From: Pasha Tatashin <redacted>
Date: Wed, 30 Aug 2017 09:19:58 -0400

The reason I am not doing initializing stores is because they require
a membar, even if only regular stores are following (I hoped to do a
membar before first load). This is something I was thinking was not
true, but after consulting with colleagues and checking processor
manual, I verified that it is the case.

Oh yes, that's right, now I remember.