[PATCH] D40622: XOR the frame pointer with the stack cookie when protecting the stack

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

Looking around the code, I think the simplest solution would be to make `useStackGuardXorFP()` return the register that should be used or 0.


https://reviews.llvm.org/D40622