Add verification code to dependent code.

src/compiler.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 129 matching lines @@
 
 void CompilationInfo::CommitDependentMaps(Handle<Code> code) {
   for (int i = 0; i < DependentCode::kGroupCount; i++) {
     ZoneList<Handle<Map> >* group_maps = dependent_maps_[i];
     if (group_maps == NULL) continue;
     ASSERT(!object_wrapper_.is_null());
     for (int j = 0; j < group_maps->length(); j++) {
       group_maps->at(j)->dependent_code()->UpdateToFinishedCode(
           static_cast<DependentCode::DependencyGroup>(i), this, *code);
     }
+#ifndef DEBUG
     dependent_maps_[i] = NULL;  // Zone-allocated, no need to delete.
+#endif
   }
 }
 
 
 void CompilationInfo::RollbackDependentMaps() {
   // Unregister from all dependent maps if not yet committed.
   for (int i = 0; i < DependentCode::kGroupCount; i++) {
     ZoneList<Handle<Map> >* group_maps = dependent_maps_[i];
     if (group_maps == NULL) continue;
     for (int j = 0; j < group_maps->length(); j++) {
       group_maps->at(j)->dependent_code()->RemoveCompilationInfo(
           static_cast<DependentCode::DependencyGroup>(i), this);
     }
+#ifndef DEBUG
     dependent_maps_[i] = NULL;  // Zone-allocated, no need to delete.
+#endif
   }
+
+#ifdef DEBUG
+  // Verify that with sequential recompilation, we don't leave any
+  // compilation wrappers behind.
+  if (!FLAG_parallel_recompilation) {
+    for (int i = 0; i < DependentCode::kGroupCount; i++) {
+      ZoneList<Handle<Map> >* group_maps = dependent_maps_[i];
+      if (group_maps == NULL) continue;
+      for (int j = 0; j < group_maps->length(); j++) {
+        DependentCode* dependent_code = group_maps->at(j)->dependent_code();
+        DependentCode::GroupStartIndexes starts(dependent_code);
+        for (int i = 0; i < starts.number_of_entries(); i++) {
+          ASSERT(dependent_code->object_at(i)->IsCode());
+        }
+      }
+      dependent_maps_[i] = NULL;  // Zone-allocated, no need to delete.
+    }
+  }
+#endif  // DEBUG
 }
 
 
 int CompilationInfo::num_parameters() const {
   ASSERT(!IsStub());
   return scope()->num_parameters();
 }
 
 
 int CompilationInfo::num_heap_slots() const {
@@ skipping 1025 matching lines @@
     }
   }
 
   GDBJIT(AddCode(Handle<String>(shared->DebugName()),
                  Handle<Script>(info->script()),
                  Handle<Code>(info->code()),
                  info));
 }
 
 } }  // namespace v8::internal