tree f87b5ff024b8f9124dfcdda3bd4ab32726d66b61
parent 88f38e9b4e9ba0aca3d6fd4823be3a7226c87f33
author Hiroshi Yamauchi <yamauchi@google.com> 1455744599 -0800
committer Hiroshi Yamauchi <yamauchi@google.com> 1455840474 -0800

Disable read barriers in GC VisitReferences calls.

It's safe to disable read barriers in the CC collector's
VisitReferences calls. It speeds up the collector by some amount,
eg. Ritzperf EAAC GC time on N5 decreases by ~4.2%.

This is based on Mathieu Chartier's idea.

Bug: 12687968

Change-Id: I884dee7018f92761fad54269f4cd01db4fa82f2a