https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95425
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2020-06-02
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed, there's a duplicate - the issue is GCC doesn't get that if only
'f' modifies x it can constant propagate the zero initializer. Of course
it's a little tricky to do in VN since you have to iterate where there's no
visible backedge (and obviously you don't want to do that in general).
