[PATCH] D49425: [MemorySSAUpdater] Update Phi operands after trivial Phi elimination

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

If the bitcode is crashing but the textual IR isn't, you're probably getting bitten by use-list ordering.  You can use the preserve-ll-uselistorder option for "opt" to preserve it in IR.


https://reviews.llvm.org/D49425