[PATCH] D140161: [SelectionDAG] Give all the target specific subclasses of SelectionDAGISel their own pass ID.

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D140161#3999437 <https://reviews.llvm.org/D140161#3999437>, @nickdesaulniers wrote:

> In D140161#3999433 <https://reviews.llvm.org/D140161#3999433>, @arsenm wrote:
>
>> Not allowing -stop-before/-stop-after the actual isel pass is probably a feature, not a bug. We don't run the verifier between that and finalizeisel. You can see verifier failing MIR at that point which would confuse
>
> Without `-stop-after`, how are folks expected to test SelectionDAG in isolation?

You kind of don't. That's one of the major issues with it. After finalizeisel is the first point where you're consistently guaranteed verifiable mir


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