This is https://chromiumcodereview.appspot.com/10581006/ that I forgot to submit, and messed up the…

runtime/vm/object.cc

 // Copyright (c) 2012, 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.h"
 
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
 #include "vm/bootstrap.h"
@@ skipping 6638 matching lines @@
   return num_args_tested() + 1 /* target function*/;
 }
 
 
 intptr_t ICData::NumberOfChecks() const {
   // Do not count the sentinel;
   return (Array::Handle(ic_data()).Length() / TestEntryLength()) - 1;
 }
 
 
-void ICData::AddCheck(const GrowableArray<const Class*>& classes,
+void ICData::AddCheck(const GrowableArray<intptr_t>& class_ids,
                       const Function& target) const {
-  ASSERT(classes.length() == num_args_tested());
+  ASSERT(class_ids.length() == num_args_tested());
   intptr_t old_num = NumberOfChecks();
   Array& data = Array::Handle(ic_data());
   intptr_t new_len = data.Length() + TestEntryLength();
   data = Array::Grow(data, new_len, Heap::kOld);
   set_ic_data(data);
   intptr_t data_pos = old_num * TestEntryLength();
-  for (intptr_t i = 0; i < classes.length(); i++) {
+  for (intptr_t i = 0; i < class_ids.length(); i++) {
     // Null is used as terminating value, do not add it.
-    ASSERT(!classes[i]->IsNull());
-    data.SetAt(data_pos++, *(classes[i]));
+    ASSERT(class_ids[i] != kNullClass);
+    data.SetAt(data_pos++, Smi::Handle(Smi::New(class_ids[i])));
   }
   ASSERT(!target.IsNull());
   data.SetAt(data_pos, target);
 }
 
 
 void ICData::GetCheckAt(intptr_t index,
-                        GrowableArray<const Class*>* classes,
+                        GrowableArray<intptr_t>* class_ids,
                         Function* target) const {
-  ASSERT(classes != NULL);
+  ASSERT(class_ids != NULL);
   ASSERT(target != NULL);
-  classes->Clear();
+  class_ids->Clear();
   const Array& data = Array::Handle(ic_data());
   intptr_t data_pos = index * TestEntryLength();
+  Smi& smi = Smi::Handle();
   for (intptr_t i = 0; i < num_args_tested(); i++) {
-    Class& cls = Class::ZoneHandle();
-    cls ^= data.At(data_pos++);
-    classes->Add(&cls);
+    smi ^= data.At(data_pos++);
+    class_ids->Add(smi.Value());
   }
   (*target) ^= data.At(data_pos);
 }
 
 
 void ICData::GetOneClassCheckAt(
-    int index, Class* cls, Function* target) const {
-  ASSERT(cls != NULL);
+    int index, intptr_t* class_id, Function* target) const {
+  ASSERT(class_id != NULL);
   ASSERT(target != NULL);
   ASSERT(num_args_tested() == 1);
   const Array& data = Array::Handle(ic_data());
   intptr_t data_pos = index * TestEntryLength();
-  *cls ^= data.At(data_pos);
+  Smi& smi = Smi::Handle();
+  smi ^= data.At(data_pos);
+  *class_id = smi.Value();
   *target ^= data.At(data_pos + 1);
 }
 
 
 RawICData* ICData::New(const Function& function,
                        const String& target_name,
                        intptr_t id,
                        intptr_t num_args_tested) {
   ASSERT(num_args_tested > 0);
   const Class& cls = Class::Handle(Object::icdata_class());
@@ skipping 3413 matching lines @@
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = reinterpret_cast<char*>(
       Isolate::Current()->current_zone()->Allocate(len + 1));
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart