https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88567
--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- Author: rsandifo Date: Mon Jan 7 16:00:52 2019 New Revision: 267652 URL: https://gcc.gnu.org/viewcvs?rev=267652&root=gcc&view=rev Log: Fix ICE in get_initial_defs_for_reduction (PR 88567) The use of "j" in: init = permute_results[number_of_vectors - j - 1]; was out-of-sync with the new flat loop structure. Now that all that reversing is gone, we can just use the result of duplicate_and_interleave directly. The other cases shouldn't be affected by postponing the insertion of ctor_seq, since gimple_build* appends to the seq without clearing it first (unlike some of the gimplify routines). The ICE is already covered by gcc.dg/vect/pr63379.c. 2019-01-07 Richard Sandiford <richard.sandif...@arm.com> gcc/ PR middle-end/88567 * tree-vect-loop.c (get_initial_defs_for_reduction): Pass the output vector directly to duplicate_and_interleave instead of going through a temporary. Postpone insertion of ctor_seq to the end of the loop. Modified: trunk/gcc/ChangeLog trunk/gcc/tree-vect-loop.c
