CallConstruct also gets call count information if megamorphic.

src/ast/ast.h

 // 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.
 
 #ifndef V8_AST_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/ast/ast-types.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 1903 matching lines @@
 class CallNew final : public Expression {
  public:
   Expression* expression() const { return expression_; }
   ZoneList<Expression*>* arguments() const { return arguments_; }
 
   void set_expression(Expression* e) { expression_ = e; }
 
   // Type feedback information.
   void AssignFeedbackVectorSlots(Isolate* isolate, FeedbackVectorSpec* spec,
                                  FeedbackVectorSlotCache* cache) {
-    callnew_feedback_slot_ = spec->AddGeneralSlot();
-    // Construct calls have two slots, one right after the other.
-    // The second slot stores the call count for monomorphic calls.
-    spec->AddGeneralSlot();
+    // CallNew stores feedback in the exact same way as Call. We can
+    // piggyback on the type feedback infrastructure for calls.
+    callnew_feedback_slot_ = spec->AddCallICSlot();
   }
 
   FeedbackVectorSlot CallNewFeedbackSlot() {
     DCHECK(!callnew_feedback_slot_.IsInvalid());
     return callnew_feedback_slot_;
   }
 
   bool IsMonomorphic() const { return is_monomorphic_; }
   Handle<JSFunction> target() const { return target_; }
   Handle<AllocationSite> allocation_site() const {
@@ skipping 1566 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_