Refactor class declaration logic to the parser and runtime

src/ast/ast-numbering.cc

Index: src/ast/ast-numbering.cc
diff --git a/src/ast/ast-numbering.cc b/src/ast/ast-numbering.cc
index e2ee8657976518ede891e3cd126108d1f223a214..2f6bb533d94745627539810c343942fcd4a66692 100644
--- a/src/ast/ast-numbering.cc
+++ b/src/ast/ast-numbering.cc
@@ -463,22 +463,6 @@ void AstNumberingVisitor::VisitForStatement(ForStatement* node) {
 }
 
 
-void AstNumberingVisitor::VisitClassLiteral(ClassLiteral* node) {
-  IncrementNodeCount();
-  DisableCrankshaft(kClassLiteral);

[adamk, 2016/07/14 22:00:47]

I have another guess for why this got slower. I wonder if you're going through
Crankshaft where previously you were going through TurboFan? And because this is
all implemented as runtime calls you're no longer getting any optimization when
you hit the optimizer.

-  node->set_base_id(ReserveIdRange(node->num_ids()));
-  if (node->extends()) Visit(node->extends());
-  if (node->constructor()) Visit(node->constructor());
-  if (node->class_variable_proxy()) {
-    VisitVariableProxy(node->class_variable_proxy());
-  }
-  for (int i = 0; i < node->properties()->length(); i++) {
-    VisitObjectLiteralProperty(node->properties()->at(i));
-  }
-  ReserveFeedbackSlots(node);
-}
-
-
 void AstNumberingVisitor::VisitObjectLiteral(ObjectLiteral* node) {
   IncrementNodeCount();
   node->set_base_id(ReserveIdRange(node->num_ids()));