[PATCH] D109858: [GlobalISel][AMDGPU] Add dead code elimination clean up after legalization.

[Amara Emerson via Phabricator via llvm-commits]

aemerson added a comment.

> If we're going to go with this approach, should we clean up legalizeMachineFunction by ripping out all the bottom-up RPO order stuff, and the on-the-fly (presumably expensive) isTriviallyDead calls?

That's worth looking into as a later piece of work. It could plausibly also make things worse if we don't recycle memory that would have otherwise been freed during the legalization process.


Repository:
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https://reviews.llvm.org/D109858