https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98211
--- Comment #9 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:76c09f2af9d8ab9c760d860626f069d12d86f0a9 commit r11-5901-g76c09f2af9d8ab9c760d860626f069d12d86f0a9 Author: Richard Biener <rguent...@suse.de> Date: Thu Dec 10 11:12:53 2020 +0100 tree-optimization/98211 - fix bogus vectorization of conversion Pattern recog incompletely handles some bool cases but we shouldn't miscompile as a result but not vectorize. Unfortunately vectorizable_assignment lets invalid conversions (that vectorizable_conversion rejects) slip through. The following rectifies that. 2020-12-10 Richard Biener <rguent...@suse.de> PR tree-optimization/98211 * tree-vect-stmts.c (vectorizable_assignment): Disallow invalid conversions to bool vector types. * gcc.dg/pr98211.c: New testcase.