[Bug tree-optimization/57858] AVX2: ymm used for div, not for sqrt

[vincenzo.innocente at cern dot ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57858

--- Comment #5 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
I remember something similar in the past
--param max-completely-peel-times=1 
sort of fix it…  (why pre does not recognize that 1/(1+0) == 1  btw??

of course it is just a benchmark (and I can modify it to avoid the loop
peeling),
still