Merge changes from topic \'rr_barrier\' am: e835f3a2 am: 5cf09ba6
am: 132dbf88
* commit '132dbf88':
Store precice set of which constructors require barriers
Revert "Revert "Check if we require barrier if we did not resolve classes""
Revert "Revert "Change RequiresConstructorBarrier default to yes""
Change-Id: Ic1d7a306dd05173238b39b17966f40a1bfc7f11a