https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116973
--- Comment #7 from GCC 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:0d4b254b20a9193ab261d02f8a063e21816f85e4 commit r15-5168-g0d4b254b20a9193ab261d02f8a063e21816f85e4 Author: Richard Biener <rguent...@suse.de> Date: Tue Nov 12 10:31:30 2024 +0100 tree-optimization/116973 - SLP permute lower heuristic and single-lane SLP When forcing single-lane SLP to emulate non-SLP behavior we need to disable heuristics designed to optimize SLP loads and instead in all cases resort to an interleaving scheme as requested by forcefully doing single-lane SLP. This fixes the remaining fallout for --param vect-force-slp=1 on x86. PR tree-optimization/116973 * tree-vect-slp.cc (vect_lower_load_permutations): Add force_single_lane parameter. Disable heuristic that keeps some load-permutations. (vect_analyze_slp): Pass force_single_lane to vect_lower_load_permutations.
