https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101668
--- 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:08afab6f8642f58f702010ec196dce3b00955627 commit r13-926-g08afab6f8642f58f702010ec196dce3b00955627 Author: Richard Biener <rguent...@suse.de> Date: Tue May 31 09:37:05 2022 +0200 tree-optimization/101668 - relax SLP of existing vectors This relaxes the conditions on SLPing extracts from existing vectors leveraging the relaxed VEC_PERM conditions on the input vs output vector type compatibility. It also handles lowpart extracts and concats without VEC_PERMs now. 2022-05-25 Richard Biener <rguent...@suse.de> PR tree-optimization/101668 * tree-vect-slp.cc (vect_build_slp_tree_1): Allow BIT_FIELD_REFs for vector types with compatible lane types. (vect_build_slp_tree_2): Deal with this. (vect_add_slp_permutation): Adjust. Emit lowpart/concat special cases without VEC_PERM. (vectorizable_slp_permutation): Select the operand vector type and relax requirements. Handle identity permutes with mismatching operand types. * optabs-query.cc (can_vec_perm_const_p): Only allow variable permutes for op_mode == mode. * gcc.target/i386/pr101668.c: New testcase. * gcc.dg/vect/bb-slp-pr101668.c: Likewise.
