Performance and stability improvements on all platforms.

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

Change-Id: I3267f82fba1521ad1c20d67f202312858fa755eb
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1503552
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.4.282@{#1}
Cr-Branched-From: e00f2de6b5aaeb4a4b08e49a2b268f55a71a6923-refs/heads/master@{#60025}