[Bug middle-end/68528] Wrong constant folding

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68528

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Nov 25 14:21:25 2015
New Revision: 230870

URL: https://gcc.gnu.org/viewcvs?rev=230870&root=gcc&view=rev
Log:
2015-11-25  Richard Biener  <rguent...@suse.de>

        PR middle-end/68528
        * fold-const.c (fold_binary_loc): Do not call negate_expr_p
        on stripped operands.

        * gcc.dg/torture/pr68528.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr68528.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/testsuite/ChangeLog