[Bug tree-optimization/71423] [5/6/7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71423

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jun  7 07:30:47 2016
New Revision: 237166

URL: https://gcc.gnu.org/viewcvs?rev=237166&root=gcc&view=rev
Log:
2016-06-07  Richard Biener  <rguent...@suse.de>

        PR middle-end/71423
        * match.pd ((X | ~Y) -> Y <= X): Properly invert the comparison
        for signed ops.

        * gcc.dg/torture/pr71423.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr71423.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog