Said instructions look like ChangeTaggedXXXToCompressedXXX and
ChangeCompressedXXXToTaggedXXX for XXX in ("", "Pointer", "Signed").

This change only affects 64 bit architectures (both for x64 and arm64).

Also added tests for the machine operators.

Cq-Include-Trybots: luci.v8.try:v8_linux64_pointer_compression_rel_ng,v8_linux64_arm64_pointer_compression_rel_ng
Bug: v8:8977
Change-Id: I239d9de7f214424852e75b5d56996e8dfdacd400
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1526009
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60393}