AOT: Use a cid range check when possible to implement type tests.

runtime/vm/flow_graph_compiler.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_FLOW_GRAPH_COMPILER_H_
 #define VM_FLOW_GRAPH_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 #include "vm/code_descriptors.h"
@@ skipping 687 matching lines @@
     kTestTypeThreeArgs,
   };
 
   RawSubtypeTestCache* GenerateCallSubtypeTestStub(TypeTestStubKind test_kind,
                                                    Register instance_reg,
                                                    Register type_arguments_reg,
                                                    Register temp_reg,
                                                    Label* is_instance_lbl,
                                                    Label* is_not_instance_lbl);
 
-  // Returns true if checking against this type is a direct class id comparison.
-  bool TypeCheckAsClassEquality(const AbstractType& type);
-
   void GenerateBoolToJump(Register bool_reg, Label* is_true, Label* is_false);
 
   void CopyParameters();
 #endif  // !defined(TARGET_ARCH_DBC)
 
   void GenerateInlinedGetter(intptr_t offset);
   void GenerateInlinedSetter(intptr_t offset);
 
   // Perform a greedy local register allocation.  Consider all registers free.
   void AllocateRegistersLocally(Instruction* instr);
@@ skipping 111 matching lines @@
   const GrowableArray<const Function*>& inline_id_to_function_;
   const GrowableArray<TokenPosition>& inline_id_to_token_pos_;
   const GrowableArray<intptr_t>& caller_inline_id_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_H_