Special code for equality comparison for Smi, allowing null on left or right without calling deop...

runtime/vm/opt_code_generator_ia32.h

 // Copyright (c) 2011, 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_OPT_CODE_GENERATOR_IA32_H_
 #define VM_OPT_CODE_GENERATOR_IA32_H_
 
 #ifndef VM_OPT_CODE_GENERATOR_H_
 #error Do not include opt_code_generator_ia32.h; use opt_code_generator.h.
 #endif
@@ skipping 85 matching lines @@
                           Function& target,
                           intptr_t arg_count,
                           const Array& optional_argument_names);
   void GenerateCheckedInstanceCalls(AstNode* node,
                                     AstNode* receiver,
                                     intptr_t node_id,
                                     intptr_t token_index,
                                     intptr_t num_args,
                                     const Array& optional_argument_names);
   bool GenerateSmiComparison(ComparisonNode* node);
+  void GenerateSmiEquality(ComparisonNode* node);
   bool GenerateDoubleComparison(ComparisonNode* node);
   bool GenerateEqualityComparison(ComparisonNode* node);
   void GenerateLogicalBinaryOp(BinaryOpNode* node);
   void GenerateConditionalJumps(const CodeGenInfo& nInfo, Condition condition);
   bool TryInlineInstanceCall(InstanceCallNode* node);
   bool TryInlineStaticCall(StaticCallNode* node);
 
   bool IsResultInEaxRequested(AstNode* node) const;
   bool NodeMayBeSmi(AstNode* node) const;
 
   void PrintCollectedClasses(AstNode* node);
   void TraceOpt(AstNode* node, const char* message);
   void TraceNotOpt(AstNode* node, const char* message);
 
   GrowableArray<DeoptimizationBlob*> deoptimization_blobs_;
   const Class& smi_class_;
   const Class& double_class_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OptimizingCodeGenerator);
 };
 
 }  // namespace dart
 
 
 #endif  // VM_OPT_CODE_GENERATOR_IA32_H_