[PATCH] D37076: [LICM] Allow sinking when foldable in loop

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml added a comment.

> That seems like a bug. I mean, it currently does happen (because that's how getGEPCost is implemented), but in principle getUserCost should only return TCC_Free for operations which are actually free.

If we have to guarantee a real free for TCC_FREE, this must be unexpected behaviors. I will fix this first, and we can cover all free instructions here.


https://reviews.llvm.org/D37076