http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54098

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-07-26 
10:25:21 UTC ---
Author: rguenth
Date: Thu Jul 26 10:25:15 2012
New Revision: 189885

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=189885
Log:
2012-07-26  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/54098
    * tree-vrp.c (vrp_visit_phi_node): Iterate once more if the
    original range was UNDEFINED.

    * gcc.dg/torture/pr54098.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr54098.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c

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