[Bug rtl-optimization/70873] [GCC7 Regressio] 20% performance regression at 482.sphinx3 after r235442 with -O2 -m32 on Haswell.

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70873

--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 38375
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38375&action=edit
test-case to reproduce

Must be compiled with -O2 -mavx2 -m32 options.