--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/utilities/constantTag.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "utilities/constantTag.hpp"
+#include "utilities/ostream.hpp"
+
+#ifndef PRODUCT
+
+void constantTag::print_on(outputStream* st) const {
+  st->print("%s", internal_name());
+}
+
+#endif // PRODUCT
+
+BasicType constantTag::basic_type() const {
+  switch (_tag) {
+    case JVM_CONSTANT_Integer :
+      return T_INT;
+    case JVM_CONSTANT_Float :
+      return T_FLOAT;
+    case JVM_CONSTANT_Long :
+      return T_LONG;
+    case JVM_CONSTANT_Double :
+      return T_DOUBLE;
+
+    case JVM_CONSTANT_Class :
+    case JVM_CONSTANT_String :
+    case JVM_CONSTANT_UnresolvedClass :
+    case JVM_CONSTANT_UnresolvedClassInError :
+    case JVM_CONSTANT_ClassIndex :
+    case JVM_CONSTANT_StringIndex :
+    case JVM_CONSTANT_MethodHandle :
+    case JVM_CONSTANT_MethodHandleInError :
+    case JVM_CONSTANT_MethodType :
+    case JVM_CONSTANT_MethodTypeInError :
+      return T_OBJECT;
+    default:
+      ShouldNotReachHere();
+      return T_ILLEGAL;
+  }
+}
+
+
+jbyte constantTag::non_error_value() const {
+  switch (_tag) {
+  case JVM_CONSTANT_UnresolvedClassInError:
+    return JVM_CONSTANT_UnresolvedClass;
+  case JVM_CONSTANT_MethodHandleInError:
+    return JVM_CONSTANT_MethodHandle;
+  case JVM_CONSTANT_MethodTypeInError:
+    return JVM_CONSTANT_MethodType;
+  default:
+    return _tag;
+  }
+}
+
+
+jbyte constantTag::error_value() const {
+  switch (_tag) {
+  case JVM_CONSTANT_UnresolvedClass:
+    return JVM_CONSTANT_UnresolvedClassInError;
+  case JVM_CONSTANT_MethodHandle:
+    return JVM_CONSTANT_MethodHandleInError;
+  case JVM_CONSTANT_MethodType:
+    return JVM_CONSTANT_MethodTypeInError;
+  default:
+    ShouldNotReachHere();
+    return JVM_CONSTANT_Invalid;
+  }
+}
+
+const char* constantTag::internal_name() const {
+  switch (_tag) {
+    case JVM_CONSTANT_Invalid :
+      return "Invalid index";
+    case JVM_CONSTANT_Class :
+      return "Class";
+    case JVM_CONSTANT_Fieldref :
+      return "Field";
+    case JVM_CONSTANT_Methodref :
+      return "Method";
+    case JVM_CONSTANT_InterfaceMethodref :
+      return "InterfaceMethod";
+    case JVM_CONSTANT_String :
+      return "String";
+    case JVM_CONSTANT_Integer :
+      return "Integer";
+    case JVM_CONSTANT_Float :
+      return "Float";
+    case JVM_CONSTANT_Long :
+      return "Long";
+    case JVM_CONSTANT_Double :
+      return "Double";
+    case JVM_CONSTANT_NameAndType :
+      return "NameAndType";
+    case JVM_CONSTANT_MethodHandle :
+      return "MethodHandle";
+    case JVM_CONSTANT_MethodHandleInError :
+      return "MethodHandle Error";
+    case JVM_CONSTANT_MethodType :
+      return "MethodType";
+    case JVM_CONSTANT_MethodTypeInError :
+      return "MethodType Error";
+    case JVM_CONSTANT_InvokeDynamic :
+      return "InvokeDynamic";
+    case JVM_CONSTANT_Utf8 :
+      return "Utf8";
+    case JVM_CONSTANT_UnresolvedClass :
+      return "Unresolved Class";
+    case JVM_CONSTANT_UnresolvedClassInError :
+      return "Unresolved Class Error";
+    case JVM_CONSTANT_ClassIndex :
+      return "Unresolved Class Index";
+    case JVM_CONSTANT_StringIndex :
+      return "Unresolved String Index";
+    default:
+      ShouldNotReachHere();
+      return "Illegal";
+  }
+}