This is similar to the change made to IsImmLSPair in
9f7ae50a.

Change-Id: I17a7cc95661542efb5711df0639cc11ac7926702
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1971950
Commit-Queue: Joey Gouly <joey.gouly@arm.com>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/master@{#65501}