com.google.gwt.dev.jjs.impl

Class DeadCodeElimination

java.lang.Object

com.google.gwt.dev.jjs.impl.DeadCodeElimination

public class DeadCodeElimination
extends Object

Removes certain kinds of dead code, and simplifies certain expressions. This pass focuses on intraprocedural optimizations, that is, optimizations that can be performed inside of a single method body (and usually a single expression) rather than global transformations. Global optimizations done in other passes will feed into this, however.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	DeadCodeElimination.DeadCodeVisitor Eliminates dead or unreachable code when possible, and makes local simplifications like changing "x || true" to "x".
static class	DeadCodeElimination.FindBreakContinueStatementsVisitor Examines code to find out whether it contains any break or continue statements.

Field Summary

Fields

Modifier and Type	Field and Description
static String	NAME

Constructor Summary

Constructors

Constructor and Description
DeadCodeElimination(JProgram program)

Method Summary

Modifier and Type	Method and Description
static OptimizerStats	exec(JProgram program)
static OptimizerStats	exec(JProgram program, JNode node)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

NAME

public static final String NAME

Constructor Detail

DeadCodeElimination

public DeadCodeElimination(JProgram program)

Method Detail

exec

public static OptimizerStats exec(JProgram program)

exec

public static OptimizerStats exec(JProgram program,
                                  JNode node)