r238238 - in /trunk/gcc: ChangeLog fwprop.c tes...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Tue Jul 12 08:56:14 2016
New Revision: 238238

URL: https://gcc.gnu.org/viewcvs?rev=238238&root=gcc&view=rev
Log:
2016-07-12  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/68961
	* fwprop.c (propagate_rtx): Allow SUBREGs of VEC_CONCAT and CONCAT
	to simplify to a non-constant.

	* gcc.target/i386/pr68961.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr68961.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fwprop.c
    trunk/gcc/testsuite/ChangeLog