Port 7ec8ecce

LOG=N
R=bbudge@chromium.org, joransiu@ca.ibm.com, mbrandy@us.ibm.com, michael_dawson@ca.ibm.com
BUG=v8:4124

Review URL: https://codereview.chromium.org/1825643002

Cr-Commit-Position: refs/heads/master@{#35010}