[llvm] [AMDGPU][True16][MC] fix opsel for v_cmpx 16bit inst (PR #135441)

[Joe Nash via llvm-commits]

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@@ -1220,6 +1220,10 @@ void AMDGPUInstPrinter::printPackedModifier(const MCInst *MI,
         (ModIdx != -1) ? MI->getOperand(ModIdx).getImm() : DefaultValue;
   }
 
+  const bool HasDst =
+      (AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::vdst) != -1) ||
+      (AMDGPU::getNamedOperandIdx(Opc, AMDGPU::OpName::sdst) != -1);
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Sisyph wrote:

I agree, I don't think we have the use/def info at this point. LGTM

https://github.com/llvm/llvm-project/pull/135441