Did not factor out the codegen because it is short enough (1 or 2
instructions) and will unlikely be changed (for optimization reasons).

Bug: v8:11265
Change-Id: Ia79c8553ad4b3924d21f77a6064c9003dfcaeb7a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2689001
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#72665}