.. if --enable-embedded-constant-pool (ppc-only) is not set. In this
case, the field simply doesn't exist, so we shouldn't read from it,
and definitely not write to it.

Tbr: leszeks@chromium.org
Bug: v8:11036
Change-Id: I8b2cf8cdd084f29060377790c882850bd9ec43c5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2504255Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#70830}