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2017 Aug 17
3
[RFC] Injecting new element atomic memory intrinsics into MemIntrinsic class hierarchy
...Option 1) ------------- Do not add any new classes to the hierarchy. Instead, teach each class to recognize the unordered-atomic variant as belonging to the class (ex: element unordered-atomic memcpy is recognized as a MemCpyInst, MemTransferInst, and a MemIntrinsic), and add a query method like ‘isUnorderedAtomic’ that will tell you whether the underlying intrinsic is one of the element atomic variants. Alternatively, the method could be a more generic ‘getOrdering()’ that would return an AtomicOrdering; though a memory intrinsic that is required to be implemented with ordered-atomic instructions strikes...