[PATCH] [Polly] Runtime alias checks

[Tobias Grosser]

On 17/09/2014 09:34, Johannes Doerfert wrote:
> The necessary isl patches are in, lets move this along too, shall we?

Fine with me. To do so, these steps are necessary:

1) Update isl to 2c19ecd444095d6f560349018f68993bc0e03691

In a single commit with the run-time checks as otherwise we get warnings 
about unlisted enum values.

2) Check that Polly tests pass with the latest isl version

3) Disable the run-time alias checks in case the cloog backend is used,
    but enable it in case the isl backend is used.

The last point should make sure that the CLooG tester keep working, 
while the isl testers already test our code.

Cheers,
Tobias