RFR(M) JDK-8181809 PPC64: Leverage mtfprd/mffprd on POWER8

[John Paul Adrian Glaubitz]

On Tue, Jun 20, 2017 at 08:46:25AM -0500, Matthew Brandyberry wrote:
> These instructions were introduced with POWER8 and are not available in
> earlier ISAs.

Isn't your patch then missing some guarding such that these
instructions aren't used when building on ppc64be with POWER5?

We're still building openjdk-9 in Debian on ppc64 with POWER5 besides
the ppc64el build with POWER8.

Thanks,
Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
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`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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