[PATCH] D46775: [LICM] Preserve DT and LoopInfo specifically

[Jun Bum Lim via Phabricator via llvm-commits]

junbuml added a comment.

Thanks Daniel for the review. 
I agree that ideally LICM should preserve the CFG, and this change could potentially impact the compile time. However, I think this is the safest fix at this moment without a mess of updating extra analysis passes. In current pipelines (-O3, -O2, -O1, -Oz, and -Os), I looked at -debug-pass=Executions, and didn't see any extra execution of analysis passes after this change.


https://reviews.llvm.org/D46775