Fix vm code base so that it can be built for --arch=simarm (no snapshot yet).

runtime/vm/flow_graph.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_H_
 #define VM_FLOW_GRAPH_H_
 
 #include "vm/growable_array.h"
 #include "vm/parser.h"
 
 namespace dart {
 
 class BlockEntryInstr;
 class ConstantInstr;
 class Definition;
 class FlowGraphBuilder;
 class GraphEntryInstr;
 class PhiInstr;
 class ReturnInstr;
 class ValueInliningContext;
 
-class BlockIterator : public ValueObject {
+class BlockIterator {
  public:
   explicit BlockIterator(const GrowableArray<BlockEntryInstr*>& block_order)
       : block_order_(block_order), current_(0) { }
 
+  BlockIterator(const BlockIterator& other)
+      : block_order_(other.block_order_), current_(other.current_) { }
+
+#if 0
+  BlockIterator& operator=(const BlockIterator& other) {
+    block_order_ = other.block_order_;
+    current_ = other.current_;
+    return *this;
+  }
+#endif
+
   void Advance() {
     ASSERT(!Done());
     current_++;
   }
 
   bool Done() const { return current_ >= block_order_.length(); }
 
   BlockEntryInstr* Current() const { return block_order_[current_]; }
 
  private:
@@ skipping 139 matching lines @@
   GraphEntryInstr* graph_entry_;
   GrowableArray<BlockEntryInstr*> preorder_;
   GrowableArray<BlockEntryInstr*> postorder_;
   GrowableArray<BlockEntryInstr*> reverse_postorder_;
   bool invalid_dominator_tree_;
 };
 
 }  // namespace dart
 
 #endif  // VM_FLOW_GRAPH_H_