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This is much better than the previous manner of just using short-curcuiting booleans from: 1. A "naive" efficiency perspective: we do not have to rely on the compiler to change the short circuiting boolean operations into a switch. 2. An understanding perspective by making the implicit behavior of negative predicates explicit. 3. A maintainability perspective through the covered switch flag making it easy to know where to update code when adding new ARCInstKinds. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229906 91177308-0d34-0410-b5e6-96231b3b80d8
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