Given that the syntax is more verbose, what kind of performance improvements
are you seeing? If this makes a measurable difference, I have to admit I'm
pretty surprised that the JVM doesn't optimize well something as common as
iterating over an array list.
On Thu, Jun 4, 2009 at 1:54 PM, <[email protected]> wrote:
> Reviewers: Lex, scottb,
>
> Description:
> Rewrite loops of the form:
>
> List<T> args;
> for (T arg : args) {
> }
>
> to use an explicit index. This cuts loop overhead by avoiding the need
> to instantiate an Iterator object.
>
> This speeds up a 6-permutation Showcase compile (with -soyc and -style
> PRETTY) by about 3%.
>
>
>
> Please review this at http://gwt-code-reviews.appspot.com/34829
>
> Affected files:
> dev/core/src/com/google/gwt/core/ext/soyc/impl/StoryRecorder.java
> dev/core/src/com/google/gwt/dev/jjs/SourceInfoCorrelation.java
> dev/core/src/com/google/gwt/dev/jjs/ast/JProgram.java
> dev/core/src/com/google/gwt/dev/jjs/ast/JTypeOracle.java
> dev/core/src/com/google/gwt/dev/jjs/impl/CloneExpressionVisitor.java
> dev/core/src/com/google/gwt/dev/jjs/impl/ControlFlowAnalyzer.java
> dev/core/src/com/google/gwt/dev/jjs/impl/MethodInliner.java
> dev/core/src/com/google/gwt/dev/jjs/impl/TypeTightener.java
> dev/core/src/com/google/gwt/dev/js/JsInliner.java
> dev/core/src/com/google/gwt/dev/js/ast/JsVisitor.java
>
>
>
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