This allows us to reuse this optimized code sequence in Liftoff.

This is similar to the x64 implementation, except that the
macro-assembler function takes an additional scratch register.

Change-Id: Ieaa5899cd1be65abee1c6e0c0908a357777afcd9
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2610510Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71996}