Regexp caching

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index fe470c8980410ffb434a8adfd82bcaec855b282c..4fc61fad953a608f564244304a6acb5192ca47bc 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -2166,16 +2166,18 @@ ACCESSORS(JSArray, length, Object, kLengthOffset)
 
 
 ACCESSORS(JSRegExp, data, Object, kDataOffset)
-ACCESSORS(JSRegExp, type, Object, kTypeOffset)
 
 
-JSRegExp::Type JSRegExp::type_tag() {
-  return static_cast<JSRegExp::Type>(Smi::cast(type())->value());
+JSRegExp::Type JSRegExp::TypeTag() {
+  Object* data = this->data();
+  if (data->IsUndefined()) return JSRegExp::NOT_COMPILED;
+  Smi* smi = Smi::cast(FixedArray::cast(data)->get(kTagIndex));
+  return static_cast<JSRegExp::Type>(smi->value());
 }
 
 
-void JSRegExp::set_type_tag(JSRegExp::Type value) {
-  set_type(Smi::FromInt(value));
+Object* JSRegExp::DataAt(int index) {
+  return FixedArray::cast(data())->get(index);

[Kasper Lund, 2008/10/24 06:42:50]

Maybe you should add an ASSERT that data isn't undefined or that the TypeTag()
returns something not NOT_COMPILED. I know the FixedArray::cast will give you
the same, but is seems more direct.

 }