Performance and stability improvements on all platforms.

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

Change-Id: Ie760e6ede2b59a0868c0253fce51cbd33b3f0673
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1536847
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.5.112@{#1}
Cr-Branched-From: bad7b827f02ce4445bf507c7382b47bd02d5a47e-refs/heads/master@{#60443}