Refactoring and optimization on CPU translation (#661)

* Refactoring and optimization on CPU translation

* Remove now unused property

* Rename ilBlock -> block (local)

* Change equality comparison on RegisterMask for consistency

Co-Authored-By: gdkchan <gab.dark.100@gmail.com>

* Add back the aggressive inlining attribute to the Synchronize method

* Implement IEquatable on the Register struct

* Fix identation

ChocolArm64/IntermediateRepresentation/RegisterMask.cs

@@ -0,0 +1,56 @@
+using System;
+
+namespace ChocolArm64.IntermediateRepresentation
+{
+    struct RegisterMask : IEquatable<RegisterMask>
+    {
+        public long IntMask { get; set; }
+        public long VecMask { get; set; }
+
+        public RegisterMask(long intMask, long vecMask)
+        {
+            IntMask = intMask;
+            VecMask = vecMask;
+        }
+
+        public static RegisterMask operator &(RegisterMask x, RegisterMask y)
+        {
+            return new RegisterMask(x.IntMask & y.IntMask, x.VecMask & y.VecMask);
+        }
+
+        public static RegisterMask operator |(RegisterMask x, RegisterMask y)
+        {
+            return new RegisterMask(x.IntMask | y.IntMask, x.VecMask | y.VecMask);
+        }
+
+        public static RegisterMask operator ~(RegisterMask x)
+        {
+            return new RegisterMask(~x.IntMask, ~x.VecMask);
+        }
+
+        public static bool operator ==(RegisterMask x, RegisterMask y)
+        {
+            return x.Equals(y);
+        }
+
+        public static bool operator !=(RegisterMask x, RegisterMask y)
+        {
+            return !x.Equals(y);
+        }
+
+        public override bool Equals(object obj)
+        {
+            return obj is RegisterMask regMask && Equals(regMask);
+        }
+
+        public bool Equals(RegisterMask other)
+        {
+            return IntMask == other.IntMask && VecMask == other.VecMask;
+        }
+
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(IntMask, VecMask);
+        }
+    }
+}