https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116352
--- Comment #22 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:1e8bd720b1a618a39e2a41eec05e935c32d295f3 commit r16-473-g1e8bd720b1a618a39e2a41eec05e935c32d295f3 Author: Richard Biener <rguent...@suse.de> Date: Thu May 8 10:56:16 2025 +0200 tree-optimization/116352 - amend previous fix The previous fix restricted external vector builds to defs from the same basic-block. That turns out too restrictive so we have to mitigate the original issue in a different way which is restricting it to the original case where all defs are in the same basic-block. PR tree-optimization/116352 * tree-vect-slp.cc (vect_build_slp_tree_2): When compressing operands from a two-operator node make sure the resulting operation does not mix defs from different basic-blocks.
