[Bug middle-end/57809] Wasted work in omega_eliminate_red()

[pchang9 at cs dot wisc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57809

--- Comment #7 from Po-Chun Chang <pchang9 at cs dot wisc.edu> ---
Patch sent to gcc-patch@

http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00800.html