Craig Topper 6053ca004a
[MC][CodeGen] Move FirstStackSlot and VirtualRegFlag from MCRegister to Register. NFC (#128444)
These concepts don't exist for MCRegister.

I think there is a need for virtual registers in MCRegister for NVPTX,
SPIR-V and WebAssembly, but those should not be confused with Register's
virtual register. I will try to make a separate proposal for that with a
real interface.
2025-02-23 19:56:49 -08:00
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