[PATCH] SDAG: Update ChainNodesMatched during UpdateChains if a node is replaced

[Justin Bogner via llvm-commits]

"Ulrich Weigand" <Ulrich.Weigand at de.ibm.com> writes:
> Justin Bogner <justin at justinbogner.com> wrote on 28.01.2017 01:38:23:
>
>> Fix for llvm.org/PR31710. I'm not sure I love the test case (it's just a
>> crash test) but I couldn't come up with anything more specific.
>
> Yes, this is really hard to trigger, I had a hard time coming up with
> any better test case as well ...
>
>> Does this look good to commit?
>
> LGTM.

r293522