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Craig Topper
8dfb9627b7
This moves v32i16/v64i8 to a model consistent with how we treat integer types with avx1. This does change the ABI for types vXi16/vXi8 vectors larger than 512 bits to pass in multiple zmms instead of multiple ymms. We'd already hacked some code to make v64i8/v32i16 pass in zmm. Cost model is still a bit of a mess. In some place I tried to match existing behavior. But really we need to account for splitting and concating costs. Cost model for shuffles is especially pessimistic. Differential Revision: https://reviews.llvm.org/D76212