[PATCH] D104750: [LV] Support Interleaved Store Group With Gaps

[Dorit Nuzman via Phabricator via llvm-commits]

dorit created this revision.
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Teach LV to use masked-store to support interleave-store-group with gaps (instead of scatters/scalarization).

The symmetric case of using masked-load to support interleaved-load-group with gaps was introduced a while ago, by https://reviews.llvm.org/D53668; 
This patch completes the store-scenario leftover from D53668 <https://reviews.llvm.org/D53668>, and solves PR50566.


https://reviews.llvm.org/D104750

Files:
  llvm/include/llvm/Analysis/VectorUtils.h
  llvm/include/llvm/CodeGen/BasicTTIImpl.h
  llvm/lib/Analysis/VectorUtils.cpp
  llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
  llvm/test/Transforms/LoopVectorize/X86/x86-interleaved-store-accesses-with-gaps.ll
  llvm/test/Transforms/LoopVectorize/interleaved-accesses-masked-group.ll

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