[PATCH] D93793: [IR] Let IRBuilder's CreateVectorSplat use poison as inselt's placeholder

[Juneyoung Lee via Phabricator via cfe-commits]

aqjune added inline comments.


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Comment at: llvm/lib/IR/IRBuilder.cpp:1021
   Value *Zeros = ConstantAggregateZero::get(VectorType::get(I32Ty, EC));
   return CreateShuffleVector(V, Undef, Zeros, Name + ".splat");
 }
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nlopes wrote:
> while at it, don't you want to change this one to poison as well?
It would be great, but there are many other places that create shufflevector with undef args (InstCombineCalls, etc). Since this and related patches are big changes, I think it might be good to land these first.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D93793/new/

https://reviews.llvm.org/D93793