bug#65527: 30.0.50; native compilation: type optimization does not always work for `lisp' return value

[Andrea Corallo]

Ihor Radchenko <yantar92@posteo.net> writes:

> X-Debbugs-CC: acorallo@gnu.org
>
> Hi,
>
> Following up https://yhetil.org/emacs-devel/yp1pm3b7a2x.fsf@fencepost.gnu.org
>
> When we have
>
> (defun test1 ()
>   (let ((x (list 'a 'b 'c)))
>     (when (listp x) "Return value")))
>
> native compilation, fails to optimize away the `listp' return value
> despite it is known that x is a list at compile time.
>

Thanks, will look at.

  Andrea