https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101801
--- Comment #5 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:f31da42e047e8018ca6ad9809273bc7efb6ffcaf commit r12-2789-gf31da42e047e8018ca6ad9809273bc7efb6ffcaf Author: Richard Biener <rguent...@suse.de> Date: Fri Aug 6 14:39:05 2021 +0200 tree-optimization/101801 - remove vect_worthwhile_without_simd_p This removes the cost part of vect_worthwhile_without_simd_p, retaining only the correctness bits. The reason is that the cost heuristic do not properly account for SLP plus the check whether "without simd" applies misfires for AVX512 mask vectors at the moment, leading to missed vectorizations there. Any costing decision should take place in the cost modeling, no single stmt is to disable all vectorization on its own. 2021-08-06 Richard Biener <rguent...@suse.de> PR tree-optimization/101801 * tree-vectorizer.h (vect_worthwhile_without_simd_p): Rename... (vect_can_vectorize_without_simd_p): ... to this. * tree-vect-loop.c (vect_worthwhile_without_simd_p): Rename... (vect_can_vectorize_without_simd_p): ... to this and fold in vect_min_worthwhile_factor. (vect_min_worthwhile_factor): Remove. (vectorizable_reduction): Adjust and remove the cost part. * tree-vect-stmts.c (vectorizable_shift): Likewise. (vectorizable_operation): Likewise.
