https://bugzilla.redhat.com/show_bug.cgi?id=1195231
--- Comment #1 from Jens Petersen petersen@redhat.com --- https://ghc.haskell.org/trac/ghc/ticket/9673 is the original bug I filed upstream in October ;)
https://github.com/lukexi/ghc-7.8-arm64 may help: though it involves using llvm-3.5 ;o) I'll try and give it a try anyway...