[PATCH] D121914: [AMDGPU] Stop using getMinimalPhysRegClass in LowerFormalArguments

[Joe Nash via Phabricator via llvm-commits]

Joe_Nash added a comment.

As you say, it seems guaranteed to be SGPR or VGPR by the calling convention. They compile to the same thing under optimization right? If so I slightly prefer the llvm_unreachable version because the intent is locally clear.


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  https://reviews.llvm.org/D121914/new/

https://reviews.llvm.org/D121914