[regexp] Port RegExp.prototype.exec to TurboFan

src/contexts.h

Index: src/contexts.h
diff --git a/src/contexts.h b/src/contexts.h
index 6619d118ae409efb68e04adeb7d93cf9f56c1fc3..3f2540f3fea196ec70223253df226626d9c17a2b 100644
--- a/src/contexts.h
+++ b/src/contexts.h
@@ -96,6 +96,7 @@ enum ContextLookupFlags {
   V(PROMISE_RESOLVE_INDEX, JSFunction, promise_resolve)                   \
   V(PROMISE_THEN_INDEX, JSFunction, promise_then)                         \
   V(RANGE_ERROR_FUNCTION_INDEX, JSFunction, range_error_function)         \
+  V(REGEXP_LAST_MATCH_INFO_INDEX, JSObject, regexp_last_match_info)       \
   V(REJECT_PROMISE_NO_DEBUG_EVENT_INDEX, JSFunction,                      \
     reject_promise_no_debug_event)                                        \
   V(REFERENCE_ERROR_FUNCTION_INDEX, JSFunction, reference_error_function) \