[Bug tree-optimization/38180] CCP does not propagate through constant initializers

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2009-03-28 12:52 -------
Subject: Bug 38180

Author: rguenth
Date: Sat Mar 28 12:52:13 2009
New Revision: 145184

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145184
Log:
2009-03-28  Richard Guenther  <rguent...@suse.de>

        PR tree-optimization/38180
        * tree-ssa-ccp.c (get_default_value): Simplify.
        (likely_value): Likewise.
        (surely_varying_stmt_p): Properly handle VOP case.
        (ccp_initialize): Likewise.
        (ccp_fold): Handle propagating through *&.
        (fold_const_aggregate_ref): Also handle decls.

        * gcc.dg/tree-ssa/ssa-ccp-24.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-ccp-24.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-ccp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38180