[llvm] [TII][NFC] Add renamable bit to copyPhysReg (PR #91179)

[Piyou Chen via llvm-commits]

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@@ -995,8 +995,9 @@ class TargetInstrInfo : public MCInstrInfo {
   /// large registers. See for example the ARM target.
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BeMg wrote:

Thanks for the reminder. Documented.

https://github.com/llvm/llvm-project/pull/91179