Optimize functions needing a local context....

src/hydrogen.cc

Index: src/hydrogen.cc
===================================================================
--- src/hydrogen.cc	(revision 6859)
+++ src/hydrogen.cc	(working copy)
@@ -2292,9 +2292,6 @@
   // We don't yet handle the function name for named function expressions.
   if (scope->function() != NULL) BAILOUT("named function expression");
 
-  // We can't handle heap-allocated locals.
-  if (scope->num_heap_slots() > 0) BAILOUT("heap allocated locals");
-
   HConstant* undefined_constant =
       new HConstant(Factory::undefined_value(), Representation::Tagged());
   AddInstruction(undefined_constant);
@@ -2316,6 +2313,10 @@
   // Handle the arguments and arguments shadow variables specially (they do
   // not have declarations).
   if (scope->arguments() != NULL) {
+    if (!scope->arguments()->IsStackAllocated() ||
+        !scope->arguments_shadow()->IsStackAllocated()) {
+      BAILOUT("context-allocated arguments");
+    }
     HArgumentsObject* object = new HArgumentsObject;
     AddInstruction(object);
     graph()->SetArgumentsObject(object);
@@ -4023,6 +4024,7 @@
     }
     return false;
   }
+  if (inner_info.scope()->num_heap_slots() > 0) return false;
   FunctionLiteral* function = inner_info.function();
 
   // Count the number of AST nodes added by inlining this call.