Collect edge count profiling data and reorder basic blocks.

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/cha.h"
 #include "vm/dart_entry.h"
@@ skipping 46 matching lines @@
       MaterializeObjectInstr* mat =
           it.CurrentValue()->definition()->AsMaterializeObject();
       ASSERT(mat != NULL);
       builder->AddMaterialization(mat);
     }
   }
 }
 
 
 FlowGraphCompiler::FlowGraphCompiler(Assembler* assembler,
-                                     const FlowGraph& flow_graph,
+                                     FlowGraph* flow_graph,
                                      bool is_optimizing)
     : assembler_(assembler),
-      parsed_function_(flow_graph.parsed_function()),
-      flow_graph_(flow_graph),
-      block_order_(flow_graph.reverse_postorder()),
+      parsed_function_(flow_graph->parsed_function()),
+      flow_graph_(*flow_graph),
+      block_order_(*flow_graph->codegen_block_order(is_optimizing)),
       current_block_(NULL),
       exception_handlers_list_(NULL),
       pc_descriptors_list_(NULL),
       stackmap_table_builder_(
           is_optimizing ? new StackmapTableBuilder() : NULL),
       block_info_(block_order_.length()),
       deopt_infos_(),
       static_calls_target_table_(GrowableObjectArray::ZoneHandle(
           GrowableObjectArray::New())),
       is_optimizing_(is_optimizing),
@@ skipping 1055 matching lines @@
 
   for (int i = 0; i < len; i++) {
     sorted->Add(CidTarget(ic_data.GetReceiverClassIdAt(i),
                           &Function::ZoneHandle(ic_data.GetTargetAt(i)),
                           ic_data.GetCountAt(i)));
   }
   sorted->Sort(HighestCountFirst);
 }
 
 }  // namespace dart