Wrap block-informations when embedding them in the graph.

lib/compiler/implementation/ssa/optimize.dart

 // Copyright (c) 2011, 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.
 
 interface OptimizationPhase {
   String get name();
   void visitGraph(HGraph graph);
 }
 
 class SsaOptimizerTask extends CompilerTask {
@@ skipping 764 matching lines @@
     computeChangesFlags(graph);
     moveLoopInvariantCode(graph);
     visitBasicBlock(graph.entry, new ValueSet());
   }
 
   void moveLoopInvariantCode(HGraph graph) {
     for (int i = graph.blocks.length - 1; i >= 0; i--) {
       HBasicBlock block = graph.blocks[i];
       if (block.isLoopHeader()) {
         int changesFlags = loopChangesFlags[block.id];
-        HLoopInformation info = block.blockInformation;
+        HLoopInformation info = block.loopInformation;
         HBasicBlock last = info.getLastBackEdge();
         for (int j = block.id; j <= last.id; j++) {
           moveLoopInvariantCodeFromBlock(graph.blocks[j], block, changesFlags);
         }
       }
     }
   }
 
   void moveLoopInvariantCodeFromBlock(HBasicBlock block,
                                       HBasicBlock loopHeader,
@@ skipping 292 matching lines @@
         // the if block terminates. So any use of the instruction
         // after the join block should be changed to the new
         // instruction.
         changeUsesDominatedBy(ifUser.joinBlock, input, convertedType);
       }
       // TODO(ngeoffray): Also change uses for the then block on a HType
       // that knows it is not of a specific Type.
     }
   }
 }