[Bug tree-optimization/78348] [7 REGRESSION] 15% performance drop for coremark-pro/nnet-test after r242038

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78348

--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 40036
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40036&action=edit
test-case to reproduce

Must be compiled with -O3 option to reproduce.