proguard.optimize.peephole
Class StoreLoadReplacer

java.lang.Object
  proguard.optimize.peephole.StoreLoadReplacer

All Implemented Interfaces:

InstructionVisitor

public class StoreLoadReplacer

extends Object

implements InstructionVisitor

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

Constructor Summary

StoreLoadReplacer(BranchTargetFinder branchTargetFinder, CodeAttrInfoEditor codeAttrInfoEditor)
Creates a new StoreLoadReplacer.

Method Summary

void	visitBranchInstruction(ClassFile classFile, MethodInfo methodInfo, CodeAttrInfo codeAttrInfo, int offset, BranchInstruction branchInstruction)
void	visitCpInstruction(ClassFile classFile, MethodInfo methodInfo, CodeAttrInfo codeAttrInfo, int offset, CpInstruction cpInstruction)
void	visitLookUpSwitchInstruction(ClassFile classFile, MethodInfo methodInfo, CodeAttrInfo codeAttrInfo, int offset, LookUpSwitchInstruction lookUpSwitchInstruction)
void	visitSimpleInstruction(ClassFile classFile, MethodInfo methodInfo, CodeAttrInfo codeAttrInfo, int offset, SimpleInstruction simpleInstruction)
void	visitTableSwitchInstruction(ClassFile classFile, MethodInfo methodInfo, CodeAttrInfo codeAttrInfo, int offset, TableSwitchInstruction tableSwitchInstruction)
void	visitVariableInstruction(ClassFile classFile, MethodInfo methodInfo, CodeAttrInfo codeAttrInfo, int offset, VariableInstruction variableInstruction)

Methods inherited from class java.lang.Object

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

Constructor Detail

StoreLoadReplacer

public StoreLoadReplacer(BranchTargetFinder branchTargetFinder,
                         CodeAttrInfoEditor codeAttrInfoEditor)

Creates a new StoreLoadReplacer.

Parameters:

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

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

Method Detail

visitSimpleInstruction

public void visitSimpleInstruction(ClassFile classFile,
                                   MethodInfo methodInfo,
                                   CodeAttrInfo codeAttrInfo,
                                   int offset,
                                   SimpleInstruction simpleInstruction)

Specified by:

visitSimpleInstruction in interface InstructionVisitor

visitCpInstruction

public void visitCpInstruction(ClassFile classFile,
                               MethodInfo methodInfo,
                               CodeAttrInfo codeAttrInfo,
                               int offset,
                               CpInstruction cpInstruction)

Specified by:

visitCpInstruction in interface InstructionVisitor

visitBranchInstruction

public void visitBranchInstruction(ClassFile classFile,
                                   MethodInfo methodInfo,
                                   CodeAttrInfo codeAttrInfo,
                                   int offset,
                                   BranchInstruction branchInstruction)

Specified by:

visitBranchInstruction in interface InstructionVisitor

visitTableSwitchInstruction

public void visitTableSwitchInstruction(ClassFile classFile,
                                        MethodInfo methodInfo,
                                        CodeAttrInfo codeAttrInfo,
                                        int offset,
                                        TableSwitchInstruction tableSwitchInstruction)

Specified by:

visitTableSwitchInstruction in interface InstructionVisitor

visitLookUpSwitchInstruction

public void visitLookUpSwitchInstruction(ClassFile classFile,
                                         MethodInfo methodInfo,
                                         CodeAttrInfo codeAttrInfo,
                                         int offset,
                                         LookUpSwitchInstruction lookUpSwitchInstruction)

Specified by:

visitLookUpSwitchInstruction in interface InstructionVisitor

visitVariableInstruction

public void visitVariableInstruction(ClassFile classFile,
                                     MethodInfo methodInfo,
                                     CodeAttrInfo codeAttrInfo,
                                     int offset,
                                     VariableInstruction variableInstruction)

Specified by:

visitVariableInstruction in interface InstructionVisitor