https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88223
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Wed Nov 28 13:51:42 2018 New Revision: 266560 URL: https://gcc.gnu.org/viewcvs?rev=266560&root=gcc&view=rev Log: 2018-11-28 Richard Biener <rguent...@suse.de> PR tree-optimization/88223 * tree-ssa-sccvn.c (vn_reference_lookup_3): When skipping over a stored-same value may-alias store make sure to consider partial overlaps which are valid when TBAA reasonings do not apply and byte-granular overlaps are possible at all. * gcc.dg/torture/pr88223.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/torture/pr88223.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-sccvn.c
