class FunctionPass

Declaration

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

Description

FunctionPass class - This class is used to implement most global optimizations. Optimizations should subclass this class if they meet the following constraints: 1. Optimizations are organized globally, i.e., a function at a time 2. Optimizing a function does not cause the addition or removal of any functions in the module

Declared at: llvm/include/llvm/Pass.h:282

Inherits from: Pass

Method Overview

• public FunctionPass(char & pid)
• public void assignPassManager(llvm::PMStack & PMS, llvm::PassManagerType T)
• public llvm::Pass * createPrinterPass(llvm::raw_ostream & OS, const std::string & Banner) const
• public llvm::PassManagerType getPotentialPassManagerType() const
• public virtual bool runOnFunction(llvm::Function & F)
• protected bool skipFunction(const llvm::Function & F) const

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

¶FunctionPass(char& pid)

Declared at: llvm/include/llvm/Pass.h:284

Parameters

char& pid

¶void assignPassManager(llvm::PMStack& PMS,
                       llvm::PassManagerType T)

Description

Each pass is responsible for assigning a pass manager to itself. PMS is the stack of available pass manager.

Declared at: llvm/include/llvm/Pass.h:294

Parameters

llvm::PMStack& PMS

llvm::PassManagerType T

¶llvm::Pass* createPrinterPass(
    llvm::raw_ostream& OS,
    const std::string& Banner) const

Description

createPrinterPass - Get a function printer pass.

Declared at: llvm/include/llvm/Pass.h:287

Parameters

llvm::raw_ostream& OS

const std::string& Banner

¶llvm::PassManagerType
getPotentialPassManagerType() const

Description

Return what kind of Pass Manager can manage this pass.

Declared at: llvm/include/llvm/Pass.h:297

¶virtual 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/Pass.h:292

Parameters

llvm::Function& F

¶bool skipFunction(const llvm::Function& F) const

Description

Optional passes call this function to check whether the pass should be skipped. This is the case when Attribute::OptimizeNone is set or when optimization bisect is over the limit.

Declared at: llvm/include/llvm/Pass.h:303

Parameters

const llvm::Function& F