Port "Add flag to disable lazy compilation of invocation dispatchers."

runtime/vm/dart_entry.cc

 // Copyright (c) 2011, 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/dart_entry.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
 #include "vm/debugger.h"
 #include "vm/object_store.h"
 #include "vm/resolver.h"
 #include "vm/simulator.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
 
 namespace dart {
 
+DECLARE_FLAG(bool, lazy_dispatchers);
+
 // A cache of VM heap allocated arguments descriptors.
 RawArray* ArgumentsDescriptor::cached_args_descriptors_[kCachedDescriptorCount];
 
 
 RawObject* DartEntry::InvokeFunction(const Function& function,
                                      const Array& arguments) {
   const Array& arguments_descriptor =
       Array::Handle(ArgumentsDescriptor::New(arguments.Length()));
   return InvokeFunction(function, arguments, arguments_descriptor);
 }
@@ skipping 151 matching lines @@
   allocation_args.SetAt(1, arguments_descriptor);
   allocation_args.SetAt(2, arguments);
   allocation_args.SetAt(3, Bool::False());  // Not a super invocation.
   const Object& invocation_mirror = Object::Handle(
       InvokeFunction(allocation_function, allocation_args));
 
   // Now use the invocation mirror object and invoke NoSuchMethod.
   const int kNumArguments = 2;
   ArgumentsDescriptor args_desc(
       Array::Handle(ArgumentsDescriptor::New(kNumArguments)));
-  const Function& function = Function::Handle(
+  Function& function = Function::Handle(
       Resolver::ResolveDynamic(receiver,
                                Symbols::NoSuchMethod(),
                                args_desc));
+  if (function.IsNull()) {
+    ASSERT(!FLAG_lazy_dispatchers);
+    // If noSuchMethod(invocation) is not found, call Object::noSuchMethod.
+    Isolate* isolate = Isolate::Current();
+    function ^= Resolver::ResolveDynamicForReceiverClass(
+        Class::Handle(isolate, isolate->object_store()->object_class()),
+        Symbols::NoSuchMethod(),
+        args_desc);
+  }
   ASSERT(!function.IsNull());
   const Array& args = Array::Handle(Array::New(kNumArguments));
   args.SetAt(0, receiver);
   args.SetAt(1, invocation_mirror);
   return InvokeFunction(function, args);
 }
 
 
 ArgumentsDescriptor::ArgumentsDescriptor(const Array& array)
     : array_(array) {
@@ skipping 314 matching lines @@
   const Array& args = Array::Handle(Array::New(kNumArguments));
   args.SetAt(0, map);
   args.SetAt(1, key);
   args.SetAt(2, value);
   const Object& result = Object::Handle(DartEntry::InvokeFunction(function,
                                                                   args));
   return result.raw();
 }
 
 }  // namespace dart