[VM generic function reification] Support generic functions in Invocation class.

runtime/vm/object_graph.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object_graph.h"
 
 #include "vm/dart.h"
 #include "vm/dart_api_state.h"
 #include "vm/growable_array.h"
 #include "vm/isolate.h"
@@ skipping 19 matching lines @@
       : ObjectPointerVisitor(isolate),
         include_vm_objects_(true),
         data_(kInitialCapacity) {}
 
   // Marks and pushes. Used to initialize this stack with roots.
   virtual void VisitPointers(RawObject** first, RawObject** last) {
     for (RawObject** current = first; current <= last; ++current) {
       if ((*current)->IsHeapObject() && !(*current)->IsMarked()) {
         if (!include_vm_objects_) {
           intptr_t cid = (*current)->GetClassId();
-          if ((cid < kInstanceCid) && (cid != kContextCid) &&
-              (cid != kFieldCid)) {
+          if (((cid < kInstanceCid) || (cid == kTypeArgumentsCid)) &&
+              (cid != kContextCid) && (cid != kFieldCid)) {
             continue;
           }
         }
         (*current)->SetMarkBit();
         Node node;
         node.ptr = current;
         node.obj = *current;
         data_.Add(node);
       }
     }
@@ skipping 476 matching lines @@
         count_(0) {}
   virtual void VisitPointers(RawObject** first, RawObject** last) {
     for (RawObject** current = first; current <= last; ++current) {
       RawObject* object = *current;
       if (!object->IsHeapObject() || object->IsVMHeapObject()) {
         // Ignore smis and objects in the VM isolate for now.
         // TODO(koda): To track which field each pointer corresponds to,
         // we'll need to encode which fields were omitted here.
         continue;
       }
-      if (only_instances_ && (object->GetClassId() < kInstanceCid)) {
+      if (only_instances_ && ((object->GetClassId() < kInstanceCid) ||
+                              (object->GetClassId() == kTypeArgumentsCid))) {
         continue;
       }
       WritePtr(object, stream_);
       ++count_;
     }
   }
 
   intptr_t count() const { return count_; }
 
  private:
@@ skipping 122 matching lines @@
   intptr_t object_count = visitor.count();
   if (roots == kVM) {
     object_count += 1;  // root
   } else {
     object_count += 2;  // root and stack
   }
   return object_count;
 }
 
 }  // namespace dart