https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68961
--- Comment #13 from Richard Biener <rguenth at gcc dot 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 <rguent...@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