[PATCH] D50248: [GuardWidening] Insert fictive guards to loop preheader to increase chances of widening

[Sanjoy Das via Phabricator via llvm-commits]

sanjoy added a comment.

Did you consider phrasing this as an "LICM" on guard?  It is a bit of a code smell in LLVM to do an operation speculatively and then undo it immediately.


https://reviews.llvm.org/D50248