RFR: 8259822: [PPC64] Support the prefixed instruction format added in POWER10 [v5]

Tue Mar 23 16:05:47 UTC 2021

On Mon, 1 Feb 2021 18:36:39 GMT, Corey Ashford <cashford at openjdk.org> wrote:

>> Ok, got it.  Thanks for the explanation.  Maybe an extra comment in the code saying essentially what you said here would be appropriate?
>
> Looks good!

Do we still need to skip over the nop? I think this should no longer happen.

>> Hmm, I'm confused.  I don't see any other reference to loadConL34 in ppc.ad.
>
> I wish we knew why this predicate is causing an issue, but I guess it's not important because the operand type provides sufficient limiting of the instruct.

Ok, I think we can't use a predicate for Set dst src. It's fine to have it in the operand.
Would be nice to describe this in the comment.

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PR: https://git.openjdk.java.net/jdk/pull/2095