This is a heads-up that I am in the process of implementing the last of Jasons review comments on the dwarf2out parts of early LTO debug support. I hope to post final patches early next week after thoroughly re-testing everything.
Note that Mach-O and [X]COFF support in the simple-object machinery is still missing for the early LTO debug feature so I am going to break LTOing with DWARF debuginfo on Darwin and Windows (CCing maintainers). Mach-O support has been worked on a bit by Iain and myself but the simple-object piece is still missing. A workaround is to use stabs on these targets with LTO. DWARF part: https://gcc.gnu.org/ml/gcc-patches/2016-11/msg01023.html simple-object part: https://gcc.gnu.org/ml/gcc-patches/2016-10/msg01733.html both still apply with some fuzz. Richard.
