r249053 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Jun  9 09:40:45 2017
New Revision: 249053

URL: https://gcc.gnu.org/viewcvs?rev=249053&root=gcc&view=rev
Log:
2017-06-09  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/66623
	* tree-vect-loop.c (vect_is_simple_reduction): Cleanup,
	refactor check_reduction into two parts, properly computing
	whether we have to check reduction validity for outer loop
	vectorization.

	* gcc.dg/vect/pr66623.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr66623.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop.c