[regexp] Port test, match, and search

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index a48d7c8576dd03b1daa745ee9a6f7b1282a591b7..9bbcddf0c7daf151bbc5c8f17d40d6cc8ca2a13c 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -7031,6 +7031,18 @@ void JSRegExp::SetDataAt(int index, Object* value) {
   FixedArray::cast(data())->set(index, value);
 }
 
+void JSRegExp::SetLastIndex(int index) {
+  static const int offset =
+      kSize + JSRegExp::kLastIndexFieldIndex * kPointerSize;
+  Smi* value = Smi::FromInt(index);
+  WRITE_FIELD(this, offset, value);
+}
+
+Object* JSRegExp::LastIndex() {
+  static const int offset =
+      kSize + JSRegExp::kLastIndexFieldIndex * kPointerSize;
+  return READ_FIELD(this, offset);
+}
 
 ElementsKind JSObject::GetElementsKind() {
   ElementsKind kind = map()->elements_kind();