VM [KERNEL] Use simpleInstanceOf in kernel.

runtime/vm/flow_graph_builder.cc

 // 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.
 
 #include "vm/flow_graph_builder.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/ast_printer.h"
 #include "vm/bit_vector.h"
 #include "vm/compiler.h"
@@ skipping 1469 matching lines @@
                                                 Value* value,
                                                 const AbstractType& dst_type,
                                                 const String& dst_name) {
   if (CanSkipTypeCheck(token_pos, value, dst_type, dst_name)) {
     return value;
   }
   return Bind(BuildAssertAssignable(token_pos, value, dst_type, dst_name));
 }
 
 
-static bool simpleInstanceOfType(const AbstractType& type) {
-  // Bail if the type is still uninstantiated at compile time.
-  if (!type.IsInstantiated()) return false;
-
-  // Bail if the type is a function or a Dart Function type.
-  if (type.IsFunctionType() || type.IsDartFunctionType()) return false;
-
-  ASSERT(type.HasResolvedTypeClass());
-  const Class& type_class = Class::Handle(type.type_class());
-  // Bail if the type has any type parameters.
-  if (type_class.IsGeneric()) return false;
-
-  // Finally a simple class for instance of checking.
-  return true;
-}
-
-
 void EffectGraphVisitor::BuildTypeTest(ComparisonNode* node) {
   ASSERT(Token::IsTypeTestOperator(node->kind()));
   const AbstractType& type = node->right()->AsTypeNode()->type();
   ASSERT(type.IsFinalized() && !type.IsMalformedOrMalbounded());
   const bool negate_result = (node->kind() == Token::kISNOT);
   // All objects are instances of type T if Object type is a subtype of type T.
   const Type& object_type = Type::Handle(Z, Type::ObjectType());
   if (type.IsInstantiated() &&
       object_type.IsSubtypeOf(type, NULL, NULL, Heap::kOld)) {
     // Must evaluate left side.
@@ skipping 2838 matching lines @@
       graph_entry_->PruneUnreachable(graph_entry_, NULL, osr_id_, block_marks);
   ASSERT(found);
 }
 
 
 void FlowGraphBuilder::Bailout(const char* reason) const {
   parsed_function_.Bailout("FlowGraphBuilder", reason);
 }
 
 }  // namespace dart