This is a CL in a string that aims to replace the Tagged loads and stores
nodes that are still being created.

Also took the liberty of cleaning up part of wasm-compiler. There were some
cases where we could have been using the existing macros, but weren't.

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: v8:8977, v8:7703
Change-Id: Ic6ce2f9dc9f2ad440c91c98b1f449d3c76f42fd2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1591773Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61288}