[PATCH] D113609: [X86][Costmodel] `getReplicationShuffleCost()`: promote 16 bit-wide elements to 32 bit when no AVX512BW

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

Can you give more examples of the bad cast costs?  trunc <32 x i32> to <32 x i8> -> https://wide.godbolt.org/z/Y3rznPEnY seems to be OK


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  https://reviews.llvm.org/D113609/new/

https://reviews.llvm.org/D113609