[Bug middle-end/55152] MAX_EXPR(a,-a) is really ABS_EXPR(a)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55152

--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Wed Oct  5 07:48:24 2016
New Revision: 240770

URL: https://gcc.gnu.org/viewcvs?rev=240770&root=gcc&view=rev
Log:
2016-10-05  Richard Biener  <rguenther@suse.de>

        PR middle-end/55152
        * match.pd (min(a,-a) -> -abs(a)): New pattern.

        * gcc.dg/pr55152-2.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr55152-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog