[PATCH] D114071: [X86][Costmodel] `getReplicationShuffleCost()`: promote 1 bit-wide elements to 8 bit when have AVX512BW+AVX512VBMI

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri created this revision.
lebedev.ri added a reviewer: RKSimon.
lebedev.ri added a project: LLVM.
Herald added subscribers: pengfei, hiraditya.
lebedev.ri requested review of this revision.

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.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D114071

Files:
  llvm/lib/Target/X86/X86TargetTransformInfo.cpp
  llvm/test/Analysis/CostModel/X86/shuffle-replication-i1.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D114071.387870.patch
Type: text/x-patch
Size: 139683 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20211117/107f5767/attachment-0001.bin>