https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116982
--- Comment #4 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:9b86efd5210101954bd187c3aa8bb909610a5746 commit r15-4107-g9b86efd5210101954bd187c3aa8bb909610a5746 Author: Richard Biener <rguent...@suse.de> Date: Mon Oct 7 11:05:17 2024 +0200 tree-optimization/116982 - analyze scalar loop exit early The following makes sure to discover the scalar loop IV exit during analysis as failure to do so (if DCE and friends are disabled this can happen due to if-conversion doing DCE and FRE on the if-converted loop) would ICE later. I refrained from larger refactoring to be able to eventually backport. PR tree-optimization/116982 * tree-vectorizer.h (vect_analyze_loop): Pass in .LOOP_VECTORIZED call. (vect_analyze_loop_form): Likewise. * tree-vect-loop.cc (vect_analyze_loop_form): Reject loops where we cannot determine a IV exit for the scalar loop. (vect_analyze_loop): Adjust. * tree-vectorizer.cc (try_vectorize_loop_1): Likewise. * tree-parloops.cc (gather_scalar_reductions): Likewise.
