Introduce a code stub version of Array.prototype.push

src/interface-descriptors.cc

 // Copyright 2012 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/interface-descriptors.h"
 
 namespace v8 {
 namespace internal {
 
 namespace {
@@ skipping 312 matching lines @@
   data->InitializePlatformSpecific(0, nullptr);
 }
 
 
 void GrowArrayElementsDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {ObjectRegister(), KeyRegister()};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
+FunctionType* FastArrayPushDescriptor::BuildCallInterfaceDescriptorFunctionType(
+    Isolate* isolate, int paramater_count) {
+  Zone* zone = isolate->interface_descriptor_zone();
+  FunctionType* function =
+      Type::Function(AnyTagged(zone), AnyTagged(zone), 1, zone)->AsFunction();
+  function->InitParameter(0, UntaggedIntegral32(zone));  // actual #arguments
+  return function;
+}
+
 FunctionType*
 FastCloneRegExpDescriptor::BuildCallInterfaceDescriptorFunctionType(
     Isolate* isolate, int paramater_count) {
   Zone* zone = isolate->interface_descriptor_zone();
   FunctionType* function =
       Type::Function(AnyTagged(zone), Type::Undefined(), 4, zone)->AsFunction();
   function->InitParameter(0, AnyTagged(zone));  // closure
   function->InitParameter(1, SmiType(zone));    // literal_index
   function->InitParameter(2, AnyTagged(zone));  // pattern
   function->InitParameter(3, AnyTagged(zone));  // flags
@@ skipping 180 matching lines @@
   function->InitParameter(kAccumulatorParameter, AnyTagged(zone));
   function->InitParameter(kRegisterFileParameter, ExternalPointer(zone));
   function->InitParameter(kBytecodeOffsetParameter, UntaggedIntegral32(zone));
   function->InitParameter(kBytecodeArrayParameter, AnyTagged(zone));
   function->InitParameter(kDispatchTableParameter, AnyTagged(zone));
   return function;
 }
 
 }  // namespace internal
 }  // namespace v8