[PATCH] D59259: [AArch64] Use faddp to implement fadd reductions.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen created this revision.
sdesmalen added reviewers: nikic, aemerson, RKSimon, efriedma, spatel.
Herald added subscribers: kristof.beyls, javed.absar.

This patch custom expands legal VECREDUCE_FADD
SDNodes to benefit from pair-wise faddp instructions.


https://reviews.llvm.org/D59259

Files:
  lib/Target/AArch64/AArch64ISelLowering.cpp
  lib/Target/AArch64/AArch64ISelLowering.h
  lib/Target/AArch64/AArch64InstrInfo.td
  test/CodeGen/AArch64/aarch64-faddv.ll
  test/CodeGen/AArch64/vecreduce-fadd-legalization.ll

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