https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98137
--- Comment #3 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:7b4ea2827d2003c8ffc76cd478f8974360cbd78f commit r11-5809-g7b4ea2827d2003c8ffc76cd478f8974360cbd78f Author: Richard Biener <rguent...@suse.de> Date: Fri Dec 4 11:13:48 2020 +0100 tree-optimization/98137 - enhance split_constant_offset range handling split_constant_offset currently gives up looking at ranges when dealing with possibly wrapping operations for looking through conversions when the downstream analysis does not yield a SSA name. That's overly conservative and we have a nice helper that can deal with arbitrary expresssions. Use that. This helps data reference group analysis so the testcase is fully SLP vectorized, making use of the whole-function "BB" vectorization capabilities we now have. 2020-12-04 Richard Biener <rguent...@suse.de> PR tree-optimization/98137 * tree-data-ref.c (split_constant_offset_1): Use determine_value_range instead of get_range_info to handle arbitrary expressions. * gcc.dg/vect/bb-slp-pr98137.c: New testcase.