https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109866
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|rtl-optimization |tree-optimization
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
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 ...
