More performance explorations

[Thomas E Enebo]

Out of curiousity...How tough is it to get new optimizations into
u{1-n} releases?  I know new ones go in all the time, I am just
wondering how onerous the process is for approving stuff like that.

-Tom

On Thu, Jun 2, 2011 at 11:27 AM, John Rose <john.r.rose at oracle.com> wrote:
> On Jun 2, 2011, at 9:01 AM, Charles Oliver Nutter wrote:
>
>> Ok, the ricochet flag performs in the expected range...but still
>> slower than the old logic, and also slower than the 5/13 macosx build.
>
> You mean java -Djava.lang.invoke.GWT_FORCE_RICOCHET_FRAMES=true?
>
> If so, let's look at the code again.  I want to see if those extra interface casts are still in there.  We can get rid of them if they add significant bulk to the code.
>
> Or maybe there's a failed inline.
>
> The door is about closed on JDK7 code changes (and the backed-off GWT stuff is in).  I can help you work around weaknesses in the JDK7 code, by adjusting the JRuby code.  Not optimal, but maybe practical.
>
> Best wishes,
> -- John
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