Track loop nesting across function calls when the function...

src/handles.cc

 // Copyright 2006-2008 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 404 matching lines @@
     int num_enum = object->NumberOfEnumProperties();
     Handle<FixedArray> storage = Factory::NewFixedArray(num_enum);
     Handle<FixedArray> sort_array = Factory::NewFixedArray(num_enum);
     object->property_dictionary()->CopyEnumKeysTo(*storage, *sort_array);
     return storage;
   }
 }
 
 
 bool CompileLazyShared(Handle<SharedFunctionInfo> shared,
-                       ClearExceptionFlag flag) {
+                       ClearExceptionFlag flag,
+                       int loop_nesting) {
   // Compile the source information to a code object.
   ASSERT(!shared->is_compiled());
-  bool result = Compiler::CompileLazy(shared);
+  bool result = Compiler::CompileLazy(shared, loop_nesting);
   ASSERT(result != Top::has_pending_exception());
   if (!result && flag == CLEAR_EXCEPTION) Top::clear_pending_exception();
   return result;
 }
 
 
 bool CompileLazy(Handle<JSFunction> function, ClearExceptionFlag flag) {
   // Compile the source information to a code object.
   Handle<SharedFunctionInfo> shared(function->shared());
-  return CompileLazyShared(shared, flag);
+  return CompileLazyShared(shared, flag, 0);
 }
 
 
+bool CompileLazyInLoop(Handle<JSFunction> function, ClearExceptionFlag flag) {
+  // Compile the source information to a code object.
+  Handle<SharedFunctionInfo> shared(function->shared());
+  return CompileLazyShared(shared, flag, 1);
+}
+
 OptimizedObjectForAddingMultipleProperties::
 OptimizedObjectForAddingMultipleProperties(Handle<JSObject> object,
                                            bool condition) {
   object_ = object;
   if (condition && object_->HasFastProperties()) {
     // Normalize the properties of object to avoid n^2 behavior
     // when extending the object multiple properties.
     unused_property_fields_ = object->map()->unused_property_fields();
     NormalizeProperties(object_);
     has_been_transformed_ = true;
@@ skipping 75 matching lines @@
                Handle<Context> compile_context,
                Handle<Context> function_context) {
   Handle<FixedArray> arr = Factory::NewFixedArray(3);
   arr->set(0, Smi::FromInt(index));
   arr->set(1, *compile_context);  // Compile in this context
   arr->set(2, *function_context);  // Set function context to this
   fun->shared()->set_lazy_load_data(*arr);
 }
 
 } }  // namespace v8::internal