[PATCH] D86548: [SVE][CodeGen] Legalisation of truncate for scalable vectors

[Kerry McLaughlin via Phabricator via llvm-commits]

kmclaughlin updated this revision to Diff 289976.
kmclaughlin marked 4 inline comments as done.
kmclaughlin edited the summary of this revision.
kmclaughlin added a comment.

- Removed the restriction from PromoteIntOp_EXTRACT_SUBVECTOR which prevented concatenating more than 2 scalable vectors
- Added a case to PerformDAGCombine for UNPKHI/LO which combines the following: `unpk(undef) -> undef` & `unpk(uzp1(x)) -> x`


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D86548/new/

https://reviews.llvm.org/D86548

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/test/CodeGen/AArch64/sve-split-trunc.ll

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