RFR (L) 8037210: Get rid of char-based descriptions 'J' of basic types

[Paul Sandoz]

On Apr 8, 2014, at 1:53 AM, Vladimir Ivanov <vladimir.x.ivanov at oracle.com> wrote:

> Thanks, Chris.
> 
> I have to do one more iteration:
> http://cr.openjdk.java.net/~vlivanov/8037210/webrev.05/
> 
> I have to revert changes related to BMH::reinvokerTarget.
> 
> Removal of reinvokerTarget in generated concrete BMH classes introduces serious performance regression, since BMH::reinvokerTarget is much more complex than an accessor and it disturbs inlining decisions in too many places.
> 

OK, IIUC it's just reintroducing some original code back into BMH, nothing else has changed. If so +1 , lets get this pushed :-)

I can now see why it might cause a perf issue if the following was used instead:

    @Override MethodHandle reinvokerTarget() {
        try {
            return (MethodHandle) argL(0);
        } catch (Throwable ex) {
            throw newInternalError(ex);
        }
    }

Paul.

[1] http://www.diffnow.com/?report=biopj