Support for unboxed 64-bit integer bitwise operations and equality on ia32.

runtime/vm/flow_graph_compiler_x64.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_X64_H_
 #define VM_FLOW_GRAPH_COMPILER_X64_H_
 
 #ifndef VM_FLOW_GRAPH_COMPILER_H_
 #error Include flow_graph_compiler.h instead of flow_graph_compiler_x64.h.
 #endif
@@ skipping 14 matching lines @@
   };
 
  public:
   FlowGraphCompiler(Assembler* assembler,
                     const FlowGraph& flow_graph,
                     bool is_optimizing,
                     bool is_leaf);
 
   ~FlowGraphCompiler();
 
+  // x64 does not support unboxed mints.
+  static bool SupportsUnboxedMints() { return false; }
+
   // Accessors.
   Assembler* assembler() const { return assembler_; }
   const ParsedFunction& parsed_function() const { return parsed_function_; }
   const GrowableArray<BlockEntryInstr*>& block_order() const {
     return block_order_;
   }
   DescriptorList* pc_descriptors_list() const {
     return pc_descriptors_list_;
   }
   const GrowableObjectArray& object_table() {
@@ skipping 274 matching lines @@
   // that should be used when deoptimizing we store it in this variable.
   // In future AddDeoptStub should be moved out of the instruction template.
   Environment* pending_deoptimization_env_;
 
   DISALLOW_COPY_AND_ASSIGN(FlowGraphCompiler);
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_COMPILER_X64_H_