[llvm] [X86][MC] Support encoding/decoding for JMPABS (PR #72835)

[Shengchen Kan via llvm-commits]

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@@ -1305,6 +1305,8 @@ PrefixKind X86MCCodeEmitter::emitREXPrefix(int MemOperand, const MCInst &MI,
       }
     }
   }
+  if (TSFlags & X86II::ExplicitREX2Prefix)
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KanRobert wrote:

Done

https://github.com/llvm/llvm-project/pull/72835