[PATCH] D23988: [compiler-rt][XRay] Support tail call sleds

[Serge Rogatch via llvm-commits]

rSerge added a comment.

Debugging for me has shown that the above happens because `printf` from `fC` is also called as a tail call. So first the exit sled of `fC` is executed, and only then `printf` is jumped into. So it seems we can't do anything about this with the current approach.


https://reviews.llvm.org/D23988