Use NeedsContext() instead of comparing num_heap_slots().

src/crankshaft/hydrogen.cc

 // Copyright 2013 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/crankshaft/hydrogen.h"
 
 #include <memory>
 #include <sstream>
 
 #include "src/allocation-site-scopes.h"
@@ skipping 8381 matching lines @@
       target_shared->DisableOptimization(kParseScopeError);
     }
     TraceInline(target, caller, "parse failure");
     return false;
   }
   if (target_shared->dont_crankshaft()) {
     TraceInline(target, caller, "ParseAndAnalyze found incompatibility");
     return false;
   }
 
-  if (target_info.scope()->num_heap_slots() > 0) {
+  if (target_info.scope()->NeedsContext()) {
     TraceInline(target, caller, "target has context-allocated variables");
     return false;
   }
 
   if (target_info.scope()->rest_parameter() != nullptr) {
     TraceInline(target, caller, "target uses rest parameters");
     return false;
   }
 
   FunctionLiteral* function = target_info.literal();
@@ skipping 5016 matching lines @@
     isolate()->GetHTracer()->TraceHydrogen(name(), graph_);
   }
 
 #ifdef DEBUG
   graph_->Verify(false);  // No full verify.
 #endif
 }
 
 }  // namespace internal
 }  // namespace v8