Allow the disasm output on xarch to do less work for the common path

src/coreclr/jit/codegeninterface.h

@@ -185,6 +185,8 @@ class CodeGenInterface
     static unsigned instInputSize(instruction ins);
     static unsigned instKMaskBaseSize(instruction ins);
 
+    static bool instHasPseudoName(instruction ins);
+
     bool IsEmbeddedBroadcastEnabled(instruction ins, GenTree* op);
 #endif // TARGET_XARCH
     //-------------------------------------------------------------------------

src/coreclr/jit/emitxarch.cpp

@@ -12559,13 +12559,25 @@ void emitter::emitDispConstant(const instrDesc* id, bool skipComma) const
 {
     instruction ins = id->idIns();
 
-    if ((ins == INS_cmppd) || (ins == INS_cmpps) || (ins == INS_cmpsd) || (ins == INS_cmpss) ||
-        (ins == INS_pclmulqdq) || (ins == INS_vpcmpb) || (ins == INS_vpcmpd) || (ins == INS_vpcmpq) ||
-        (ins == INS_vpcmpw) || (ins == INS_vpcmpub) || (ins == INS_vpcmpud) || (ins == INS_vpcmpuq) ||
-        (ins == INS_vpcmpuw))
+    if (CodeGenInterface::instHasPseudoName(ins))
     {
-        // These instructions have pseudo-names for each possible immediate value
-        return;
+        switch (ins)
+        {
+            case INS_roundpd:
+            case INS_roundps:
+            case INS_roundsd:
+            case INS_roundss:
+            {
+                // These instructions have pseudo-names, but still need to display the immediate
+                break;
+            }
+
+            default:
+            {
+                // These instructions have pseudo-names for each possible immediate value
+                return;
+            }
+        }
     }
 
     CnsVal cnsVal;