[patch] Add an if-exists-then-else spec function

[Armin Brauns]

On 01/10/2020 18.04, Olivier Hainque wrote:
> Hello,
>
> This patch is a proposal to add an if-exists-then-else
> builtin spec function, which tests for the existence of
> a file and returns one or the other of the following
> arguments depending on the result of the test.
>
Hello,

could you please make sure to update the documentation around gcc/doc/invoke.texi:31574 accordingly? There's already a pending patch to make it more complete at https://gcc.gnu.org/pipermail/gcc-patches/2020-September/553321.html, but there shouldn't be any major conflicts between the two.

Regards,

Armin