https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97428
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:429ad0bb0d3dc77e44f95620341da4938d49168e commit r11-3966-g429ad0bb0d3dc77e44f95620341da4938d49168e Author: Richard Biener <rguent...@suse.de> Date: Thu Oct 15 11:55:53 2020 +0200 tree-optimization/97428 - split SLP groups for loop vectorization This enables SLP store group splitting also for loop vectorization. For the existing testcase gcc.dg/vect/vect-complex-5.c this then generates much better code, likewise for the PR97428 testcase. Both of those have a splitting opportunity splitting the group into two equal (vector-sized) halves, still the patch enables quite arbitrary splitting since generally the interleaving scheme results in quite awkward code for even small groups. If any problems surface with this it's easy to restrict the splitting to known-good cases. 2020-10-15 Richard Biener <rguent...@suse.de> PR tree-optimization/97428 * tree-vect-slp.c (vect_analyze_slp_instance): Split store groups also for loop vectorization. * gcc.dg/vect/vect-complex-5.c: Expect to SLP. * gcc.dg/vect/pr97428.c: Likewise.
