[Bug middle-end/49465] [4.7 Regression] Revision 175114 miscompiled 403.gcc in SPEC CPU 2006

[law at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49465

--- Comment #6 from Jeffrey A. Law <law at gcc dot gnu.org> 2011-06-23 20:26:10 
UTC ---
Author: law
Date: Thu Jun 23 20:26:07 2011
New Revision: 175351

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175351
Log:

    PR middle-end/49465
    * tree-ssa-threadupate.c (fix_duplicate_block_edges): Fix condition
    to detect threading through joiner block.  If there was already
    an edge to the new target, then do not change the PHI nodes.

*************** fix_duplicate_block_edges (struct redire

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