JDK-8354981 added MemBarCPUOrders around flat, atomic stores because they are mismatched and then JDK-8357474 also added them around loads. This is needed to protect loads from incorrectly floating above and in-line with what we do for mismatched Unsafe accesses in mainline (see JDK-8223923 / https://github.com/openjdk/jdk/pull/5146 for context).

JDK-8354068 added code to fold strict field loads more aggressively but skipping above mentioned MemBarCPUOrders is incorrect. I disabled it with JDK-8359345.

We should investigate if we can do better here and write corresponding IR framework tests. Also, I wonder if skipping these MemBarCPUOrder is even correct in mainline. Some quick logging that I added showed that we skip them in mainline as well.