at.dms.backend
Class Optimizer

java.lang.Object
  at.dms.backend.Optimizer

All Implemented Interfaces:

AccessorContainer

public class Optimizer
extends Object
implements AccessorContainer

This class is the entry point for the peephole byte code optimizer

Constructor Summary

Optimizer(CodeInfo codeInfo)
Constructs a new optimizer object.

Method Summary

CodeInfo	getCodeInfo() Returns a new, optimized code info structure.
InstructionHandle	getCodeStart()
static CodeInfo	optimize(CodeInfo code) Optimizes the byte code for a single method.
static CodeInfo	optimize(MethodInfo info, CodeInfo code, BackendOptions options) Optimizes the byte code for a single method.
void	setCodeStart(InstructionHandle handle)
void	transformAccessors(AccessorTransformer transformer) Transforms targets (deferences to actual instructions).

Methods inherited from class java.lang.Object

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

Constructor Detail

Optimizer

public Optimizer(CodeInfo codeInfo)

Constructs a new optimizer object.

Method Detail

optimize

public static CodeInfo optimize(MethodInfo info,
                                CodeInfo code,
                                BackendOptions options)

Optimizes the byte code for a single method.

optimize

public static CodeInfo optimize(CodeInfo code)

Optimizes the byte code for a single method.

getCodeInfo

public CodeInfo getCodeInfo()

Returns a new, optimized code info structure.

transformAccessors

public void transformAccessors(AccessorTransformer transformer)
                        throws BadAccessorException

Transforms targets (deferences to actual instructions).

Specified by:

transformAccessors in interface AccessorContainer

Parameters:

transformer - the transformer used to transform accessors

Throws:

BadAccessorException

setCodeStart

public void setCodeStart(InstructionHandle handle)

getCodeStart

public InstructionHandle getCodeStart()