[llvm] [X86][MC] Support Enc/Dec for EGPR for promoted SHA instruction (PR #75582)

[Phoebe Wang via llvm-commits]

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@@ -6757,20 +6757,67 @@ let Constraints = "$src1 = $dst", Predicates = [HasSHA] in {
 
   let Uses=[XMM0] in
   defm SHA256RNDS2 : SHAI_binop<0xCB, "sha256rnds2", int_x86_sha256rnds2,
-                                SchedWriteVecIMul.XMM, 1>;
+                                SchedWriteVecIMul.XMM, "", 1>;
 
   defm SHA256MSG1 : SHAI_binop<0xCC, "sha256msg1", int_x86_sha256msg1,
                                SchedWriteVecIMul.XMM>;
   defm SHA256MSG2 : SHAI_binop<0xCD, "sha256msg2", int_x86_sha256msg2,
                                SchedWriteVecIMul.XMM>;
 }
 
+let Constraints = "$src1 = $dst", Predicates = [HasSHA, HasEGPR, In64BitMode]in {
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phoebewang wrote:

space between `In64BitMode]in`

https://github.com/llvm/llvm-project/pull/75582