Smi element fixes in Builtins.

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index 23f7bdb1d95c82fb1cb8524cdbf7d3ba02f261e8..5104f6d0d144e98eb6343003df40d9f02662ed7e 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -660,7 +660,7 @@ BUILTIN(ArraySlice) {
   int len = -1;
   if (receiver->IsJSArray()) {
     JSArray* array = JSArray::cast(receiver);
-    if (!array->HasFastElements() ||
+    if (!array->HasFastTypeElements() ||
         !IsJSArrayFastElementMovingAllowed(heap, array)) {
       return CallJsBuiltin(isolate, "ArraySlice", args);
     }
@@ -676,7 +676,7 @@ BUILTIN(ArraySlice) {
     bool is_arguments_object_with_fast_elements =
         receiver->IsJSObject()
         && JSObject::cast(receiver)->map() == arguments_map
-        && JSObject::cast(receiver)->HasFastElements();
+        && JSObject::cast(receiver)->HasFastTypeElements();
     if (!is_arguments_object_with_fast_elements) {
       return CallJsBuiltin(isolate, "ArraySlice", args);
     }
@@ -963,7 +963,7 @@ BUILTIN(ArrayConcat) {
   int result_len = 0;
   for (int i = 0; i < n_arguments; i++) {
     Object* arg = args[i];
-    if (!arg->IsJSArray() || !JSArray::cast(arg)->HasFastElements()
+    if (!arg->IsJSArray() || !JSArray::cast(arg)->HasFastTypeElements()
         || JSArray::cast(arg)->GetPrototype() != array_proto) {
       return CallJsBuiltin(isolate, "ArrayConcat", args);
     }