https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101756
--- 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:87a0b607e40f8122c7fc45d496ef48799fe11550 commit r12-2727-g87a0b607e40f8122c7fc45d496ef48799fe11550 Author: Richard Biener <rguent...@suse.de> Date: Wed Aug 4 11:42:41 2021 +0200 tree-optimization/101756 - avoid vectorizing boolean MAX reductions The following avoids vectorizing MIN/MAX reductions on bools which, when ending up as vector(2) <signed-boolean:64> would need to be adjusted because of the sign change. The fix instead avoids any reduction vectorization where the result isn't compatible to the original scalar type since we don't compensate for that either. 2021-08-04 Richard Biener <rguent...@suse.de> PR tree-optimization/101756 * tree-vect-slp.c (vectorizable_bb_reduc_epilogue): Make sure the result of the reduction epilogue is compatible to the original scalar result. * gcc.dg/vect/bb-slp-pr101756.c: New testcase.
