Performance and stability improvements on all platforms.

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

Change-Id: Ied7ed4d2d19a3bf99b2e25cab6f8b8bbcb0cb17b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1521444
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.5.36@{#1}
Cr-Branched-From: 1cb390b8750d6b0d08a59c0a18049c66aed5b5ed-refs/heads/master@{#60225}