[PATCH] D11648: InstCombinePHI: Partial simplification of identity operations

[David Majnemer via llvm-commits]

majnemer added a comment.

In http://reviews.llvm.org/D11648#227672, @kuhar wrote:

> I've changed the check form using isSafeToSpeculativelyExecute to simply checking for division instruction - from all the cases I deal with only this one could result in trap.


Why is it OK to hoist if the incoming block unconditionally branches or ends in a switch or indirectbr?


Repository:
  rL LLVM

http://reviews.llvm.org/D11648