[Bug tree-optimization/60098] DSE fails to DSE errno settings

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60098

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Jun  4 11:56:34 2014
New Revision: 211224

URL: http://gcc.gnu.org/viewcvs?rev=211224&root=gcc&view=rev
Log:
2014-06-04  Richard Biener  <rguent...@suse.de>

    PR tree-optimization/60098
    * tree-ssa-dse.c (dse_possible_dead_store_p): Walk until
    we hit a kill.
    (dse_optimize_stmt): Simplify, now that we found a kill
    earlier.

    * gcc.dg/tree-ssa/ssa-dse-15.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-dse-15.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dse.c