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type and detect whether or not it provides an 'invalidate' member the analysis manager should use. This lets the overwhelming common case of *not* caring about custom behavior when an analysis is invalidated be the the obvious default behavior with no code written by the author of an analysis. Only when they write code specifically to handle invalidation does it get used. Both cases are actually covered by tests here. The test analysis uses the default behavior, and the proxy module analysis actually has custom behavior on invalidation that is firing correctly. (In fact, this is the analysis which was the primary motivation for having custom invalidation behavior in the first place.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195332 91177308-0d34-0410-b5e6-96231b3b80d8
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