[PATCH] D22186: [SCCP] Add support for insertelement instructions

[Eli Friedman via llvm-commits]

eli.friedman added a comment.

I think you're misunderstanding what "isUndefined" means... it means "we haven't computed the value of this instruction yet", not "this value is an UndefValue".  See https://www.cs.rice.edu/~keith/512/2011/Lectures/L19-SCCP-1up.pdf and http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.105.4146&rep=rep1&type=pdf .


http://reviews.llvm.org/D22186