Performance and stability improvements on all platforms.

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

Change-Id: Ie4069ac2680d219bc34d574f8ca52bd914a3c9d7
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1539882
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.5.118@{#1}
Cr-Branched-From: a0c30858ffb5572bf2258732ce38a62461cb7aef-refs/heads/master@{#60467}