https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126862
--- Comment #2 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <[email protected]>: https://gcc.gnu.org/g:2026474385dc23e9896577db08d963bc3a96f256 commit r17-3285-g2026474385dc23e9896577db08d963bc3a96f256 Author: Richard Biener <[email protected]> Date: Fri Aug 14 11:14:00 2026 +0200 tree-optimization/126862 - fix live lane extract dominance check for PHIs We were not correctly verifying dominance of the vector definition with the scalar use in case of PHI use stmts. We have to ensure the respective PHI edge source can reach the definition. PR tree-optimization/126862 * tree-vect-slp.cc (vect_bb_slp_mark_live_stmts): For PHI uses verify dominance to the PHI use edge source. * gcc.dg/vect/bb-slp-pr126862.c: New testcase.
