Port irregexp bytecode compiler and interpreter from V8 r24065.

runtime/vm/regexp_interpreter.h

Index: runtime/vm/regexp_interpreter.h
diff --git a/runtime/vm/regexp_interpreter.h b/runtime/vm/regexp_interpreter.h
new file mode 100644
index 0000000000000000000000000000000000000000..7fae193cb5c97787e7f148a2e6162ef4d5e2eda3
--- /dev/null
+++ b/runtime/vm/regexp_interpreter.h
@@ -0,0 +1,31 @@
+// 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.
+
+// A simple interpreter for the Irregexp byte code.
+
+#ifndef VM_REGEXP_INTERPRETER_H_
+#define VM_REGEXP_INTERPRETER_H_
+
+#include "vm/object.h"
+
+namespace dart {
+
+class IrregexpInterpreter {
+ public:
+  enum IrregexpResult {
+    RE_FAILURE = 0,
+    RE_SUCCESS = 1,
+    RE_EXCEPTION = -1
+  };
+
+  static IrregexpResult Match(const TypedData& bytecode,
+                              const String& subject,
+                              int32_t* captures,
+                              intptr_t start_position,
+                              Zone* zone);
+};
+
+}  // namespace dart
+
+#endif  // VM_REGEXP_INTERPRETER_H_