[Bug rtl-optimization/57518] [4.8/4.9 Regression] Redundant insn generated in LRA

[wmi at google dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57518

--- Comment #1 from wmi at google dot com ---
post a candidate patch here:

http://gcc.gnu.org/ml/gcc-patches/2013-06/msg00748.html