[PATCH] D145698: [IR][Legalizations] Widen illegal deinterleave and interleave vectors

Caroline via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Thu Mar 9 08:59:34 PST 2023


CarolineConcatto created this revision.
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To make legalization easier, the operands and outputs have the same size for
these ISD Nodes. When legalizing the results in WidenVecRes_VECTOR_DEINTERLEAVE
the operands are legalized to the same size as the outputs.
The ISD Node has two output/results, therefore the legalizing functions update
both results/outputs.

This patch also adds widen legalization for scalable vectors in
WidenVecRes_CONCAT_VECTORS, because the ISD Node VECTOR_DEINTERLEAVE
uses CONCAT_VECTOR to widen the two concatenated input vectors.
vector. The reason for this to be in this patch is that there is no obvious
llvm-ir to test the ISD Node CONCAT_VECTORS.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D145698

Files:
  llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h
  llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/test/CodeGen/AArch64/sve-vector-deinterleave.ll
  llvm/test/CodeGen/AArch64/sve-vector-interleave.ll

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