Performance and stability improvements on all platforms.

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

Change-Id: I7a14da509f3283df68bc8d296284c278a600fd64
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1520791
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.5.25@{#1}
Cr-Branched-From: a94d619d214ab5d0910472803b6b269c153e6414-refs/heads/master@{#60208}