This is actively under investigation. Updates as they happen.
This git commit:
Author: Sean Silva <firstname.lastname@example.org>
Date: Wed Jan 7 21:35:14 2015 +0000
[LangRef] PR22118: Hyphen is allowed in IR identifiers.
E.g. %-foo and %fo-o.
Thanks to eagle-eyed reporter Tomas Brukner.
seems to wipe out the whole git llvm trunk. What is going on?
FTR, it's only causing problems for Git. SVN looks sane.