[llvm] [MIR] Serialize virtual register flags (PR #110228)

[Akshat Oke via llvm-commits]

================
@@ -47,6 +47,7 @@ struct VRegInfo {
   } D;
   Register VReg;
   Register PreferredReg;
+  std::vector<::uint8_t> Flags;
----------------
Akshat-Oke wrote:

There's a struct named `uint8_t` defined in this class.
I believe the author meant `enum : uint8_t` instead.

https://github.com/llvm/llvm-project/pull/110228