[Bug tree-optimization/22303] CCP does not handle STRING_CSTs

[rguenth at gcc dot gnu dot org]

------- Comment #10 from rguenth at gcc dot gnu dot org  2006-05-16 15:34 -------
Subject: Bug 22303

Author: rguenth
Date: Tue May 16 15:34:12 2006
New Revision: 113826

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=113826
Log:
2006-05-16  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/22303
        * tree-ssa-ccp.c (fold_const_aggregate_ref): Handle reads
        from STRING_CSTs.
        (evaluate_stmt): Fall back to fold_const_aggregate_ref, if
        ccp_fold did not simplify the statement.

        * gcc.dg/tree-ssa/ssa-ccp-13.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-13.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22303