[Bug middle-end/31530] Incorrect folding of multiplication and sign change when followed by an addition

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2007-04-11 12:14 -------
Subject: Bug 31530

Author: rguenth
Date: Wed Apr 11 12:13:54 2007
New Revision: 123715

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123715
Log:
2007-04-11  Richard Guenther  <rguenther@suse.de>

        PR middle-end/31530
        * simplify-rtx.c (simplify_binary_operation_1): Do not simplify
        a * -b + c as c - a * b if we honor sign dependent rounding.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31530