[Bug tree-optimization/62217] [4.9/5 Regression] DOM confuses complete unrolling which in turn causes VRP to warn

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62217

--- Comment #15 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Feb 18 09:48:57 2015
New Revision: 220785

URL: https://gcc.gnu.org/viewcvs?rev=220785&root=gcc&view=rev
Log:
2015-02-18  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/62217
    * tree-ssa-dom.c (cprop_operand): Avoid propagating copies
    into BIVs.

    * gcc.dg/tree-ssa/cunroll-11.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/cunroll-11.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dom.c