[Bug tree-optimization/32721] [4.3 Regression] CCP removes volatile qualifiers.

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2007-07-13 15:41 -------
Subject: Bug 32721

Author: rguenth
Date: Fri Jul 13 15:41:02 2007
New Revision: 126624

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=126624
Log:
2007-07-13  Richard Guenther  <[EMAIL PROTECTED]>

        PR tree-optimization/32721
        * tree-ssa-ccp.c (maybe_fold_stmt_indirect): Preserve
        TREE_THIS_VOLATILE on the folded reference.
        * tree-ssa-operands.c (get_expr_operands): Set has_volatile_ops
        if the array reference has TREE_THIS_VOLATILE set.

        * gcc.dg/pr32721.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr32721.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c
    trunk/gcc/tree-ssa-operands.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32721