[Bug middle-end/60546] [4.8/4.9] O2 & asan enable generates wrong insns

[manjian2006 at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60546

--- Comment #8 from linzj <manjian2006 at gmail dot com> ---
I don't think it can be mark as resolved-invalid that fast.This code is used by
WebKit for a long time and no one would say this is an illegal algorithm.