[PATCH] D127971: [MachinePipeliner] Handle failing constrainRegClass

[Brendon Cahoon via Phabricator via llvm-commits]

bcahoon accepted this revision.
bcahoon added a comment.

Thanks for making this change. It's an interesting case. We handled a related issue, with subregisters, by adding code to preprocessPhiNodes to create copies. I don't have a problem with approach in this patch. There may be other cases in this code that need a similar change? Not sure...


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