[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 926bba5efad288cd71ecc18f9e4e254ca285c5c9..6ea36440b69055a2f603e9e67154889a6467f65e 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -7030,6 +7030,18 @@ 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();