[Bug tree-optimization/71357] [7 Regression] [graphite] ICE: verify_ssa failed (error: definition in block follows the use for SSA_NAME) w/ -O2 -floop-nest-optimize

[asolokha at gmx dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71357

--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
gcc-7.0.0-alpha20160703 snapshot ICEs w/ -O1 -floop-nest-optimize only, not w/
-O2 and above.