> On Nov 19, 2019, at 10:18 AM, Aleksei Voitylov <aleksei.voity...@bell-sw.com> > wrote: > > Kim, > > you are right, to play it safe we need to -fno-tree-pre all relevant > bool occurrances. I'll get back with an updated webrev when testing is > finished.
I think just sprinkling the build system with -fno-tree-pre to address this doesn’t scale in the face of people writing new code. I think we need to find a way to write CmpxchgByteUsingInt in such a way that it doesn’t tickle this bug, or forbid byte-sized cmpxchg (which would be painful), or provide some entirely other implementation approach.
