[Bug tree-optimization/34099] [4.3 Regression] optimizer problem

[rguenth at gcc dot gnu dot org]

------- Comment #16 from rguenth at gcc dot gnu dot org  2007-11-19 12:52 -------
Subject: Bug 34099

Author: rguenth
Date: Mon Nov 19 12:52:09 2007
New Revision: 130289

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130289
Log:
2007-11-19  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/34099
        * tree-ssa-ccp.c (likely_value): Exclude all but PLUS_EXPR,
        MINUS_EXPR and POINTER_PLUS_EXPR from handling as UNDEFINED
        if only one operand is undefined.

        * gcc.c-torture/execute/pr34099-2.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr34099-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-ssa-ccp.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34099