[Bug tree-optimization/46217] [4.6 Regression] store to volatile is removed

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46217

--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-03 
11:05:43 UTC ---
Author: rguenth
Date: Wed Nov  3 11:05:39 2010
New Revision: 166239

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=166239
Log:
2010-11-03  Richard Guenther  <rguent...@suse.de>

    PR tree-optimization/46217
    * tree-ssa.c (non_rewritable_mem_ref_base): Check if volatile
    flag matches.
    (execute_update_addresses_taken): Likewise.

    * gcc.dg/pr46217.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr46217.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa.c