[PATCH] D89489: [InterleaveAccess] Recognize Interleave loads through binary operations

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: efriedma, SjoerdMeijer, sanwou01, spatel, samtebbs.
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Herald added a project: LLVM.
dmgreen requested review of this revision.

Instcombine will currently sink identical shuffles though vector binary operations. This is probably generally useful,  but can break up the code pattern we use to represent an interleaving load group.  This patch reverses that in the InterleaveAccessPass to re-recognise the pattern of shuffles sunk past binary operations and folds them back if an interleave group can be created.


https://reviews.llvm.org/D89489

Files:
  llvm/lib/CodeGen/InterleavedAccessPass.cpp
  llvm/test/CodeGen/AArch64/vldn_shuffle.ll
  llvm/test/CodeGen/Thumb2/mve-vldshuffle.ll

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