HydrogenCodeStubs consume stack arguments via descriptor.

src/x64/code-stubs-x64.cc

 // Copyright 2013 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/v8.h"
 
 #if V8_TARGET_ARCH_X64
 
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 14 matching lines @@
     Isolate* isolate, CodeStubDescriptor* descriptor,
     int constant_stack_parameter_count) {
   Address deopt_handler = Runtime::FunctionForId(
       Runtime::kArrayConstructor)->entry;
 
   if (constant_stack_parameter_count == 0) {
     descriptor->Initialize(deopt_handler, constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE);
   } else {
     descriptor->Initialize(rax, deopt_handler, constant_stack_parameter_count,
-                           JS_FUNCTION_STUB_MODE, PASS_ARGUMENTS);
+                           JS_FUNCTION_STUB_MODE);
   }
 }
 
 
 static void InitializeInternalArrayConstructorDescriptor(
     Isolate* isolate, CodeStubDescriptor* descriptor,
     int constant_stack_parameter_count) {
   Address deopt_handler = Runtime::FunctionForId(
       Runtime::kInternalArrayConstructor)->entry;
 
   if (constant_stack_parameter_count == 0) {
     descriptor->Initialize(deopt_handler, constant_stack_parameter_count,
                            JS_FUNCTION_STUB_MODE);
   } else {
     descriptor->Initialize(rax, deopt_handler, constant_stack_parameter_count,
-                           JS_FUNCTION_STUB_MODE, PASS_ARGUMENTS);
+                           JS_FUNCTION_STUB_MODE);
   }
 }
 
 
 void ArrayNoArgumentConstructorStub::InitializeDescriptor(
     CodeStubDescriptor* descriptor) {
   InitializeArrayConstructorDescriptor(isolate(), descriptor, 0);
 }
 
 
@@ skipping 5373 matching lines @@
                            kStackSpace, nullptr, return_value_operand, NULL);
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_X64