[PATCH] D113035: [InstCombine] enhance vector bitwise select matching

Wed Nov 3 11:06:45 PDT 2021

spatel added a comment.

In D113035#3106536 <https://reviews.llvm.org/D113035#3106536>, @lebedev.ri wrote:

> Is there test coverage for the edge-case of selecting between vectors themselves? (condition is `i1`)

I'm not imagining the sequence that you are suggesting.
The condition can't be scalar i1 if the other operands are integer vectors. It has to be a vector of the same type or a bitcast from a type with at least as many bits as the other operands.

We have existing tests with bool types starting around line 367 (`@bools`). `@vec_of_bools` is at line 461 - do any of those cover it?

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  https://reviews.llvm.org/D113035/new/

https://reviews.llvm.org/D113035