[Bug rtl-optimization/65651] Redundant cmp with zero instruction in loop for x86 target.

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65651

--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 35202
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35202&action=edit
test-case to reproduce

Need to compile with -O2 flag only.