-> IO ( UniqSupply
, [NatCmmTop] -- native code
, [CLabel] -- things imported by this cmm
, Maybe [Color.RegAllocStats] -- stats for the coloring register allocator
, Maybe [Linear.RegAllocStats]) -- stats for the linear register allocators
-> IO ( UniqSupply
, [NatCmmTop] -- native code
, [CLabel] -- things imported by this cmm
, Maybe [Color.RegAllocStats] -- stats for the coloring register allocator
, Maybe [Linear.RegAllocStats]) -- stats for the linear register allocators