Performance and stability improvements on all platforms.

TBR=v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com

Change-Id: If38d01f2ba335fe1e27a7dd823e909169ebb6468
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1660698
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.83@{#1}
Cr-Branched-From: d7a8170d2df2dd45b5c67d1b2632c6accdd9bb6c-refs/heads/master@{#62192}