[interp] support ntype.CompareTo ()

mono/mini/builtin-types.cs

@@ -248,6 +248,28 @@ static int test_0_nint_cmp_large_val ()
 		return 0;
 	}
 
+	static int test_0_nint_compareto ()
+	{
+		if (((nint) 0).CompareTo ((nint) 0) != 0)
+			return 1;
+		if (((nint) 0).CompareTo ((nint) 1) != -1)
+			return 2;
+		if (((nint) 1).CompareTo ((nint) 0) != 1)
+			return 3;
+
+		if (((nint) 0).CompareTo ((object)(nint) 0) != 0)
+			return 4;
+		if (((nint) 0).CompareTo ((object)(nint) 1) != -1)
+			return 5;
+		if (((nint) 1).CompareTo ((object)(nint) 0) != 1)
+			return 6;
+
+		if (((nint) 1).CompareTo (null) != 1)
+			return 7;
+
+		return 0;
+	}
+
 	// static int test_0_nint_call_boxed_equals ()
 	// {
 	// 	object x = new nint (10);
@@ -610,6 +632,28 @@ static int test_0_nuint_cmp_large_val ()
 		return 0;
 	}
 
+	static int test_0_nuint_compareto ()
+	{
+		if (((nuint) 0).CompareTo ((nuint) 0) != 0)
+			return 1;
+		if (((nuint) 0).CompareTo ((nuint) 1) != -1)
+			return 2;
+		if (((nuint) 1).CompareTo ((nuint) 0) != 1)
+			return 3;
+
+		if (((nuint) 0).CompareTo ((object)(nuint) 0) != 0)
+			return 4;
+		if (((nuint) 0).CompareTo ((object)(nuint) 1) != -1)
+			return 5;
+		if (((nuint) 1).CompareTo ((object)(nuint) 0) != 1)
+			return 6;
+
+		if (((nuint) 1).CompareTo (null) != 1)
+			return 7;
+
+		return 0;
+	}
+
 	// static int test_0_nuint_call_boxed_equals ()
 	// {
 	// 	object x = new nuint (10);
@@ -965,6 +1009,28 @@ static int test_0_nfloat_isnan ()
 		return nfloat.IsNaN (x) ? 0 : 1;
 	}
 
+	static int test_0_nfloat_compareto ()
+	{
+		if (((nfloat) 0).CompareTo ((nfloat) 0) != 0)
+			return 1;
+		if (((nfloat) 0).CompareTo ((nfloat) 1) != -1)
+			return 2;
+		if (((nfloat) 1).CompareTo ((nfloat) 0) != 1)
+			return 3;
+
+		if (((nfloat) 0).CompareTo ((object)(nfloat) 0) != 0)
+			return 4;
+		if (((nfloat) 0).CompareTo ((object)(nfloat) 1) != -1)
+			return 5;
+		if (((nfloat) 1).CompareTo ((object)(nfloat) 0) != 1)
+			return 6;
+
+		if (((nfloat) 1).CompareTo (null) != 1)
+			return 7;
+
+		return 0;
+	}
+
 	// static int test_0_nfloat_call_boxed_equals ()
 	// {
 	// 	object x = new nfloat (10f);

mono/mini/interp/transform.c

@@ -1051,6 +1051,16 @@ interp_handle_intrinsics (TransformData *td, MonoMethod *target_method, MonoMeth
 			SET_TYPE (td->sp - 1, stack_type [mt], magic_class);
 			td->ip += 5;
 			return TRUE;
+		} else if (!strcmp ("CompareTo", tm)) {
+			MonoType *arg = csignature->params [0];
+
+			/* on 'System.n*::CompareTo (System.n*)' variant we need to push managed
+			 * pointer instead of value */
+			if (arg->type == MONO_TYPE_VALUETYPE)
+				emit_store_value_as_local (td, arg);
+
+			/* emit call to managed conversion method */
+			return FALSE;
 		} else if (!strcmp (".cctor", tm)) {
 			/* white list */
 			return FALSE;