purescript/purescript — pull request #659 by dylex (2014-10-30 15:54:07+00:00)
Title: Fix instance detection for inliner optimization

Caused by #648. I'll try to review for similar breakages. I already caught the MagicDo one in the original PR, so should've thought of this one.

I do note that this `isOpDict` check is different than the `isEffDict` check in that it doesn't optimize within `Prelude`. I guess that doesn't matter.