[PATCH] D41373: [GISel][RFC]: GlobalISel Combiner prototype

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added a comment.

One more comment: Do you have an idea how we could make sure that the combiners are making progress?
Basically, I would like we think about two cases that bit us in the past:

1. Two combines undo each others
2. Two combines keep piling up (like `expand op1 into op2 & op3` and `expand op2 into op1 & op3` would keep having the IR growing)


https://reviews.llvm.org/D41373