[PATCH] D48893: [Constants, InstCombine] allow RHS (operand 1) identity constants for binops

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

I don't think this is wrong, but does this propagation of `undef` not make the new versions more poisonous?


https://reviews.llvm.org/D48893