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

[Shengchen Kan via llvm-commits]

================
@@ -14,61 +14,75 @@
 
 //===----------------------------------------------------------------------===//
 // Key Locker instructions
+class Encodekey<bits<8> opcode, string m>
+  : I<opcode, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src), m#"\t{$src, $dst|$dst, $src}", []>,
+    NoCD8, XS;
 
-let SchedRW = [WriteSystem], Predicates = [HasKL] in {
-  let Uses = [XMM0, EAX], Defs = [EFLAGS] in {
+multiclass Aesencdec<string suffix> {
+ def AESENC128KL#suffix : I<0xDC, MRMSrcMem, (outs VR128:$dst),
+                            (ins VR128:$src1, opaquemem:$src2),
+                            "aesenc128kl\t{$src2, $src1|$src1, $src2}",
+                            [(set VR128:$dst, EFLAGS, (X86aesenc128kl VR128:$src1, addr:$src2))]>,
+                          NoCD8, XS;
+ def AESDEC128KL#suffix : I<0xDD, MRMSrcMem, (outs VR128:$dst),
+                            (ins VR128:$src1, opaquemem:$src2),
+                            "aesdec128kl\t{$src2, $src1|$src1, $src2}",
+                            [(set VR128:$dst, EFLAGS, (X86aesdec128kl VR128:$src1, addr:$src2))]>,
+                          NoCD8, XS;
+ def AESENC256KL#suffix : I<0xDE, MRMSrcMem, (outs VR128:$dst),
+                            (ins VR128:$src1, opaquemem:$src2),
+                            "aesenc256kl\t{$src2, $src1|$src1, $src2}",
+                            [(set VR128:$dst, EFLAGS, (X86aesenc256kl VR128:$src1, addr:$src2))]>,
+                          NoCD8, XS;
+ def AESDEC256KL#suffix : I<0xDF, MRMSrcMem, (outs VR128:$dst),
+                            (ins VR128:$src1, opaquemem:$src2),
+                            "aesdec256kl\t{$src2, $src1|$src1, $src2}",
+                            [(set VR128:$dst, EFLAGS, (X86aesdec256kl VR128:$src1, addr:$src2))]>,
+                          NoCD8, XS;
+}
+
+let SchedRW = [WriteSystem] in {
+  let Uses = [XMM0, EAX], Defs = [EFLAGS], Predicates = [HasKL] in {
     def LOADIWKEY : I<0xDC, MRMSrcReg, (outs), (ins VR128:$src1, VR128:$src2),
                       "loadiwkey\t{$src2, $src1|$src1, $src2}",
                       [(int_x86_loadiwkey XMM0, VR128:$src1, VR128:$src2, EAX)]>, T8, XS;
   }
 
-  let Uses = [XMM0], Defs = [XMM0, XMM1, XMM2, XMM4, XMM5, XMM6, EFLAGS] in {
-    def ENCODEKEY128 : I<0xFA, MRMSrcReg, (outs GR32:$dst), (ins GR32:$src),
-                         "encodekey128\t{$src, $dst|$dst, $src}", []>, T8, XS;
-  }
+  let Predicates = [HasKL, NoEGPR] in {
+    let Uses = [XMM0], Defs = [XMM0, XMM1, XMM2, XMM4, XMM5, XMM6, EFLAGS] in
+      def ENCODEKEY128 : Encodekey<0xFA, "encodekey128">, T8;
----------------
KanRobert wrote:

Drop NoEGPR

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