[ic] Merge LoadGlobalIC_Slow builtins for inside typeof and outside typeof cases.

src/ic/ic.cc

Index: src/ic/ic.cc
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index d92d22df40eb71fb14c3fdd53b9645d6226a661e..62571612d72ed3a7c0075dc12662ba9c7814efe7 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -2313,6 +2313,54 @@ RUNTIME_FUNCTION(Runtime_LoadGlobalIC_Miss) {
   return *result;
 }
 
+RUNTIME_FUNCTION(Runtime_LoadGlobalIC_Slow) {
+  HandleScope scope(isolate);
+  DCHECK_EQ(2, args.length());
+  CONVERT_SMI_ARG_CHECKED(slot, 0);
+  CONVERT_ARG_HANDLE_CHECKED(TypeFeedbackVector, vector, 1);
+
+  FeedbackVectorSlot vector_slot = vector->ToSlot(slot);
+  DCHECK_EQ(FeedbackVectorSlotKind::LOAD_GLOBAL_IC,
+            vector->GetKind(vector_slot));
+  Handle<String> name(vector->GetName(vector_slot), isolate);
+  DCHECK_NE(*name, *isolate->factory()->empty_string());
+
+  Handle<JSGlobalObject> global = isolate->global_object();
+
+  Handle<ScriptContextTable> script_contexts(
+      global->native_context()->script_context_table());
+
+  ScriptContextTable::LookupResult lookup_result;
+  if (ScriptContextTable::Lookup(script_contexts, name, &lookup_result)) {
+    Handle<Context> script_context = ScriptContextTable::GetContext(
+        script_contexts, lookup_result.context_index);
+    Handle<Object> result =
+        FixedArray::get(*script_context, lookup_result.slot_index, isolate);
+    if (*result == *isolate->factory()->the_hole_value()) {
+      THROW_NEW_ERROR_RETURN_FAILURE(
+          isolate, NewReferenceError(MessageTemplate::kNotDefined, name));
+    }
+    return *result;
+  }
+
+  Handle<Object> result;
+  bool is_found = false;
+  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+      isolate, result,
+      Runtime::GetObjectProperty(isolate, global, name, &is_found));
+  if (!is_found) {
+    LoadICNexus nexus(isolate);
+    LoadIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus);
+    // It is actually a LoadGlobalICs here but the predicate handles this case
+    // properly.
+    if (ic.ShouldThrowReferenceError()) {
+      THROW_NEW_ERROR_RETURN_FAILURE(
+          isolate, NewReferenceError(MessageTemplate::kNotDefined, name));
+    }
+  }
+  return *result;
+}
+
 // Used from ic-<arch>.cc
 RUNTIME_FUNCTION(Runtime_KeyedLoadIC_Miss) {
   TimerEventScope<TimerEventIcMiss> timer(isolate);