Performance and stability improvements on all platforms.

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

Change-Id: I6950a966cf1ef97e1b1c616012b1305bf721e3a3
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1652147
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.40@{#1}
Cr-Branched-From: d1b6d7221f8f996a63cd53cd1df4b9b6ee07236a-refs/heads/master@{#62073}