https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81740
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Tue Mar 26 11:12:37 2019 New Revision: 269938 URL: https://gcc.gnu.org/viewcvs?rev=269938&root=gcc&view=rev Log: 2019-03-26 Bin Cheng <bin.ch...@linux.alibaba.com> PR tree-optimization/81740 * tree-vect-data-refs.c (vect_analyze_data_ref_dependence): In case of outer loop vectorization, check for backward dependence at the inner loop if outer loop dependence is reversed. * gcc.dg/vect/pr81740-1.c: New testcase. * gcc.dg/vect/pr81740-2.c: Likewise. Added: trunk/gcc/testsuite/gcc.dg/vect/pr81740-1.c trunk/gcc/testsuite/gcc.dg/vect/pr81740-2.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vect-data-refs.c
