[runtime] Introduce FastNewStrictArgumentsStub to optimize strict arguments.

src/arm/builtins-arm.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.
 
 #if V8_TARGET_ARCH_ARM
 
 #include "src/codegen.h"
 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/full-codegen/full-codegen.h"
@@ skipping 1931 matching lines @@
       __ Push(r1, r3, r0);
       __ CallRuntime(Runtime::kCreateListFromArrayLike);
       __ Pop(r1, r3);
       __ ldr(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
       __ SmiUntag(r2);
     }
     __ jmp(&done_create);
 
     // Try to create the list from an arguments object.
     __ bind(&create_arguments);
-    __ ldr(r2,
-           FieldMemOperand(r0, JSObject::kHeaderSize +
-                                   Heap::kArgumentsLengthIndex * kPointerSize));
+    __ ldr(r2, FieldMemOperand(r0, JSArgumentsObject::kLengthOffset));
     __ ldr(r4, FieldMemOperand(r0, JSObject::kElementsOffset));
     __ ldr(ip, FieldMemOperand(r4, FixedArray::kLengthOffset));
     __ cmp(r2, ip);
     __ b(ne, &create_runtime);
     __ SmiUntag(r2);
     __ mov(r0, r4);
     __ b(&done_create);
 
     // Try to create the list from a JSArray object.
     __ bind(&create_array);
@@ skipping 718 matching lines @@
   }
 }
 
 
 #undef __
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM