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c28488b471
Handling the new min/max intrinsics is the motivation, but it turns out that we have a bunch of other intrinsics with this missing bit of analysis too. The FP min/max tests show that we are intersecting FMF, so that part should be safe too. As noted in https://llvm.org/PR46897 , there is a commutative property specifier for intrinsics, but no corresponding function attribute, and so apparently no uses of that bit. We may want to remove that next. Follow-up patches should wire up the Instruction::isCommutative() to this IntrinsicInst specialization. That requires updating callers to be aware of the more general commutative property (not just binops). Differential Revision: https://reviews.llvm.org/D86798