refactor some `FnType` stuff to `rustc::ty::layout`#60693

Merged

bors merged 4 commits intorust-lang:masterfrom

saleemjaffer:refactor_fntype_stuff

May 16, 2019

Commits on May 10, 2019

refactor some `FnType` stuff to `rustc::ty::layout`
saleemjaffer
committed

Commits on May 14, 2019