[PATCH] D69206: [AMDGPU] Select AGPR in PHI operand legalization

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In D69206#1715469 <https://reviews.llvm.org/D69206#1715469>, @rampitec wrote:

> In D69206#1715466 <https://reviews.llvm.org/D69206#1715466>, @arsenm wrote:
>
> > Testcase?
>
>
> Probably I can forge a mir which should not have vgpr inputs for agpr result. So far I cannot figure out why a .mir dumped with -stop-before does not run the next pass (si-fix-sgpr-copies).


An IR testcase would also be useful for the copy behavior, it will be useful for RegBankSelect with AGPR eventually


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