Re: Can compiler macros make use of type declarations?

Check out Bike's compiler-macro library, specifically the `form-type` function: https://github.com/Bike/compiler-macro On Mon, Nov 6, 2017 at 3:43 PM, Chaitanya Gupta <mail@chaitanyagupta.com> wrote:

Let's say I have created a function called `FOO`:

(defun foo (x) ...)

To optimize this function, I write a compiler macro. Can I make use of type declarations that users of `FOO` might have made for the argument `X` that is passed in to it?

That is, let's say `FOO` is used like this:

(let ((a (something-that-returns-an-integer))) (declare (integer a)) (foo a))

The compiler macro for `FOO` cannot make any optimizations on the value of `A`, but can it take advantage of the fact that `A` is declared as in `INTEGER` here?

Chaitanya