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19d18aa6de
It turns out that too many passes are relying on alias analysis results for control dependencies. Until we fix that by introducing a more accurate modelling of control dependencies, special case assume in MemorySSA instead. Also introduce tests to ensure we don't regress the FunctionAttrs or LICM passes. Differential Revision: http://reviews.llvm.org/D20658 llvm-svn: 270823