gnn@, samuel@, and domagoj@ discuss some of the issues around D compiler non-optimization. Much of this will wind up being described in the OpenDTrace Spec.
gnn@ has created a new section about CTF in the OpenDTrace Specification, and expects to have a first draft by 15 Sep 2017
samuel@ says that he wrote a script, dof.py, that is in the open source xnu releases
domagoj@ suggests pulling in lazy DOF support from XNU