Be conservative about unordered accesses for the moment

Background: As described in, I'm working towards separating volatile and atomic in the MMO uses for atomic instructions.

In, I fixed a bug where isUnordered was returning the wrong result, but didn't account for the fact I was getting slightly ahead of myself. While both uses of isUnordered are correct (as far as I can tell), we don't have tests to demonstrate this and being aggressive gets in the way of having the removal of volatile truly be non-functional. Once D57601 lands, I will return to these call sites, revert this patch, and add the appropriate tests to show the expected behaviour.

Differential Revision:

git-svn-id: 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed