Add convenience method to print types for debugging.

src/types.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/types.h"
 
 #include "src/ostreams.h"
 #include "src/types-inl.h"
 
 namespace v8 {
@@ skipping 922 matching lines @@
       UNREACHABLE();
     }
   }
   if (dim == BOTH_DIMS) os << "/";
   if (dim != SEMANTIC_DIM) {
     BitsetType::Print(os, REPRESENTATION(this->BitsetLub()));
   }
 }
 
 
+#ifdef DEBUG
+template <class Config>
+void TypeImpl<Config>::Print() {
+  OFStream os(stdout);
+  PrintTo(os);
+  os << endl;
+}
+#endif
+
+
 // -----------------------------------------------------------------------------
 // Instantiations.
 
 template class TypeImpl<ZoneTypeConfig>;
 template class TypeImpl<ZoneTypeConfig>::Iterator<i::Map>;
 template class TypeImpl<ZoneTypeConfig>::Iterator<i::Object>;
 
 template class TypeImpl<HeapTypeConfig>;
 template class TypeImpl<HeapTypeConfig>::Iterator<i::Map>;
 template class TypeImpl<HeapTypeConfig>::Iterator<i::Object>;
 
 template TypeImpl<ZoneTypeConfig>::TypeHandle
   TypeImpl<ZoneTypeConfig>::Convert<HeapType>(
     TypeImpl<HeapTypeConfig>::TypeHandle, TypeImpl<ZoneTypeConfig>::Region*);
 template TypeImpl<HeapTypeConfig>::TypeHandle
   TypeImpl<HeapTypeConfig>::Convert<Type>(
     TypeImpl<ZoneTypeConfig>::TypeHandle, TypeImpl<HeapTypeConfig>::Region*);
 
 } }  // namespace v8::internal