RFR: 8256730: Code that uses Object.checkIndex() range checks doesn't optimize well

Fri Dec 4 12:05:16 UTC 2020

On Fri, 20 Nov 2020 16:36:41 GMT, Paul Sandoz <psandoz at openjdk.org> wrote:

>>>> By transforming (CastII (AddI x y)) into (AddI (CastII x) (CastII y))
>> some CastII can be eliminated which improves address computation code.
>> 
>>> Wasn't there a recent bugfix that did the opposite? I think it was in a different context but I will try to find out.
>> 
>> False alarm. It was a completely different problem.
>
> Code generation on x86 is good. If also improves other cases, for example https://github.com/richardstartin/vectorbenchmarks/blob/master/src/main/java/com/openkappa/panama/vectorbenchmarks/BitmapLogicals.java#L69

Anyone for a review of this one?

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PR: https://git.openjdk.java.net/jdk/pull/1342