[PATCH] D44564: [InstSimplify] Look at the whole PHI graph when simplifying a PHI node

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added a comment.

What you've implemented (or trying to) is really the SCC algorithm from  from "Simple and Efficient
Construction of Static Single Assignment Form" at
http://compilers.cs.uni-saarland.de/papers/bbhlmz13cc.pdf

That will find the values you seek here :)
(you don't have to do the recursive simplification it does)


Repository:
  rL LLVM

https://reviews.llvm.org/D44564