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

[bic60176 at gmail dot com]

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

--- Comment #5 from Bi6c <bic60176 at gmail dot com> ---
The discrepancy also appeared when compiling with optimization level -Os