r243631 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Dec 14 08:33:12 2016
New Revision: 243631

URL: https://gcc.gnu.org/viewcvs?rev=243631&root=gcc&view=rev
Log:
2016-12-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78788
	* tree-vrp.c (set_value_range): Allow [-INF(OVF), +INF(OVF)].
	(set_and_canonicalize_value_range): Do not drop the above to
	VARYING.

	* gcc.dg/torture/pr78788.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr78788.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c