[PATCH] D128642: [AArch64][SVE] Use SVE for VLS fcopysign for wide vectors

[David Truby via Phabricator via llvm-commits]

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Currently fcopysign for VLS vectors lowers through NEON even when the
vector width is wider than a NEON vector, causing bad codegen as the
vectors are split. This patch causes SVE to be used for these vectors
instead, giving much better codegen on wide VLS vectors.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D128642

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/sve-fixed-length-fcopysign.ll

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