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...* Robin Morisset's work on optimisation of atomics continues. AtomicExpandPass now inserts fences itself rather than SelectionDAGBuilder. [r218329](http://reviews.llvm.org/rL218329). * LLVM's libSupport gained a type-safe alternative to `llvm::format()`. [r218463](http://reviews.llvm.org/rL218463). * llvm-vtabledump learned how to dump RTTI structures for the MS ABI. [r218498](http://reviews.llvm.org/rL218498). ## Clang commits * The `assume_aligned` function attribute is now supported. [r218500](http://reviews.llvm.org/rL218500). * The thread safety analysis documentation has seen a h...