2 Commits

Author	SHA1	Message	Date
Sanjay Patel	7903ae4720	[InstCombine] factorize left shifts of add/sub ... We do similar factorization folds in SimplifyUsingDistributiveLaws, but that drops no-wrap properties. Propagating those optimally may help solve: https://llvm.org/PR47430 The propagation is all-or-nothing for these patterns: when all 3 incoming ops have nsw or nuw, the 2 new ops should have the same no-wrap property: https://alive2.llvm.org/ce/z/Dv8wsU This also solves: https://llvm.org/PR47584	2020-09-20 12:55:24 -04:00
Sanjay Patel	1dd4c4e0a8	[InstCombine] add tests for add/sub-of-shl; NFC	2020-09-09 15:29:08 -04:00