Performance and stability improvements on all platforms.

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

Change-Id: I2a6fed23e4a5609a9c209a6a03b2653ab1a6a059
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1661652
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.85@{#1}
Cr-Branched-From: aad6df1dc4d82e88f3020a721b973e705dc82514-refs/heads/master@{#62196}