r192745 - in /trunk/gcc: ChangeLog testsuite/Ch...

[law@gcc.gnu.org]

Author: law
Date: Tue Oct 23 20:33:49 2012
New Revision: 192745

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192745
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:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr54985.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-threadedge.c