Performance and stability improvements on all platforms.

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

Change-Id: I7dd42f72db89de549243c7936b88d413740ceafa
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1553002
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.5.190@{#1}
Cr-Branched-From: 5128ca0fd7905fc1d740092d2f30c8d3a1641ade-refs/heads/master@{#60632}