[PATCH] D58063: [ARM] Sink zext/sext operands for add and sub to enable vsubl generation.

[Florian Hahn via Phabricator via llvm-commits]

fhahn created this revision.
fhahn added reviewers: SjoerdMeijer, t.p.northover, samparker, efriedma.
Herald added subscribers: hiraditya, kristof.beyls, javed.absar.
Herald added a project: LLVM.

This uses the infrastructure added in rL353152 <https://reviews.llvm.org/rL353152> to sink zext and sexts to
sub/add users, to enable vsubl/vaddl generation when NEON is available.

See https://bugs.llvm.org/show_bug.cgi?id=40025.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D58063

Files:
  llvm/lib/Target/ARM/ARMISelLowering.cpp
  llvm/lib/Target/ARM/ARMISelLowering.h
  llvm/test/Transforms/CodeGenPrepare/ARM/sink-free-instructions.ll

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