[llvm] [AMDGPU] Use implicit operand to preserve liveness of COPY (PR #164911)

Matt Arsenault via llvm-commits llvm-commits at lists.llvm.org
Sun Oct 26 21:53:39 PDT 2025

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arsenm wrote:

> LGTM in general. Is there a situation when it can be `implicit undef`?

Yes, it's representable 

https://github.com/llvm/llvm-project/pull/164911

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