[PATCH] D79452: [VectorCombine] scalarize binop of inserted elements into undef

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a comment.

In D79452#2022567 <https://reviews.llvm.org/D79452#2022567>, @spatel wrote:

> I was assuming that we don't have the same concern about vector code as the scalar code here, but we could use ConstantFolding to generate the result for each element of the output vector.


Inserting into a binop(undef, undef) constant fold makes sense as a safer option.


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