[Bug tree-optimization/66263] [4.8/4.9/5/6 Regression] Performance regression from gcc-4.8 and up (trivial sudoku program)

[bdeyal at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66263

--- Comment #4 from EyalBD <bdeyal at gmail dot com> ---
Same results for -fwhole-program too.  gcc-4.6,4.7 around 0.5s, others 0.7-0.8s