Erik de Castro Lopo authored Apr 25, 2015 and Herbert Valerio Riedel committed Apr 25, 2015

The ghc-7.10 branch *only* works with llvm-3.5.

This commit is basically the ghc-7.10 branch version of
485dba86 in the master branch.

Signed-off-by: Erik de Castro Lopo <erikd@mega-nerd.com>

Differential Revision: https://phabricator.haskell.org/D856