Collect edge count profiling data and reorder basic blocks.

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 215 matching lines @@
     Label* jump_label_;
     Label block_label_;
 
     Label* fallthrough_label_;
 
     bool is_marked_;
   };
 
  public:
   FlowGraphCompiler(Assembler* assembler,
-                    const FlowGraph& flow_graph,
+                    FlowGraph* flow_graph,
                     bool is_optimizing);
 
   ~FlowGraphCompiler();
 
   static bool SupportsUnboxedMints();
 
   // Accessors.
   Assembler* assembler() const { return assembler_; }
   const ParsedFunction& parsed_function() const { return parsed_function_; }
   const GrowableArray<BlockEntryInstr*>& block_order() const {
@@ skipping 348 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_H_