[PATCH] D138581: [AArch64][SVE] Add DAG combine for load + dup_merge_passthru -> replicating load

[Bradley Smith via Phabricator via llvm-commits]

bsmith created this revision.
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Since SVE replicating loads don't have post/pre increment addressing
modes, this is done as a DAG combine rather than an isel pattern so
that we can do this transform before post/pre increment are introduced.
As part of this, the existing replicating load patterns for splat have
been moved into this same DAG combine.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D138581

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/AArch64/AArch64InstrFormats.td
  llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
  llvm/test/CodeGen/AArch64/sve-ld1r.ll
  llvm/test/tools/llvm-mca/AArch64/A64FX/A64FX-sve-instructions.s
  llvm/test/tools/llvm-mca/AArch64/Neoverse/N2-sve-instructions.s

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