Performance and stability improvements on all platforms.

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

Change-Id: I2d397531fa4e64cdce091c538c7a5b3841d5c376
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1666375
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.107@{#1}
Cr-Branched-From: bb7bb8b78b2257152386e6b03c33f54e7bde916b-refs/heads/master@{#62266}