https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116083
--- Comment #5 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:27b444a41a6afab8020183c4c5d3361e21635031 commit r15-5918-g27b444a41a6afab8020183c4c5d3361e21635031 Author: Richard Biener <rguent...@suse.de> Date: Tue Dec 3 14:37:21 2024 +0100 tree-optimization/116083 - SLP discovery slowness One large constant factor of SLP discovery is figuring the vector type for each individual lane of each node. That should be redundant since the structual comparison of stmts should ensure they end up the same so the following computes them only once per node rather than for each lane. This cuts the compile-time of the testcase in half. PR tree-optimization/116083 * tree-vect-slp.cc (vect_build_slp_tree_1): Compute vector type and max_nunits only once. Remove check for matching vector type of each lane and replace it with matching check for LHS type.
