[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 #8 from Sebastian Pop <spop at gcc dot gnu.org> ---
The code in fault is called from pdr_add_memory_accesses()
Maybe the problem is in parsing the gimple MEM[] into a data reference.