https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94798
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
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Depends on| |3507
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #4)
> As for the subtraction followed by comparison, I think this is something
> normally optimized through peephole2, but that one doesn't trigger in this
> case due to RA decisions, where it sees different operands:
This is basically PR 3507.
Referenced Bugs:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3507
[Bug 3507] appalling optimisation with sub/cmp on multiple targets
