r266955 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Mon Dec 10 13:56:51 2018
New Revision: 266955

URL: https://gcc.gnu.org/viewcvs?rev=266955&root=gcc&view=rev
Log:
2018-12-10  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88427
	* vr-values.c (vr_values::extract_range_from_phi_node):
	Handle symbolic ranges conservatively when trying to drop
	to Inf +- 1.

	* gcc.dg/pr88427.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr88427.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/vr-values.c