[Isolates] Merge 7201:7258 from bleeding_edge to isolates.

src/x64/codegen-x64.cc

Index: src/x64/codegen-x64.cc
===================================================================
--- src/x64/codegen-x64.cc	(revision 7254)
+++ src/x64/codegen-x64.cc	(working copy)
@@ -634,7 +634,9 @@
     // allocated yet.
     frame_->Push(FACTORY->arguments_marker());
   } else {
-    ArgumentsAccessStub stub(ArgumentsAccessStub::NEW_OBJECT);
+    ArgumentsAccessStub stub(is_strict_mode()
+        ? ArgumentsAccessStub::NEW_STRICT
+        : ArgumentsAccessStub::NEW_NON_STRICT);
     frame_->PushFunction();
     frame_->PushReceiverSlotAddress();
     frame_->Push(Smi::FromInt(scope()->num_parameters()));
@@ -4261,10 +4263,11 @@
 
   // Use the fast case closure allocation code that allocates in new
   // space for nested functions that don't need literals cloning.
-  if (scope()->is_function_scope() &&
-      function_info->num_literals() == 0 &&
-      !pretenure) {
-    FastNewClosureStub stub;
+  if (!pretenure &&
+      scope()->is_function_scope() &&
+      function_info->num_literals() == 0) {
+    FastNewClosureStub stub(
+        function_info->strict_mode() ? kStrictMode : kNonStrictMode);
     frame_->Push(function_info);
     Result answer = frame_->CallStub(&stub, 1);
     frame_->Push(&answer);