https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107715
--- Comment #3 from Alexander Monakov ---
There's a forward dependency over 'c' (read of c[i] vs. write of c[i+1] with
'i' iterating forward), and the vectorized variant takes the hit on each
iteration. How is a slowdown even surprising.
For th
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107715
--- Comment #2 from Jan Hubicka ---
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107715
>
> --- Comment #1 from Richard Biener ---
> Because store data races are allowed with -Ofast masked stores are not used so
> we instead get
>
> vect_
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107715
--- Comment #1 from Richard Biener ---
Because store data races are allowed with -Ofast masked stores are not used so
we instead get
vect__ifc__80.24_114 = VEC_COND_EXPR ;
_ifc__80 = _58 ? _45 : _ifc__78;
MEM [(double *)vectp_c.25_116] =
