[llvm] [X86] Support promoted ENQCMD, KEYLOCKER and USER-MSR instructions (PR #77293)

[Shengchen Kan via llvm-commits]

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@@ -1534,7 +1534,7 @@ let SchedRW = [WriteStore], Defs = [EFLAGS] in {
   def ENQCMD64 : I<0xF8, MRMSrcMem, (outs), (ins GR64:$dst, i512mem_GR64:$src),
                  "enqcmd\t{$src, $dst|$dst, $src}",
                  [(set EFLAGS, (X86enqcmd GR64:$dst, addr:$src))]>,
-                 T8, XD, AdSize64, Requires<[HasENQCMD, In64BitMode]>;
+                 T8, XD, AdSize64, Requires<[HasENQCMD, NoEGPR, In64BitMode]>;
 
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KanRobert wrote:

Rewrite it with `ITy` first

https://github.com/llvm/llvm-project/pull/77293