https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97558
--- Comment #6 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:5b41d673ad96dd2f9a7dec3877d0381320ccadb1 commit r11-4603-g5b41d673ad96dd2f9a7dec3877d0381320ccadb1 Author: Richard Biener <rguent...@suse.de> Date: Mon Nov 2 09:38:09 2020 +0100 tree-optimization/97558 - avoid SLP analyzing irrelevant stmts This avoids analyzing reductions that are not relevant (thus dead) which eventually will lead into crashes because the participating stmts meta is not analyzed. For this to work the patch also properly removes reduction groups that are not uniformly recognized as patterns. 2020-11-02 Richard Biener <rguent...@suse.de> PR tree-optimization/97558 * tree-vect-loop.c (vect_fixup_scalar_cycles_with_patterns): Check for any mismatch in pattern vs. non-pattern and dissolve the group if there is one. * tree-vect-slp.c (vect_analyze_slp_instance): Avoid analyzing not relevant reductions. (vect_analyze_slp): Avoid analyzing not relevant reduction groups. * gcc.dg/vect/pr97558.c: New testcase.
