...except for the initial function.

Bug: v8:7790, chromium:928202
Change-Id: I220e13d148525734d866f8aaf0c7ef8cbeccbcb2
Reviewed-on: https://chromium-review.googlesource.com/c/1451825Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#59340}