Performance and stability improvements on all platforms.

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

Change-Id: Ia6bcf681c04eaaad63b5c3d990a2b2a22f420817
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1534566
Reviewed-by: v8-ci-autoroll-builder <v8-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/7.5.93@{#1}
Cr-Branched-From: 4db62d2aed2f1c288f3d915ee7d2d3f4c60f042e-refs/heads/master@{#60409}