RFR(XS): 8239363: PPC64: Wrong code generation after JDK-8183574

[Thomas Stüfe]

Looks good Martin.

Brackets look a bit excessive but I guess one never has enough brackets :)

Cheers, Thomas

On Tue, Feb 18, 2020 at 6:06 PM Doerr, Martin <martin.doerr at sap.com> wrote:

> Hi,
>
> JDK-8183574: "Unify the is_power_of_2 functions" broke a piece of PPC64
> code.
>
> Issue with more details:
> https://bugs.openjdk.java.net/browse/JDK-8239363
>
> We need to restore usage of log2_long.
> Webrev:
> http://cr.openjdk.java.net/~mdoerr/8239363_ppc64_andi/webrev.00/
>
> Please review.
>
> Best regards,
> Martin
>
>