https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109866
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
Last reconfirmed| |2023-05-17
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #4)
> So I think forwprop could/should do this.
> Right now it requires c to be single use but we should detect that somehow
> a-b use is reverse dominated by the first use of c. Anyways this might
> require a rewrite of parts of forwprop ...
I think we could relax the single-use restriction to allow multiple uses
in comparisons. Though I hoped to eventually get rid of the non-match.pd
comparison forwarding in the pass ...
