[PATCH] D101167: [AArch64][SVE] Convert svdup(vec, SV_VL1, elm) to insertelement(vec, elm, 0)

[Bradley Smith via Phabricator via llvm-commits]

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By converting the SVE intrinsic to a normal LLVM insertelement we give
the code generator a better chance to remove transitions between GPRs
and VPRs

This is done in SVEIntrinsicsOpts rather than InstCombine since we want
to perform this after any sve.convert.{to,from}.svbool intrinsics have
been optimized.

Co-authored-by: Paul Walker <paul.walker at arm.com>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D101167

Files:
  llvm/lib/Target/AArch64/SVEIntrinsicOpts.cpp
  llvm/test/CodeGen/AArch64/sve-intrinsic-opts-dup.ll

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