[Bug tree-optimization/77824] unreachable code in SLSR GIMPLE pass

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77824

--- Comment #2 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Ah, the passes have moved around some since I last looked at this.  This used
to follow a dom pass, so the code for copies didn't kick in any more at that
point.  So it's understandable that the copy propagation part is now important
again.