFGPass Class Reference

A pass to simplify and canonicalize the CFG of a function. More...

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

Inheritance diagram for llvm::SimplifyCFGPass:

Public Member Functions
LLVM_ABI	SimplifyCFGPass ()
	The default constructor sets the pass options to create canonical IR, rather than optimal IR.
LLVM_ABI	SimplifyCFGPass (const SimplifyCFGOptions &PassOptions)
	Construct a pass with optional optimizations.
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)
Public Member Functions inherited from llvm::detail::PassInfoMixin< SimplifyCFGPass >
void	printPipeline (raw_ostream &OS, function_ref< StringRef(StringRef)> MapClassName2PassName)

Additional Inherited Members
Static Public Member Functions inherited from llvm::OptionalPassInfoMixin< SimplifyCFGPass >
static bool	isRequired ()
Static Public Member Functions inherited from llvm::detail::InfoMixin< SimplifyCFGPass >
static StringRef	name ()
	Gets the name of the pass we are mixed into.

Detailed Description

A pass to simplify and canonicalize the CFG of a function.

This pass iteratively simplifies the entire CFG of a function. It may change or remove control flow to put the CFG into a canonical form expected by other passes of the mid-level optimizer. Depending on the specified options, it may further optimize control-flow to create non-canonical forms.

Definition at line 30 of file SimplifyCFG.h.

Constructor & Destructor Documentation

SimplifyCFGPass() [1/2]

SimplifyCFGPass::SimplifyCFGPass ( )

default

The default constructor sets the pass options to create canonical IR, rather than optimal IR.

That is, by default we bypass transformations that are likely to improve performance but make analysis for other passes more difficult.

References F, and LLVM_ABI.

SimplifyCFGPass() [2/2]

SimplifyCFGPass::SimplifyCFGPass

(

const SimplifyCFGOptions &

PassOptions

)

Construct a pass with optional optimizations.

Definition at line 312 of file SimplifyCFGPass.cpp.

Member Function Documentation

printPipeline()

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

Definition at line 315 of file SimplifyCFGPass.cpp.

References printPipeline().

Referenced by printPipeline().

run()

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

Run the pass over the function.

Definition at line 340 of file SimplifyCFGPass.cpp.

References llvm::PreservedAnalyses::all(), F, llvm::AnalysisManager< IRUnitT, ExtraArgTs >::getResult(), llvm::PreservedAnalyses::preserve(), llvm::RequireAndPreserveDomTree, and simplifyFunctionCFG().

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

• include/llvm/Transforms/Scalar/SimplifyCFG.h
• lib/Transforms/Scalar/SimplifyCFGPass.cpp