Performance and stability improvements on all platforms.

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

Change-Id: I4aeb1f2e066bcf4c24380d3d0d9acb7bd29018f5
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1679146
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.157@{#1}
Cr-Branched-From: b9ea69544e801d51c4c9a296196c862a0575999d-refs/heads/master@{#62412}