[Bug middle-end/35163] [4.1/4.2/4.3 Regression] folding comparison loses cast

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2008-02-12 21:27 -------
Subject: Bug 35163

Author: rguenth
Date: Tue Feb 12 21:26:49 2008
New Revision: 132269

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132269
Log:
2008-02-12  Richard Guenther  <rguenther@suse.de>

        PR middle-end/35163
        * fold-const.c (fold_widened_comparison): Use get_unwidened in
        value-preserving mode.  Disallow final truncation.

        * gcc.c-torture/execute/pr35163.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/execute/pr35163.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35163