It will tell you what opt /LLC ghc will invoke by default.

ghc 7.8 should work with llvm 3.3/3.4

On Thursday, April 24, 2014, Daniel Fischer <daniel.is.fischer@googlemail.com> wrote:

On Thursday 24 April 2014, 14:49:18, Carter Schonwald wrote:
> What OS? Is this on a vm?

Oops, sorry. openSuSE 12.3 (64 bit), nothing virtual.

> I7-avx is the instruction family.  I5 will be ok.

Okay, then it's probably that what openSuSE calls 3.2 is not what GHC thinks
3.2 is.