Revert change to always call builtins for Array functions....

src/ia32/stub-cache-ia32.cc

Index: src/ia32/stub-cache-ia32.cc
===================================================================
--- src/ia32/stub-cache-ia32.cc	(revision 4073)
+++ src/ia32/stub-cache-ia32.cc	(working copy)
@@ -698,7 +698,8 @@
 
     CallOptimization optimization(lookup);
 
-    if (optimization.is_constant_call()) {
+    if (optimization.is_constant_call() &&
+        !Top::CanHaveSpecialFunctions(holder)) {
       CompileCacheable(masm,
                        object,
                        receiver,
@@ -1332,6 +1333,18 @@
       break;
     }
 
+    case JSARRAY_HAS_FAST_ELEMENTS_CHECK:
+      CheckPrototypes(JSObject::cast(object), edx, holder,
+                      ebx, eax, name, &miss);
+      // Make sure object->HasFastElements().
+      // Get the elements array of the object.
+      __ mov(ebx, FieldOperand(edx, JSObject::kElementsOffset));
+      // Check that the object is in fast mode (not dictionary).
+      __ cmp(FieldOperand(ebx, HeapObject::kMapOffset),
+             Immediate(Factory::fixed_array_map()));
+      __ j(not_equal, &miss, not_taken);
+      break;
+
     default:
       UNREACHABLE();
   }