[Bug tree-optimization/115766] [12/13/14 Regression] wrong code at optimization levels -O2, -O3

[bic60176 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115766

--- Comment #3 from Bi6c <bic60176 at gmail dot com> ---
Created attachment 58664
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58664&action=edit
reduced testcase

I reduced the testcase and removed the csmith dependency.