RFR(T): 8214857: "bad trailing membar" assert failure at memnode.cpp:3220
rwestrel at redhat.com
Wed Dec 5 10:58:22 UTC 2018
When going from a trailing membar to the corresponding leading membar,
if a dead end is hit (top/null control input), the logic must go back to
the last region it encountered and try its next input. Currently the
code pops all regions it encountered.
I consider this change trivial and will push it with a single review.
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