llvm-project

196433eb - InstCombine: Improve SimplifyDemandedFPClass min/max handling (#175382)

InstCombine: Improve SimplifyDemandedFPClass min/max handling (#175382) Refine handling of minimum/maximum and minimumnum/maximumnum. The previous folds to input were based on sign bit checks. This was too conservative with 0s. This can now consider -0 as less than or equal to +0 as appropriate, account for nsz. It additionally can handle cases like one half is known positive normal and the other subnormal.