[PATCH] D117796: AMDGPU: Fix LiveVariables error after lowering SI_END_CF

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D117796#3274452 <https://reviews.llvm.org/D117796#3274452>, @ruiling wrote:

> I would hope we can move the block split logic into a separate pass that can be scheduled before we constructing liveness information, like during addPreRegAlloc(). It is expensive to update either LiveVariables or LiveIntervals. Sounds good?

The whole reason this pass is here is because it needs to be done after phi elimination, so you can't really move it anywhere else. LiveVariables we should also just be pushing to eliminate entirely


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