Performance and stability improvements on all platforms.

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

Change-Id: I03540c37a8cde7d58fdcecf385e744f345157d7c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1652117
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.7.39@{#1}
Cr-Branched-From: 6a912adb8a6fde85df25a2df7605506c5f5b4933-refs/heads/master@{#62072}