... for decompression because the former is not used by register
allocator and therefore always available.

Bug: v8:7703
Change-Id: I72d738be69c339444311d75c69f04c104e90bb90
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1533857Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Igor Sheludko <ishell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60390}