Support inlining function containing throw in the optimizer.

runtime/vm/intermediate_language.h

 // 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.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 780 matching lines @@
   virtual Instruction* Canonicalize(FlowGraph* flow_graph);
 
   // Insert this instruction before 'next' after use lists are computed.
   // Instructions cannot be inserted before a block entry or any other
   // instruction without a previous instruction.
   void InsertBefore(Instruction* next) { InsertAfter(next->previous()); }
 
   // Insert this instruction after 'prev' after use lists are computed.
   void InsertAfter(Instruction* prev);
 
+  // Append an instruction to the current one and return the tail.
+  // This function updated def-use chains of the newly appended
+  // instruction.
+  Instruction* AppendInstruction(Instruction* tail);
+
   // Returns true if CSE and LICM are allowed for this instruction.
   virtual bool AllowsCSE() const {
     return false;
   }
 
   // Returns set of effects created by this instruction.
   virtual EffectSet Effects() const = 0;
 
   // Returns set of effects that affect this instruction.
   virtual EffectSet Dependencies() const {
@@ skipping 5594 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_