[crankshaft] Support calling JS runtime functions.

src/ast/ast-numbering.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ast/ast-numbering.h"
 
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
 
 namespace v8 {
@@ skipping 248 matching lines @@
 void AstNumberingVisitor::VisitFunctionDeclaration(FunctionDeclaration* node) {
   IncrementNodeCount();
   VisitVariableProxy(node->proxy());
   VisitFunctionLiteral(node->fun());
 }
 
 
 void AstNumberingVisitor::VisitCallRuntime(CallRuntime* node) {
   IncrementNodeCount();
   ReserveFeedbackSlots(node);
-  if (node->is_jsruntime()) {
-    // Don't try to optimize JS runtime calls because we bailout on them.
-    DisableCrankshaft(kCallToAJavaScriptRuntimeFunction);
-  }
   node->set_base_id(ReserveIdRange(CallRuntime::num_ids()));
   VisitArguments(node->arguments());
 }
 
 
 void AstNumberingVisitor::VisitWithStatement(WithStatement* node) {
   IncrementNodeCount();
   DisableCrankshaft(kWithStatement);
   node->set_base_id(ReserveIdRange(WithStatement::num_ids()));
   Visit(node->expression());
@@ skipping 308 matching lines @@
 }
 
 
 bool AstNumbering::Renumber(Isolate* isolate, Zone* zone,
                             FunctionLiteral* function) {
   AstNumberingVisitor visitor(isolate, zone);
   return visitor.Renumber(function);
 }
 }  // namespace internal
 }  // namespace v8