https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98674
--- Comment #7 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:2182274f510c180ea92a4f826a0f6cf5f1f55b66 commit r11-6670-g2182274f510c180ea92a4f826a0f6cf5f1f55b66 Author: Richard Biener <rguent...@suse.de> Date: Thu Jan 14 14:08:41 2021 +0100 tree-optimization/98674 - improve dependence analysis This improves dependence analysis on refs that access the same array but with different typed but same sized accesses. That's obviously safe for the case of types that cannot have any access function based off them. For the testcase this is signed short vs. unsigned short. 2021-01-14 Richard Biener <rguent...@suse.de> PR tree-optimization/98674 * tree-data-ref.c (base_supports_access_fn_components_p): New. (initialize_data_dependence_relation): For two bases without possible access fns resort to type size equality when determining shape compatibility. * gcc.dg/vect/pr98674.c: New testcase.
