Simplify the way constructors are called and avoid pushing...

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
===================================================================
--- src/ia32/codegen-ia32.cc	(revision 5332)
+++ src/ia32/codegen-ia32.cc	(working copy)
@@ -6390,11 +6390,10 @@
   // actual function to call is resolved after the arguments have been
   // evaluated.
 
-  // Compute function to call and use the global object as the
-  // receiver. There is no need to use the global proxy here because
-  // it will always be replaced with a newly allocated object.
+  // Push constructor on the stack.  If it's not a function it's used as
+  // receiver for CALL_NON_FUNCTION, otherwise the value on the stack is
+  // ignored.
   Load(node->expression());
-  LoadGlobal();
 
   // Push the arguments ("left-to-right") on the stack.
   ZoneList<Expression*>* args = node->arguments();
@@ -6407,8 +6406,7 @@
   // constructor invocation.
   CodeForSourcePosition(node->position());
   Result result = frame_->CallConstructor(arg_count);
-  // Replace the function on the stack with the result.
-  frame_->SetElementAt(0, &result);
+  frame_->Push(&result);
 }