r250855 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Aug  3 14:08:15 2017
New Revision: 250855

URL: https://gcc.gnu.org/viewcvs?rev=250855&root=gcc&view=rev
Log:
2017-08-03  Richard Biener  <rguenther@suse.de>

	* tree-ssa-reassoc.c (should_break_up_subtract): Also break
	up if the use is in USE - X.

	* gcc.dg/tree-ssa/reassoc-23.c: Adjust to fool early folding
	and CSE.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/reassoc-23.c
    trunk/gcc/tree-ssa-reassoc.c