Performance and stability improvements on all platforms.

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

Change-Id: Iefa73d90e6a37c31f6d38d2efa9bc566ecd15b70
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1645589
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.23@{#1}
Cr-Branched-From: 3416e1c11d73421d40bd5481ff4b3605dbb4a519-refs/heads/master@{#62000}