Re: [committed] Enable LRA on several ports

[Richard Biener <richard.guenther@gmail.com>]

On Fri, May 19, 2023 at 1:45 PM Maciej W. Rozycki <macro@orcam.me.uk> wrote:
>
> On Tue, 2 May 2023, Jeff Law via Gcc-patches wrote:
>
> > Well, I'd say that my plan would be to deprecate any target that is not
> > converted by the end of this development cycle.  So the change keeps cris from
> > falling into that bucket.
>
>  As I noted in the other thread it is highly unlikely I will make it with
> the VAX target in this release cycle, owing to the catastrophic breakage
> of the exception unwinder, recently discovered, which I consider higher
> priority as a show-stopper for important software such as current GDB.  I
> will appreciate your taking this into consideration.

You might end up with VAX working fine with reload for GCC 14 but
marked as deprecated.  You then have the full next cycle to GCC 15
to improve the code quality with LRA - note that reload is likely removed
early in the development cycle.

>  That written the VAX target does build its target libraries with `-mlra',
> but there are ICE regressions in the test suite and overall code produced
> is brown paperbag quality.  And removing `-mno-lra' before that has been
> sorted will make making LRA match old reload quality much tougher.

You can always compare to GCC 14 then or even work based off the
release branch.

Richard.

>   Maciej