[Bug tree-optimization/68823] [6/7 Regression][graphite] tramp3d-v4 compiled with -floop-nest-optimize crashes

[spop at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68823

--- Comment #4 from Sebastian Pop <spop at gcc dot gnu.org> ---
The data dependence relations are dumped in the output of
-fdump-tree-graphite-all.
graphite-dependences.c contains the code for the data dependence computations.
Looking at the gimple code it seems like a trivial write after write
dependence.

Do we have a reduced testcase for this problem?