-- These PrimOps turn into double casts

narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
narrowOp Narrow8IntOp   = Just (MO_SS_Conv, W8)
narrowOp :: PrimOp -> Maybe (Width -> Width -> MachOp, Width)
narrowOp Narrow8IntOp   = Just (MO_SS_Conv, W8)
narrowOp Narrow8IntOp   = Just (MO_SS_Conv, W8)