RFR: 8319690: [AArch64] C2 compilation hits offset_ok_for_immed: assert "c2 compiler bug" [v4]

[Andrew Haley]

On Thu, 4 Jul 2024 14:16:17 GMT, Fei Gao <fgao at openjdk.org> wrote:

> > We can still see the extra register copy. So, I guess it is not caused by this PR and it does exist before?
> 
> If so then might it be better to relocate Andrew's patch to a separate issue? We may want to backport it independent from this change.

And there may be a more powerful way to fix it than my suggestion. I'm thinking of something analgous to `iRegIorL2I` which may be used instead of `regP` as an input to all address-producing patterns.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/16991#issuecomment-2210518364