[Bug tree-optimization/69110] execution failure in gcc.c-torture/execute/doloop-2.c with -ftree-parallelize-loops=2

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69110

--- Comment #9 from vries at gcc dot gnu.org ---
With -floop-parallelize-all --param graphite-min-loops-per-function=1 we have
in graphite:
...
Creating dr for i
analyze_innermost: success.
        base_address: &i
        offset from base address: 0
        constant offset from base address: 0
        step: 0
        aligned to: 128
        base_object: i
[scop-detection-fail] Graphite cannot handle data-refs in stmt:
# VUSE <.MEM_11>
i.1_4 = i;
...

and in parloops:
...
loop is not parallel according to graphite
...