Cleanups.

runtime/vm/intermediate_language.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_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 2017 matching lines @@
   DECLARE_INSTRUCTION(JoinEntry)
 
   virtual intptr_t PredecessorCount() const { return predecessors_.length(); }
   virtual BlockEntryInstr* PredecessorAt(intptr_t index) const {
     return predecessors_[index];
   }
   virtual void AddPredecessor(BlockEntryInstr* predecessor) {
     predecessors_.Add(predecessor);
   }
 
+  // Returns -1 if pred is not in the list.
+  intptr_t IndexOfPredecessor(BlockEntryInstr* pred) const;
+
   ZoneGrowableArray<PhiInstr*>* phis() const { return phis_; }
 
   virtual void PrepareEntry(FlowGraphCompiler* compiler);
 
   void InsertPhi(intptr_t var_index, intptr_t var_count);
 
   intptr_t phi_count() const { return phi_count_; }
 
  private:
-  ZoneGrowableArray<BlockEntryInstr*> predecessors_;
+  GrowableArray<BlockEntryInstr*> predecessors_;
   ZoneGrowableArray<PhiInstr*>* phis_;
   intptr_t phi_count_;
 
   DISALLOW_COPY_AND_ASSIGN(JoinEntryInstr);
 };
 
 
 class TargetEntryInstr : public BlockEntryInstr {
  public:
   TargetEntryInstr()
@@ skipping 468 matching lines @@
   const GrowableArray<BlockEntryInstr*>& block_order_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_