Port 97a4b795
Port f8be9948

R=zhiguo.zhou@intel.com, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Change-Id: Id72fd94459b13713d25aefbf96fd00c88e352c85
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2169841Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#67446}