Provide call counts for constructor calls, surface them as a vector IC.

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/assembler.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 1950 matching lines @@
 class CallNew final : public Expression {
  public:
   DECLARE_NODE_TYPE(CallNew)
 
   Expression* expression() const { return expression_; }
   ZoneList<Expression*>* arguments() const { return arguments_; }
 
   // Type feedback information.
   void AssignFeedbackVectorSlots(Isolate* isolate, FeedbackVectorSpec* spec,
                                  FeedbackVectorSlotCache* cache) override {
-    callnew_feedback_slot_ = spec->AddGeneralSlot();
+    callnew_feedback_slot_ = spec->AddConstructICSlot();
   }
 
   FeedbackVectorSlot CallNewFeedbackSlot() {
     DCHECK(!callnew_feedback_slot_.IsInvalid());
     return callnew_feedback_slot_;
   }
 
   bool IsMonomorphic() override { return is_monomorphic_; }
   Handle<JSFunction> target() const { return target_; }
   Handle<AllocationSite> allocation_site() const {
     return allocation_site_;
   }
 
   static int num_ids() { return parent_num_ids() + 1; }
-  static int feedback_slots() { return 1; }
   BailoutId ReturnId() const { return BailoutId(local_id(0)); }
 
   void set_allocation_site(Handle<AllocationSite> site) {
     allocation_site_ = site;
   }
   void set_is_monomorphic(bool monomorphic) { is_monomorphic_ = monomorphic; }
   void set_target(Handle<JSFunction> target) { target_ = target; }
   void SetKnownGlobalTarget(Handle<JSFunction> target) {
     target_ = target;
     is_monomorphic_ = true;
@@ skipping 1670 matching lines @@
   // the parser-level zone.
   Zone* parser_zone_;
   AstValueFactory* ast_value_factory_;
 };
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_