Use one offsets table per generated irregexp matching function.

runtime/vm/regexp_assembler.h

 // Copyright (c) 2014, 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_REGEXP_ASSEMBLER_H_
 #define VM_REGEXP_ASSEMBLER_H_
 
 #include "vm/assembler.h"
 #include "vm/intermediate_language.h"
 #include "vm/object.h"
@@ skipping 315 matching lines @@
   virtual void ClearRegisters(intptr_t reg_from, intptr_t reg_to);
   virtual void WriteStackPointerToRegister(intptr_t reg);
 
   virtual void PrintBlocks();
 
   GraphEntryInstr* graph_entry() const { return entry_block_; }
 
   intptr_t num_stack_locals() const { return local_id_.Count(); }
   intptr_t num_blocks() const { return block_id_.Count(); }
 
-  // A table mapping block ids to block offsets, used to look up offsets
-  // for indirect goto instructions.
-  void FinalizeBlockOffsetTable();
+  // Fill in the table mapping block ids to block offsets. Used to
+  // look up offsets for the computed indirect-goto instructions.
+  static void FinalizeBlockOffsetTable(Isolate* isolate,
+                                       GraphEntryInstr* graph);
 
   // Fill in indirect goto successors.
   void FinalizeIndirectGotos();
 
  private:
   // Generate the contents of preset blocks. The entry block is the entry point
   // of the generated code.
   void GenerateEntryBlock();
   // Performs backtracking, i.e. popping an offset from the stack and doing
   // an indirect goto.
@@ skipping 274 matching lines @@
   IdAllocator temp_id_;
   IdAllocator arg_id_;
   IdAllocator local_id_;
   IdAllocator indirect_id_;
 };
 
 
 }  // namespace dart
 
 #endif  // VM_REGEXP_ASSEMBLER_H_