StgCmmPrim: Add missing MO_WriteBarrier
StgCmmPrim: Add missing MO_WriteBarrier
Test Plan: Good question
Reviewers: austin, trommler, simonmar, rrnewton
Reviewed By: simonmar
Subscribers: RyanGlScott, thomie
Differential Revision: https://phabricator.haskell.org/D2495
GHC Trac Issues: #12469
(cherry picked from commit
d40d6df74a9fca382a84709ac9bc862897fbec18)
Gbp-Pq: Name add-missing-MO_WriteBarrier