[PATCH] D128539: [GISel] Don't fold convergent instruction across CFG

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D128539#3616207 <https://reviews.llvm.org/D128539#3616207>, @qcolombet wrote:

>> I'm not sure what context this gets called in. Maybe it's possible to hit this for DPP instructions?
>
> This is called during instruction selection from the patterns that have been generated from SDISel.
> Essentially, if you have a Pat that takes two or more instructions and fold them.
>
> Thanks for the pointer, I'll take a look.

I looked and don't see anything for this. We fold all of these in separate MI passes


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