--- old/hotspot/src/share/vm/runtime/fieldType.cpp	2017-09-12 11:16:13.735315665 +0200
+++ new/hotspot/src/share/vm/runtime/fieldType.cpp	2017-09-12 11:16:13.595313142 +0200
@@ -74,6 +74,30 @@
   return false;
 }
 
+static const char dvt_postfix[] = "$Value";
+static const int dvt_postfix_len = 6;
+
+bool FieldType::is_dvt_postfix(Symbol* signature) {
+  int sig_length = signature->utf8_length();
+  int pos = sig_length - dvt_postfix_len;
+  if (pos <= 0) {
+    return false;
+  }
+  for (int i = 0; i < dvt_postfix_len; i++) {
+    if (signature->byte_at(pos) != dvt_postfix[i]) {
+      return false;
+    }
+    pos++;
+  }
+  return true;
+}
+
+char* FieldType::dvt_unmangle_vcc(Symbol* signature) {
+  assert(is_dvt_postfix(signature), "Unmangle that which is not managled");
+  char* str = signature->as_C_string();
+  str[signature->utf8_length() -dvt_postfix_len] = '\0';
+  return str;
+}
 
 BasicType FieldType::get_array_info(Symbol* signature, FieldArrayInfo& fd, TRAPS) {
   assert(basic_type(signature) == T_ARRAY, "must be array");