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

runtime/vm/dart_entry.cc

Index: runtime/vm/dart_entry.cc
diff --git a/runtime/vm/dart_entry.cc b/runtime/vm/dart_entry.cc
index fd91fb0b017106352f93bfeae2ebfe54131cb076..e517fa269927a8201fbb9a8e0725a22cbb14111a 100644
--- a/runtime/vm/dart_entry.cc
+++ b/runtime/vm/dart_entry.cc
@@ -213,7 +213,9 @@ RawObject* DartEntry::InvokeNoSuchMethod(const Instance& receiver,
                                          const String& target_name,
                                          const Array& arguments,
                                          const Array& arguments_descriptor) {
-  ASSERT(receiver.raw() == arguments.At(0));
+  const ArgumentsDescriptor args_desc(arguments_descriptor);
+  const intptr_t receiver_index = args_desc.TypeArgsLen() == 0 ? 0 : 1;
+  ASSERT(receiver.raw() == arguments.At(receiver_index));
   // Allocate an Invocation object.
   const Library& core_lib = Library::Handle(Library::CoreLibrary());
 
@@ -241,10 +243,10 @@ RawObject* DartEntry::InvokeNoSuchMethod(const Instance& receiver,
   // Now use the invocation mirror object and invoke NoSuchMethod.
   const int kTypeArgsLen = 0;
   const int kNumArguments = 2;
-  ArgumentsDescriptor args_desc(
+  ArgumentsDescriptor nsm_args_desc(
       Array::Handle(ArgumentsDescriptor::New(kTypeArgsLen, kNumArguments)));
-  Function& function = Function::Handle(
-      Resolver::ResolveDynamic(receiver, Symbols::NoSuchMethod(), args_desc));
+  Function& function = Function::Handle(Resolver::ResolveDynamic(
+      receiver, Symbols::NoSuchMethod(), nsm_args_desc));
   if (function.IsNull()) {
     ASSERT(!FLAG_lazy_dispatchers);
     // If noSuchMethod(invocation) is not found, call Object::noSuchMethod.
@@ -252,7 +254,7 @@ RawObject* DartEntry::InvokeNoSuchMethod(const Instance& receiver,
     function ^= Resolver::ResolveDynamicForReceiverClass(
         Class::Handle(thread->zone(),
                       thread->isolate()->object_store()->object_class()),
-        Symbols::NoSuchMethod(), args_desc);
+        Symbols::NoSuchMethod(), nsm_args_desc);
   }
   ASSERT(!function.IsNull());
   const Array& args = Array::Handle(Array::New(kNumArguments));