r193108 - in /branches/gcc-4_7-branch/gcc: Chan...

[law@gcc.gnu.org]

Author: law
Date: Fri Nov  2 20:19:16 2012
New Revision: 193108

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193108
Log:
       PR tree-optimization/54985
        * tree-ssa-threadedge.c (cond_arg_set_in_bb): New function extracted
        from thread_across_edge.
        (thread_across_edge): Use it in all cases where we might thread
        across a back edge.

        * gcc.c-torture/execute/pr54985.c: New test.



Added:
    branches/gcc-4_7-branch/gcc/testsuite/gcc.c-torture/execute/pr54985.c
Modified:
    branches/gcc-4_7-branch/gcc/ChangeLog
    branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_7-branch/gcc/tree-ssa-threadedge.c