## Allow both INLINE and INLINABLE for the same function

Sometimes you really want both. Here is a small example:

```
module T where
foo :: Num a => a -> a -> a
foo x y = x+y+1
```

```
module U where
import T
appl :: (a -> b) -> a -> b
{-# NOINLINE appl #-}
appl f x = f x
bar :: Int -> Int -> Int
bar x y = appl foo x y
```

If I mark `foo`

as `INLINE`

, then GHC generates this code for `bar`

:

```
bar1 :: Int -> Int -> Int
bar1 = foo @ Int $fNumInt
bar :: Int -> Int -> Int
bar = \ (x_aa0 :: Int) (y_aa1 :: Int) -> appl @ Int @ (Int -> Int) bar1 x_aa0 y_aa1
```

Whereas with `INLINABLE`

, we get a nice specialisation but, of course, not guarantees with respect to inlining.

In general, it seems that requiring a function to inline when it is saturated and requiring it to specialise when it isn't are two different things and shouldn't be mutually exclusive.