[llvm] [AMDGPU] Add MachineVerifer check to detect illegal copies from VGPR to SGPR (PR #105494)

[Jay Foad via llvm-commits]

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@@ -4613,15 +4613,41 @@ static bool isSubRegOf(const SIRegisterInfo &TRI,
          SubReg.getReg() == SuperVec.getReg();
 }
 
+// Verify the illgal copy from VGPR to SGPR for generic opcode COPY
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jayfoad wrote:

Typo "illegal"

https://github.com/llvm/llvm-project/pull/105494