[PATCH] Fix PR rtl-optimization/21041 (yet another reload problem)
Ulrich Weigand
uweigand@de.ibm.com
Sun Dec 18 16:11:00 GMT 2005
Roger Sayle wrote:
> This is OK for mainline, 4.1 and 4.0. The patch looks reasonable,
> and I'll defer to your reload expertise that this is the correct
> fix. Is there any chance we'll generate worse code with this patch
> or fail to find reloads on some !STRICT_ALIGNMENT targets?
Well, in those cases where we need to make the replacement (eliminable
registers), the result should be a properly aligned stack slot, so we
should be fine. In other cases where we cannot prove proper alignment,
I guess the old behaviour would have been a latent bug anyway ...
> It might
> make sense to apply this patch to mainline, wait a few days and if
> nothing bad happens backport to 4.0 and 4.1 once we're confident
> its safe.
OK, I've applied the patch to mainline now, and will wait until the
end of the week before backporting.
Thanks,
Ulrich
--
Dr. Ulrich Weigand
Linux on zSeries Development
Ulrich.Weigand@de.ibm.com
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