Initial support for polymorphic inlining.

runtime/vm/flow_graph_builder.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_BUILDER_H_
 #define VM_FLOW_GRAPH_BUILDER_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 28 matching lines @@
 
 // An class to collect the exits from an inlined function during graph
 // construction so they can be plugged into the caller's flow graph.
 class InlineExitCollector: public ZoneAllocated {
  public:
   InlineExitCollector(FlowGraph* caller_graph, Definition* call)
       : caller_graph_(caller_graph), call_(call), exits_(4) { }
 
   void AddExit(ReturnInstr* exit);
 
+  void Union(const InlineExitCollector* other);
+
   // Before replacing a call with a graph, the outer environment needs to be
   // attached to each instruction in the callee graph and the caller graph
   // needs to have its block and instruction ID state updated.
   void PrepareGraphs(FlowGraph* callee_graph);
 
   // Inline a graph at a call site.
   //
   // Assumes the callee is in SSA with a correct dominator tree and use
   // lists.
   //
@@ skipping 420 matching lines @@
   // Output parameters.
   GrowableArray<TargetEntryInstr**> true_successor_addresses_;
   GrowableArray<TargetEntryInstr**> false_successor_addresses_;
 
   intptr_t condition_token_pos_;
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_BUILDER_H_