[8u20]: Request for approval - 8035394: PPC64: Make usage of intrinsic dsqrt depend on processor recognition.

[Vladimir Kozlov]

Goetz,

I don't think we need to get approval to push into ppcaix stage repo.
We will prepare combined request for approval when we are ready to push from ppc-aix stage repo into jdk8u-dev.
Thing about this as for other hotspot changes. We push reviewed changeset into 8u hotspot repo and after PIT is done 
Alejandro is sending approval request for all changes.

I will push both these changes into ppc-aix-port/stage/hotspot later.

Regards,
Vladimir

On 2/24/14 2:18 AM, Lindenmaier, Goetz wrote:
> Hi,
>
> please review this change for backport to 8u via ppc-aix-port/stage.
>
> Only some PPC processors have a sqrt instruction.
> Currently, intrinsic for dsqrt is used if a corresponding rule is implemented in the .ad file (has_match_rule()).
> Instead, call match_ruole_supported(), which allows to check processor properties.
> Also adapt PPC64 .ad file to this.
>
> changeset: http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/0f19095fd8c1
> bug:   https://bugs.openjdk.java.net/browse/JDK-8035394
> review:  http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-February/012642.html
>
> original webrev: http://cr.openjdk.java.net/~goetz/webrevs/8035394-1-fltRck/
>
> Thanks and best regards,
> Goetz.
>