[PATCH] D17663: [JumpThreading] See through Cast Instructions

[Geoff Berry via llvm-commits]

gberry added subscribers: sanjoy, majnemer.
gberry added a comment.

Making ComputeValueKnownInPredecessors() recursive for any cast instruction seems like it might be a bit heavy handed.  Perhaps you could limit it to casts of phi nodes as is done with CmpInsts farther down to reduce the compile time impact?

Perhaps someone more familiar with this pass (@majnemer, @sanjoy ?) could comment on this?


Repository:
  rL LLVM

http://reviews.llvm.org/D17663