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ac5b42cad8
r216771 introduced a change to MemoryDependenceAnalysis that allowed it to reason about acquire/release operations. However, this change does not ensure that the acquire/release operations pair. Unfortunately, this leads to miscompiles as we won't see an acquire load as properly memory effecting. This largely reverts r216771. This fixes PR22708. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232889 91177308-0d34-0410-b5e6-96231b3b80d8