[Bug middle-end/68664] [6/7 Regression] Speculative sqrt in c-ray main loop causes large slow down

[aldyh at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68664

--- Comment #8 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
FYI, on aarch64, the problem can be reproduced with:

./cc1 -quiet -I./ a.c -O3 -ffast-math -mcpu=cortex-a53

on ppc64 with:

./cc1 -quiet -I./ a.c -O3 -ffast-math