[PATCH] D97163: [GlobalISel] Implement fewerElements legalization for vector reductions.

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp:4092
+  const unsigned NumParts = SrcTy.getNumElements() / NarrowTy.getNumElements();
+  extractParts(SrcReg, NarrowTy, NumParts, SplitSrcs);
+  SmallVector<Register> PartialReductions;
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I've been trying to move away from using extractParts. Can you reframe this with extractGCDType to handle the odd cases?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D97163/new/

https://reviews.llvm.org/D97163