[llvm] [AMDGPU] using divergent/uniform information in ISel of zext (PR #174539)

[Matt Arsenault via llvm-commits]

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arsenm wrote:

I can't tell what is going on here with this little context; what is the full -finalize-isel output for the MIR? 

https://github.com/llvm/llvm-project/pull/174539