https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118205
--- Comment #2 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #1)
> floop-parallelize does not use graphite.
In my defence...
```
$ gcc /tmp/a.c -O -floop-parallelize-all -ftree-parallelize-loops=2
/tmp/a.c: sorry, unimplemented: Graphite loop optimizations cannot be used (isl
is not available) ('-fgraphite', '-fgraphite-identity', '-floop-nest-optimize',
'-floop-parallelize-all')
```
