Add type testing and casting support.

runtime/vm/flow_graph_builder.cc

 // 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.
 
 #include "vm/flow_graph_builder.h"
 
 #include "vm/flags.h"
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 #include "vm/parser.h"
@@ skipping 861 matching lines @@
             parsed_function().function().ToFullyQualifiedCString());
 
   for (intptr_t i = postorder_block_entries_.length() - 1; i >= 0; --i) {
     // Print the block entry.
     Instruction* current = postorder_block_entries_[i]->Print();
     // And all the successors until an exit, branch, or a block entry.
     while ((current != NULL) && !current->IsBlockEntry()) {
       OS::Print("\n");
       current = current->Print();
     }
-    if (current != NULL && current->IsBlockEntry()) {
-      OS::Print(" goto %d", current->GetBlockNumber());
+    if ((current != NULL) && current->IsBlockEntry()) {
+      OS::Print(" goto %d", BlockEntryInstr::cast(current)->block_number());
     }
     OS::Print("\n");
   }
 }
 
 
 void FlowGraphBuilder::BuildGraph() {
   EffectGraphVisitor for_effect(this, 0);
   for_effect.AddInstruction(new TargetEntryInstr());
   parsed_function().node_sequence()->Visit(&for_effect);
   TraceBailout();
   if (!HasBailedOut() && (for_effect.entry() != NULL)) {
     // Accumulate basic block entries via postorder traversal.
     for_effect.entry()->Postorder(&postorder_block_entries_);
     // Number the blocks in reverse postorder starting with 0.
     intptr_t last_index = postorder_block_entries_.length() - 1;
     for (intptr_t i = last_index; i >= 0; --i) {
-      postorder_block_entries_[i]->SetBlockNumber(last_index - i);
+      postorder_block_entries_[i]->set_block_number(last_index - i);
     }
   }
   PrintGraph();
 }
 
 }  // namespace dart