[PATCH] D148646: [AArch64] Remove dead tryMLAV64LaneV128 and tryMULLV64LaneV128 code. NFC

[Dave Green via Phabricator via llvm-commits]

dmgreen created this revision.
dmgreen added reviewers: t.p.northover, efriedma, SjoerdMeijer, jaykang10, samtebbs.
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As far as I can tell this code is never used, as the pattern recognised by checkHighLaneIndex (an duplane with insert_subvec and extract_subvec) will not be generated any more. There are no tests that change from removing it (including the clang neon tests), and it didn't appear to come up in any benchmarks I ran. There are already existing patterns for MLA with index and s/umull with index.

Removing it also prevents it from causing problems for SVE, as in #62151.


https://reviews.llvm.org/D148646

Files:
  llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp

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