Performance and stability improvements on all platforms.

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

Change-Id: I967af7644d0c3835a6c360bdd6b806d6ad601b47
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1664976
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.103@{#1}
Cr-Branched-From: 259d0acee5b13929d05ddc7d996adbb5a4b752eb-refs/heads/master@{#62255}