Port irregexp bytecode compiler and interpreter from V8 r24065.

runtime/vm/regexp_assembler_ir.cc

Index: runtime/vm/regexp_assembler_ir.cc
diff --git a/runtime/vm/regexp_assembler.cc b/runtime/vm/regexp_assembler_ir.cc
similarity index 99%
copy from runtime/vm/regexp_assembler.cc
copy to runtime/vm/regexp_assembler_ir.cc
index e4e3247daeb05a790613f6cbc8c109044b90fecb..6851926aede6cf78c0fffc6bc0292bb1c10fa896 100644
--- a/runtime/vm/regexp_assembler.cc
+++ b/runtime/vm/regexp_assembler_ir.cc
@@ -2,7 +2,7 @@
 // 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/regexp_assembler.h"
+#include "vm/regexp_assembler_ir.h"
 
 #include "vm/bit_vector.h"
 #include "vm/compiler.h"
@@ -67,18 +67,6 @@ void PrintUtf16(uint16_t c) {
  * during processing, and convert them to standard indexes when copying them
  * to matches_param_ on successful match.
  */
-
-RegExpMacroAssembler::RegExpMacroAssembler(Zone* zone)
-  : slow_safe_compiler_(false),
-    global_mode_(NOT_GLOBAL),
-    zone_(zone) {
-}
-
-
-RegExpMacroAssembler::~RegExpMacroAssembler() {
-}
-
-
 IRRegExpMacroAssembler::IRRegExpMacroAssembler(
     intptr_t specialization_cid,
     intptr_t capture_count,