[PATCH] D31345: [XRay] [compiler-rt] Unwriting FDR mode buffers when functions are short.

[Keith via Phabricator via llvm-commits]

kpw added a comment.

This doesn't handle Tail calls correctly. I made a bad assumption about the trampoline sequence.

with fA() calling fB() calling fC() the records will be
Enter fA()
Tail Exit fA()
Enter fB()
Tail Exit fB()
Enter fC()
Exit fC()

I was expecting records to come out
Enter fA()
Enter fB()
Enter fC()
Tail Exit fA()

I'm changing my code to handle the truth. Hold off on review until I post an update.


https://reviews.llvm.org/D31345