If a PolymorphicInstanceCall has a single target, ..

runtime/vm/intermediate_language.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 701 matching lines @@
   ZoneGrowableArray<PushArgumentInstr*>* const arguments_;
   const Array& argument_names_;
   const intptr_t checked_argument_count_;
 
   DISALLOW_COPY_AND_ASSIGN(InstanceCallComp);
 };
 
 
 class PolymorphicInstanceCallComp : public TemplateComputation<0> {
  public:
-  explicit PolymorphicInstanceCallComp(InstanceCallComp* comp)
-      : instance_call_(comp) {
+  explicit PolymorphicInstanceCallComp(InstanceCallComp* comp, bool with_checks)
+      : instance_call_(comp), with_checks_(with_checks) {
     ASSERT(instance_call_ != NULL);
   }
 
   InstanceCallComp* instance_call() const { return instance_call_; }
+  bool with_checks() const { return with_checks_; }
 
   void PrintTo(BufferFormatter* f) const;
 
   virtual intptr_t ArgumentCount() const {
     return instance_call()->ArgumentCount();
   }
 
   DECLARE_CALL_COMPUTATION(PolymorphicInstanceCall)
 
   virtual bool CanDeoptimize() const { return true; }
 
  private:
   InstanceCallComp* instance_call_;
+  const bool with_checks_;
 
   DISALLOW_COPY_AND_ASSIGN(PolymorphicInstanceCallComp);
 };
 
 
 class ComparisonComp : public TemplateComputation<2> {
  public:
   ComparisonComp(Token::Kind kind, Value* left, Value* right) : kind_(kind) {
     ASSERT(left != NULL);
     ASSERT(right != NULL);
@@ skipping 2382 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_