class LoopInfoWrapperPass

Declaration

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

Description

The legacy pass manager's analysis pass to compute loop information.

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1219

Inherits from: FunctionPass

Member Variables

public static char ID

Method Overview

• public LoopInfoWrapperPass()
• public void getAnalysisUsage(llvm::AnalysisUsage & AU) const
• public llvm::LoopInfo & getLoopInfo()
• public const llvm::LoopInfo & getLoopInfo() const
• public void print(llvm::raw_ostream & O, const llvm::Module * M = nullptr) const
• public void releaseMemory()
• public bool runOnFunction(llvm::Function & F)
• public void verifyAnalysis() const

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

¶LoopInfoWrapperPass()

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1225

¶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/Analysis/LoopInfo.h:1239

Parameters

llvm::AnalysisUsage& AU

¶llvm::LoopInfo& getLoopInfo()

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1227

¶const llvm::LoopInfo& getLoopInfo() const

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1228

¶void print(llvm::raw_ostream& O,
           const llvm::Module* M = nullptr) const

Description

print - Print out the internal state of the pass. This is called by Analyze to print out the contents of an analysis. Otherwise it is not necessary to implement this method. Beware that the module pointer MAY be null. This automatically forwards to a virtual function that does not provide the Module* in case the analysis doesn't need it it can just be ignored.

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1237

Parameters

llvm::raw_ostream& O

const llvm::Module* M = nullptr

¶void releaseMemory()

Description

releaseMemory() - This member can be implemented by a pass if it wants to be able to release its memory when it is no longer needed. The default behavior of passes is to hold onto memory for the entire duration of their lifetime (which is the entire compile time). For pipelined passes, this is not a big deal because that memory gets recycled every time the pass is invoked on another program unit. For IP passes, it is more important to free memory when it is unused. Optionally implement this function to release pass memory when it is no longer used.

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1235

¶bool runOnFunction(llvm::Function& F)

Description

Calculate the natural loop information for a given function.

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1231

Parameters

llvm::Function& F

¶void verifyAnalysis() const

Description

verifyAnalysis() - This member can be implemented by a analysis pass to check state of analysis information.

Declared at: llvm/include/llvm/Analysis/LoopInfo.h:1233