[Bug tree-optimization/60902] [4.9 Regression] ffmpeg built with gcc 4.9 RC produces incorrect flac playback code

[law at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60902

--- Comment #34 from Jeffrey A. Law <law at gcc dot gnu.org> ---
Author: law
Date: Mon Apr 28 13:38:19 2014
New Revision: 209860

URL: http://gcc.gnu.org/viewcvs?rev=209860&root=gcc&view=rev
Log:
    PR tree-optimization/60902
    * tree-ssa-threadedge.c
    (record_temporary_equivalences_from_stmts_at_dest): Only iterate
    over real defs when invalidating outputs from statements that do not
    produce useful outputs for threading.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-threadedge.c