[Bug tree-optimization/77445] [7 Regression] Performance drop after r239219 on coremark test

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77445

--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 39535
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39535&action=edit
test-case to reproduce

It is sufficient to compile it with -Ofast option.