The propagation of tenuring from outer allocations to inner allocations
was blocked in pointer compression since we now had Compress nodes between
AllocateRaw and StoreField.

This was causing issues in GC. It popped up in the Octane2.1/Splay
benchmark, where we had big regressions.

This CL updates the memory optimizer so that it can use the Compress nodes
as bridges and can perform the optimization successfully. Note that the
Compress nodes only appear on the value input of the StoreField.

Cq-Include-Trybots: luci.v8.try:v8_linux64_pointer_compression_rel_ng
Cq-Include-Trybots: luci.v8.try:v8_linux64_arm64_pointer_compression_rel_ng
Bug: v8:7703, v8:9519
Change-Id: I6b0cc67955c6cc696e8c426b85c87a1794098ed0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1714650Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#62938}