Class AbstractEPatternOptimizer
java.lang.Object
com.pnfsoftware.jeb.core.AbstractPlugin
com.pnfsoftware.jeb.core.units.code.asm.decompiler.opt.AbstractOptimizer<IERoutineContext>
com.pnfsoftware.jeb.core.units.code.asm.decompiler.ir.opt.AbstractEOptimizer
com.pnfsoftware.jeb.core.units.code.asm.decompiler.ir.opt.AbstractEPatternOptimizer
- All Implemented Interfaces:
IPlugin
,IEOptimizer
,IOptimizer<IERoutineContext>
Pattern-Matcher-Replacer optimizers run with the policy
DataChainsUpdatePolicy.UPDATE_IF_OPTIMIZED
or
DataChainsUpdatePolicy.UPDATE_IF_REQUIRED
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Field Summary
Fields inherited from class com.pnfsoftware.jeb.core.units.code.asm.decompiler.ir.opt.AbstractEOptimizer
cfg, ectx
Fields inherited from interface com.pnfsoftware.jeb.core.units.code.asm.decompiler.opt.IOptimizer
DEAD_CODE_REMOVER, DEOBFUSCATOR, PRIORITY_HIGH, PRIORITY_LOW, PRIORITY_STANDARD
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Constructor Summary
ConstructorsConstructorDescriptionCreate a default matcher with aIF_OPTIMIZED
policy.AbstractEPatternOptimizer
(boolean updateChainsIfOptimized) Create a matcher. -
Method Summary
Modifier and TypeMethodDescriptionprotected abstract Collection<EPatternCompiler.EPattern>
protected int
perform()
Perform the optimization pass.performOnExpression
(IEGeneric exp, IERoutineContext ectx) The default implementation does nothing and returns null.Methods inherited from class com.pnfsoftware.jeb.core.units.code.asm.decompiler.ir.opt.AbstractEOptimizer
cleanCfg, deleteUnreachableTrampoline, dumpCfg, getDataChainsUpdatePolicy, getMasterOptimizer, getMasterOptimizerSafe, performOnTarget, postPerform, postPerform, setDataChainsUpdatePolicy, verifyCfg
Methods inherited from class com.pnfsoftware.jeb.core.units.code.asm.decompiler.opt.AbstractOptimizer
addTag, getName, getPluginInformation, getPreferredExecutionStage, getPriority, getRequiredModeThreshold, getTags, getType, removeTag, setMasterOptimizer, setName, setPreferredExecutionStage, setPriority, setRequiredModeThreshold, setType
Methods inherited from class com.pnfsoftware.jeb.core.AbstractPlugin
dispose, getData, setData
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface com.pnfsoftware.jeb.core.units.code.asm.decompiler.opt.IOptimizer
getPreferredExecutionStage, getPriority, getRequiredModeThreshold, getTags, getType, setMasterOptimizer
Methods inherited from interface com.pnfsoftware.jeb.core.IPlugin
dispose, getData, getPluginInformation, setData
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Constructor Details
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AbstractEPatternOptimizer
public AbstractEPatternOptimizer()Create a default matcher with aIF_OPTIMIZED
policy. -
AbstractEPatternOptimizer
public AbstractEPatternOptimizer(boolean updateChainsIfOptimized) Create a matcher.- Parameters:
updateChainsIfOptimized
- if true, the DFA update policy is set toIF_OPTIMIZED
; else, it is set toIF_REQUIRED
and the requirement comes from a successful match-and-replace on a pattern having theEPatternCompiler.FLAG_INVALIDATE_DFA
flag.
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Method Details
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getPatterns
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perform
protected int perform()Description copied from class:AbstractEOptimizer
Perform the optimization pass. The caller may request that data chains not be updated, whenever possible. (They may be updated internally by the optimizer, which has the final say as to how and when DFA calculations should be run.)The above means that data chains after running this method may or may not have been modified, and may or may not be in a consistent state with the optimized CFG.
- Specified by:
perform
in classAbstractEOptimizer
- Returns:
- the result of a call to one of
postPerform(...)
or a negative number indicating an error has occurred and the optimizing process should be aborted
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performOnExpression
Description copied from class:AbstractEOptimizer
The default implementation does nothing and returns null.- Specified by:
performOnExpression
in interfaceIEOptimizer
- Overrides:
performOnExpression
in classAbstractEOptimizer
- Parameters:
exp
- IR expression to optimizeectx
- helper routine context- Returns:
- non-null if the expression was optimized; null otherwise
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