coins.opt
Class LoopUnswitching

java.lang.Object
  coins.opt.LoopExpansion
      coins.opt.LoopUnswitching

public class LoopUnswitching

extends LoopExpansion

title: LoopUnswitching class.

description: If-Expand LoopStmt.

Field Summary

Fields inherited from class coins.opt.LoopExpansion

fDbgLevel, flowRoot, fMaxAllowableNodesInLoopBody, fNumberOfGeneralRegisters, fOptionMap, fOptions, hirRoot, ioRoot, symRoot

Constructor Summary

LoopUnswitching(HirRoot phirRoot)

Method Summary

boolean	doSubprogram(SubpDefinition pSubpDef) Do Loop-If Expand optimization in subprogram.
protected boolean	isExpansible(ForStmt pForStmt) Check ForStmt may be optimized by Loop-if expansion.
protected void	pickUpVariables(ForStmt pForStmt) Analize variables in ForStmt contains to get information to doing Loop-If expanding optimization.
protected boolean	removeIfStmt(ForStmt pForStmt) Remove IfStmt from pForStmt

Methods inherited from class coins.opt.LoopExpansion

calcStatementCount, getArrayVar, getDebug, getMaxAllowableStmtsInLoopBody, getSimpleExp, getSubscriptVar, hasBadElement, isBadElement, setMaxAllowableStmtsInLoopBody

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LoopUnswitching

public LoopUnswitching(HirRoot phirRoot)

Method Detail

doSubprogram

public boolean doSubprogram(SubpDefinition pSubpDef)

Do Loop-If Expand optimization in subprogram.

Specified by:

doSubprogram in class LoopExpansion

Parameters:

pSubpDef - SubpDefinition to do optimization.

Returns:

true if optimized, false if else.

isExpansible

protected boolean isExpansible(ForStmt pForStmt)

Check ForStmt may be optimized by Loop-if expansion.

Parameters:

pForStmt -

Returns:

true pForStmt may be optimized by Loop-if expansion. false pForStmt is not optimized by Loop-if expansion.

pickUpVariables

protected void pickUpVariables(ForStmt pForStmt)

Analize variables in ForStmt contains to get information to doing Loop-If expanding optimization.

Parameters:

pForStmt - ForStmt to analize.

removeIfStmt

protected boolean removeIfStmt(ForStmt pForStmt)

Remove IfStmt from pForStmt

Parameters:

pForStmt - ForStmt object.

Returns:

true if optimized, false if else.