[PATCH] D111529: Specify Clang vector builtins.

Tue Oct 12 08:15:46 PDT 2021

craig.topper added inline comments.

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Comment at: clang/docs/LanguageExtensions.rst:552
+operation(x, y) as pairwise tree reduction to the input. The pairs are formed
+by concatenating both inputs and pairing adjacent elements.
+
----------------
fhahn wrote:
> craig.topper wrote:
> > I'm not sure I understand what is being concatenated here.
> I tried to spell it out more clearly. I'm still not sure if that spells it out as clearly as possibly and I'd appreciate any suggestions on how to improve the wording.
The input is a single vector. I'm not understanding where we get a second vector to concatenate.

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111529/new/

https://reviews.llvm.org/D111529