Unrolls array initialization loop for small arrays.

runtime/vm/flow_graph_optimizer.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/flow_graph_optimizer.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 1695 matching lines @@
                                  ExternalTypedData::data_offset());
     *cursor = flow_graph()->AppendTo(*cursor,
                                      elements,
                                      NULL,
                                      FlowGraph::kValue);
     *array = elements;
   }
   return array_cid;
 }
 
+
 bool FlowGraphOptimizer::InlineGetIndexed(MethodRecognizer::Kind kind,
                                           Instruction* call,
                                           Definition* receiver,
                                           const ICData& ic_data,
                                           TargetEntryInstr** entry,
                                           Definition** last) {
   intptr_t array_cid = MethodKindToCid(kind);
   ASSERT(array_cid != kIllegalCid);
 
   Definition* array = receiver;
@@ skipping 8394 matching lines @@
 
   // Insert materializations at environment uses.
   for (intptr_t i = 0; i < exits_collector_.exits().length(); i++) {
     CreateMaterializationAt(
         exits_collector_.exits()[i], alloc, alloc->cls(), *slots);
   }
 }
 
 
 }  // namespace dart