https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86991
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Tue Nov 13 16:14:37 2018 New Revision: 266081 URL: https://gcc.gnu.org/viewcvs?rev=266081&root=gcc&view=rev Log: 2018-11-13 Richard Biener <rguent...@suse.de> PR tree-optimization/86991 * tree-vect-loop.c (vect_is_slp_reduction): Delay reduction group building until we have successfully detected the SLP reduction. (vect_is_simple_reduction): Remove fixup code here. * gcc.dg/pr86991.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/pr86991.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vect-loop.c