The optimization state is a 32-bit value, so we should load it by
lw instruction instead of ld.

Change-Id: I5845341ea9b87568fda08180ed51ad1a5c0635e0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2507312Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Auto-Submit: Liu yu <liuyu@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#70879}