[PATCH] D83884: GlobalISel: Make type for lower action more consistently optional

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D83884#2154181 <https://reviews.llvm.org/D83884#2154181>, @paquette wrote:

> Is it possible to write a testcase for this?


This doesn’t change anything on its own. All of the existing lower implementations have tests already. I’m working on a follow on patch beyond D73051 <https://reviews.llvm.org/D73051> which will use this to pass a different type in


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