[llvm] [AMDGPU] Update VOP instructions for GFX12 (PR #74853)

[Joe Nash via llvm-commits]

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@@ -505,6 +505,11 @@ struct CanBeVOPD {
   bool Y;
 };
 
+/// \returns SIEncodingFamily used for VOPD encoding on a \p ST. This is a
+/// helper to check if a VOPD opcode is supported by the \p ST.
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Sisyph wrote:

It is true given the use of this function, but is not true when considering this function in isolation. I have no opinion on the presence of the sentence.

https://github.com/llvm/llvm-project/pull/74853