[Bug tree-optimization/50472] Volatile qualification in data is not enough to avoid optimization over pointer to data

[amker at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50472

--- Comment #8 from amker at gcc dot gnu.org 2012-06-12 02:33:29 UTC ---
Author: amker
Date: Tue Jun 12 02:33:23 2012
New Revision: 188414

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=188414
Log:
    Backport r179200 from GCC-4.6 branch
    2011-09-26  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/50472
    * tree-ssa-ccp.c (fold_const_aggregate_ref): Do not fold
    volatile references.

    PR tree-optimization/50472
    * gcc.dg/torture/pr50472.c: New testcase.

Added:
    branches/ARM/embedded-4_6-branch/gcc/testsuite/gcc.dg/torture/pr50472.c
Modified:
    branches/ARM/embedded-4_6-branch/gcc/ChangeLog.arm
    branches/ARM/embedded-4_6-branch/gcc/testsuite/ChangeLog.arm
    branches/ARM/embedded-4_6-branch/gcc/tree-ssa-ccp.c