[PATCH] D110531: [AArch64][SVE] Perform FP_EXTEND combine on legal types to fold extend into load

[Bradley Smith via Phabricator via llvm-commits]

bsmith created this revision.
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The FP_EXTEND combine done to remove extra EXTRACT_SUBVECTORs can also
be done on legal types. In this case there are no EXTRACT_SUBVECTORs
involved, but as a side effect we will end up folding the UUNPKLO generated
by the FP_EXTEND lowering into the load feeding it.

This is a very specific fix that will likely be temporary until a more
general approach is decided upon.

Depends on D110237 <https://reviews.llvm.org/D110237>


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D110531

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

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