[runtime] Collect IC feedback in DefineDataPropertyInLiteral.

src/runtime/runtime-object.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/debug/debug.h"
 #include "src/isolate-inl.h"
@@ skipping 630 matching lines @@
   CONVERT_PROPERTY_ATTRIBUTES_CHECKED(attrs, 4);
 
   RETURN_FAILURE_ON_EXCEPTION(
       isolate, JSObject::DefineAccessor(obj, name, getter, setter, attrs));
   return isolate->heap()->undefined_value();
 }
 
 
 RUNTIME_FUNCTION(Runtime_DefineDataPropertyInLiteral) {
   HandleScope scope(isolate);
-  DCHECK(args.length() == 4);
+  DCHECK_EQ(6, args.length());
   CONVERT_ARG_HANDLE_CHECKED(JSObject, object, 0);
   CONVERT_ARG_HANDLE_CHECKED(Name, name, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
   CONVERT_SMI_ARG_CHECKED(flag, 3);
+  CONVERT_ARG_HANDLE_CHECKED(TypeFeedbackVector, vector, 4);
+  CONVERT_SMI_ARG_CHECKED(index, 5);
+
+  StoreDataPropertyInLiteralICNexus nexus(vector, vector->ToSlot(index));
+  if (nexus.ic_state() == UNINITIALIZED) {
+    if (name->IsUniqueName()) {
+      nexus.ConfigureMonomorphic(name, handle(object->map()));
+    } else {
+      nexus.ConfigureMegamorphic();
+    }
+  } else if (nexus.ic_state() == MONOMORPHIC) {
+    if (nexus.FindFirstMap() != object->map() ||
+        nexus.GetFeedbackExtra() != *name) {
+      nexus.ConfigureMegamorphic();
+    }
+  }
 
   DataPropertyInLiteralFlags flags =
       static_cast<DataPropertyInLiteralFlag>(flag);
 
   PropertyAttributes attrs = (flags & DataPropertyInLiteralFlag::kDontEnum)
                                  ? PropertyAttributes::DONT_ENUM
                                  : PropertyAttributes::NONE;
 
   if (flags & DataPropertyInLiteralFlag::kSetFunctionName) {
     DCHECK(value->IsJSFunction());
@@ skipping 265 matching lines @@
   if (!success) return isolate->heap()->exception();
   MAYBE_RETURN(
       JSReceiver::CreateDataProperty(&it, value, Object::THROW_ON_ERROR),
       isolate->heap()->exception());
   return *value;
 }
 
 
 }  // namespace internal
 }  // namespace v8