[PATCH] D42509: [LivePhysRegs] Preserve pristine registers in blocks with no successors.

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

A noreturn call doesn't need to have the callers callee saved registers restored. I also think this fact shouldn't change with throwing calls (I assume the unwinding tables would contain information on how to restore the callee saves in this case?).

So I'm not convinced yet this change is correct.


Repository:
  rL LLVM

https://reviews.llvm.org/D42509