[PATCH, rtl] Fix PR84878: Segmentation fault in add_cross_iteration_register_deps

[Peter Bergner]

On 4/4/18 2:23 PM, Richard Biener wrote:
> On April 4, 2018 8:25:25 PM GMT+02:00, Peter Bergner <bergner@vnet.ibm.com> wrote:
>>> Nobody mentioned if this was a regression or not, so I did some testing
>>> and it ICEs on GCC 7 but not on GCC 6.  Is it ok to back port to GCC 7
>>> assuming bootstrap and regtesting are clean?
>
> Sure.

The backport testing showed no regressions, so I committed it to GCC 7.
Thanks!

Peter