proguard.optimize.peephole
Class StoreLoadReplacer

java.lang.Object
  proguard.classfile.util.SimplifiedVisitor
      proguard.optimize.peephole.StoreLoadReplacer

All Implemented Interfaces:

InstructionVisitor

public class StoreLoadReplacer
extends SimplifiedVisitor
implements InstructionVisitor

This InstructionVisitor replaces store/load instruction pairs by equivalent dup/store instruction pairs.

Constructor Summary

StoreLoadReplacer(BranchTargetFinder branchTargetFinder, CodeAttributeEditor codeAttributeEditor)
Creates a new StoreLoadReplacer.

StoreLoadReplacer(BranchTargetFinder branchTargetFinder, CodeAttributeEditor codeAttributeEditor, InstructionVisitor extraInstructionVisitor)
Creates a new StoreLoadReplacer.

Method Summary

void	visitAnyInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, Instruction instruction) Visits any type of Instruction.
void	visitVariableInstruction(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VariableInstruction variableInstruction)

Methods inherited from class proguard.classfile.util.SimplifiedVisitor

visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotation, visitAnnotationDefaultAttribute, visitAnnotationElementValue, visitAnyAnnotationsAttribute, visitAnyAttribute, visitAnyClass, visitAnyConstant, visitAnyElementValue, visitAnyMember, visitAnyMethodrefConstant, visitAnyParameterAnnotationsAttribute, visitAnyRefConstant, visitAnyStackMapFrame, visitAnySwitchInstruction, visitAnyVerificationType, visitArrayElementValue, visitBranchInstruction, visitClassConstant, visitClassElementValue, visitCodeAttribute, visitConstantElementValue, visitConstantInstruction, visitConstantValueAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDeprecatedAttribute, visitDoubleConstant, visitDoubleType, visitEnclosingMethodAttribute, visitEnumConstantElementValue, visitExceptionsAttribute, visitFieldrefConstant, visitFloatConstant, visitFloatType, visitFullFrame, visitInnerClassesAttribute, visitIntegerConstant, visitIntegerType, visitInterfaceMethodrefConstant, visitLessZeroFrame, visitLibraryClass, visitLibraryField, visitLibraryMember, visitLibraryMethod, visitLineNumberTableAttribute, visitLocalVariableTableAttribute, visitLocalVariableTypeTableAttribute, visitLongConstant, visitLongType, visitLookUpSwitchInstruction, visitMethodrefConstant, visitMoreZeroFrame, visitNameAndTypeConstant, visitNullType, visitObjectType, visitProgramClass, visitProgramField, visitProgramMember, visitProgramMethod, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleAnnotationsAttribute, visitRuntimeInvisibleParameterAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleAnnotationsAttribute, visitRuntimeVisibleParameterAnnotationsAttribute, visitSameOneFrame, visitSameZeroFrame, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSignatureAttribute, visitSimpleInstruction, visitSourceDirAttribute, visitSourceFileAttribute, visitStackDoubleType, visitStackFloatType, visitStackIntegerType, visitStackLongType, visitStackMapAttribute, visitStackMapTableAttribute, visitStackNullType, visitStackObjectType, visitStackTopType, visitStackUninitializedThisType, visitStackUninitializedType, visitStringConstant, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitSyntheticAttribute, visitTableSwitchInstruction, visitTopType, visitUninitializedThisType, visitUninitializedType, visitUnknownAttribute, visitUtf8Constant, visitVariablesDoubleType, visitVariablesFloatType, visitVariablesIntegerType, visitVariablesLongType, visitVariablesNullType, visitVariablesObjectType, visitVariablesTopType, visitVariablesUninitializedThisType, visitVariablesUninitializedType

Methods inherited from class java.lang.Object

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

Methods inherited from interface proguard.classfile.instruction.visitor.InstructionVisitor

visitBranchInstruction, visitConstantInstruction, visitLookUpSwitchInstruction, visitSimpleInstruction, visitTableSwitchInstruction

Constructor Detail

StoreLoadReplacer

public StoreLoadReplacer(BranchTargetFinder branchTargetFinder,
                         CodeAttributeEditor codeAttributeEditor)

Creates a new StoreLoadReplacer.

Parameters:

branchTargetFinder - a branch target finder that has been initialized to indicate branch targets in the visited code.

codeAttributeEditor - a code editor that can be used for accumulating changes to the code.

StoreLoadReplacer

public StoreLoadReplacer(BranchTargetFinder branchTargetFinder,
                         CodeAttributeEditor codeAttributeEditor,
                         InstructionVisitor extraInstructionVisitor)

Creates a new StoreLoadReplacer.

Parameters:

branchTargetFinder - a branch target finder that has been initialized to indicate branch targets in the visited code.

codeAttributeEditor - a code editor that can be used for accumulating changes to the code.

extraInstructionVisitor - an optional extra visitor for all replaced store instructions.

Method Detail

visitAnyInstruction

public void visitAnyInstruction(Clazz clazz,
                                Method method,
                                CodeAttribute codeAttribute,
                                int offset,
                                Instruction instruction)

Description copied from class: SimplifiedVisitor

Visits any type of Instruction.

Overrides:

visitAnyInstruction in class SimplifiedVisitor

visitVariableInstruction

public void visitVariableInstruction(Clazz clazz,
                                     Method method,
                                     CodeAttribute codeAttribute,
                                     int offset,
                                     VariableInstruction variableInstruction)

Specified by:

visitVariableInstruction in interface InstructionVisitor

Overrides:

visitVariableInstruction in class SimplifiedVisitor