class InstructionCombiningPass

Declaration

class InstructionCombiningPass : public FunctionPass { /* full declaration omitted */ };

Description

The legacy pass manager's instcombine pass. This is a basic whole-function wrapper around the instcombine utility. It will try to combine all instructions in the function.

Declared at: llvm/include/llvm/Transforms/InstCombine/InstCombine.h:43

Inherits from: FunctionPass

Member Variables

public static char ID

Method Overview

• public InstructionCombiningPass(bool ExpensiveCombines = true)
• public InstructionCombiningPass(bool ExpensiveCombines, unsigned int MaxIterations)
• public void getAnalysisUsage(llvm::AnalysisUsage & AU) const
• public bool runOnFunction(llvm::Function & F)

Inherited from FunctionPass:

• public assignPassManager
• public createPrinterPass
• public getPotentialPassManagerType
• public runOnFunction
• protected skipFunction

Inherited from Pass:

• public assignPassManager
• public createPass
• public createPrinterPass
• public doFinalization
• public doInitialization
• public dump
• public dumpPassStructure
• public getAdjustedAnalysisPointer
• public getAnalysis
• public getAnalysis
• public getAnalysisID
• public getAnalysisID
• public getAnalysisIfAvailable
• public getAnalysisUsage
• public getAsImmutablePass
• public getAsPMDataManager
• public getPassID
• public getPassKind
• public getPassName
• public getPotentialPassManagerType
• public getResolver
• public lookupPassInfo
• public lookupPassInfo
• public mustPreserveAnalysisID
• public preparePassManager
• public print
• public releaseMemory
• public setResolver
• public verifyAnalysis

Methods

¶InstructionCombiningPass(
    bool ExpensiveCombines = true)

Declared at: llvm/include/llvm/Transforms/InstCombine/InstCombine.h:51

Parameters

bool ExpensiveCombines = true

¶InstructionCombiningPass(
    bool ExpensiveCombines,
    unsigned int MaxIterations)

Declared at: llvm/include/llvm/Transforms/InstCombine/InstCombine.h:52

Parameters

bool ExpensiveCombines

unsigned int MaxIterations

¶void getAnalysisUsage(
    llvm::AnalysisUsage& AU) const

Description

getAnalysisUsage - This function should be overriden by passes that need analysis information to do their job. If a pass specifies that it uses a particular analysis result to this function, it can then use the getAnalysis <AnalysisType >() function, below.

Declared at: llvm/include/llvm/Transforms/InstCombine/InstCombine.h:55

Parameters

llvm::AnalysisUsage& AU

¶bool runOnFunction(llvm::Function& F)

Description

runOnFunction - Virtual method overriden by subclasses to do the per-function processing of the pass.

Declared at: llvm/include/llvm/Transforms/InstCombine/InstCombine.h:56

Parameters

llvm::Function& F