[Bug tree-optimization/69783] [6 Regression] Loop is not vectorized after r233212

[ysrumyan at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69783

--- Comment #1 from Yuri Rumyantsev <ysrumyan at gmail dot com> ---
Created attachment 37671
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37671&action=edit
test-case to reproduce

It needs to be compiled with -Ofast -funroll-loops on x86-64