https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #10 from ncm at cantrip dot org ---
(In reply to Uroš Bizjak from comment #9)
> (In reply to ncm from comment #8)
> > It seems worth mentioning that the round trip through
> > L1 cache is just a workaround for the optimizer refusing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #9 from Uroš Bizjak ---
(In reply to ncm from comment #8)
> It seems worth mentioning that the round trip through
> L1 cache is just a workaround for the optimizer refusing
> to ever emit two CMOV instructions in a basic block.
>
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #8 from ncm at cantrip dot org ---
It seems worth mentioning that the round trip through
L1 cache is just a workaround for the optimizer refusing
to ever emit two CMOV instructions in a basic block.
Recognizing and replacing the con
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #7 from Richard Biener ---
(In reply to Uroš Bizjak from comment #5)
> (In reply to Richard Biener from comment #4)
> > (In reply to Uroš Bizjak from comment #3)
> > > (In reply to Jakub Jelinek from comment #2)
> > > > The
> > > >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #6 from Richard Biener ---
(In reply to Jakub Jelinek from comment #2)
> The
> setge %sil
> movzbl %sil, %esi
> to
> xorl%esi, %esi
> setge %sil
> transformation is something GCC does too with
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #5 from Uroš Bizjak ---
(In reply to Richard Biener from comment #4)
> (In reply to Uroš Bizjak from comment #3)
> > (In reply to Jakub Jelinek from comment #2)
> > > The
> > > setge %sil
> > > movzbl %sil, %esi
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #4 from Richard Biener ---
(In reply to Uroš Bizjak from comment #3)
> (In reply to Jakub Jelinek from comment #2)
> > The
> > setge %sil
> > movzbl %sil, %esi
> > to
> > xorl%esi, %esi
> > setge
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
--- Comment #3 from Uroš Bizjak ---
(In reply to Jakub Jelinek from comment #2)
> The
> setge %sil
> movzbl %sil, %esi
> to
> xorl%esi, %esi
> setge %sil
This is quite important conversion, as the later a
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
Jakub Jelinek changed:
What|Removed |Added
CC||jakub at gcc dot gnu.org,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94037
Richard Biener changed:
What|Removed |Added
Keywords||missed-optimization
Target|
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