Performance and stability improvements on all platforms.

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

Change-Id: I912d1bc1810aae9242661aa37ffbaac106df3ff7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1504782
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.4.290@{#1}
Cr-Branched-From: c5d25ec2f80086d85c3565c47a20199302bfda59-refs/heads/master@{#60047}