[Bug tree-optimization/68953] [6 Regression] [graphite] Wrong code w/ -O[12] -floop-nest-optimize

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68953

--- Comment #10 from vries at gcc dot gnu.org ---
asked follow-up question (
https://gcc.gnu.org/ml/gcc-patches/2016-04/msg00444.html ), waiting for answer
before marking fixed-resolved.