Avoid using full array literal boilerplate cloning for non-nested...

bleeding_edge/src/ia32/codegen-ia32.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4425 matching lines @@
   deferred->Branch(equal);
   deferred->BindExit();
   literals.Unuse();
 
   // Push the resulting array literal boilerplate on the stack.
   frame_->Push(&boilerplate);
 
   // Clone the boilerplate object.
   int length = node->values()->length();
   Result clone;
-  if (node->depth() == 1 &&
-      length <= FastCloneShallowArrayStub::kMaximumLength) {
-    FastCloneShallowArrayStub stub(length);
-    clone = frame_->CallStub(&stub, 1);
+  if (node->depth() == 1) {
+    if (length <= FastCloneShallowArrayStub::kMaximumLength) {
+      FastCloneShallowArrayStub stub(length);
+      clone = frame_->CallStub(&stub, 1);
+    } else {
+      clone = frame_->CallRuntime(Runtime::kCloneShallowLiteralBoilerplate, 1);
+    }
   } else {
     clone = frame_->CallRuntime(Runtime::kCloneLiteralBoilerplate, 1);
   }
   // Push the newly cloned literal object as the result.
   frame_->Push(&clone);
 
   // Generate code to set the elements in the array that are not
   // literals.
   for (int i = 0; i < length; i++) {
     Expression* value = node->values()->at(i);
@@ skipping 4337 matching lines @@
     __ add(Operand(dest), Immediate(2));
   }
   __ sub(Operand(count), Immediate(1));
   __ j(not_zero, &loop);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal