[Bug tree-optimization/63602] Wrong code w/ -O2 -ftree-loop-linear

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63602

--- Comment #1 from Arseny Solokha <asolokha at gmx dot com> ---
It seems I've reduced the snippet too hard. However, are global variables
declared static or not, it doesn't change anything.