[llvm] [AMDGPU][MC] GFX9 - allow op_sel in v_interp_p2_f16 (PR #150712)

[Shilei Tian via llvm-commits]

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@@ -1944,6 +1928,7 @@ class AMDGPUAsmParser : public MCTargetAsmParser {
 
   void cvtVOP3Interp(MCInst &Inst, const OperandVector &Operands);
   void cvtVINTERP(MCInst &Inst, const OperandVector &Operands);
+  void cvtOpSelHelper(MCInst &Inst, unsigned OpSel);
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shiltian wrote:

It is not clear to me what this helper does. Can you make the function name more clear, and add comment?

https://github.com/llvm/llvm-project/pull/150712