Roman Lebedev 049799c311
[X86][Costmodel] getReplicationShuffleCost(): promote 1 bit-wide elements to 8 bit when have AVX512BW+AVX512VBMI
If in addition to AVX512BW (that provides `{k}<->{i8,i16}` casts and i16 shuffles),
we have AVX512VBMI, which provides i8 shuffles, we are in an optimal situation.

Reviewed By: RKSimon

Differential Revision: https://reviews.llvm.org/D114071
2021-11-19 15:58:10 +03:00
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