D compiler equivilent of "gcc -E" for debug/view template instantiation(generated) code?

[dangbinghoo]

On Friday, 30 July 2021 at 06:46:18 UTC, WebFreak001 wrote:
> On Friday, 30 July 2021 at 06:00:41 UTC, dangbinghoo wrote:

> Not sure if this is exactly what you want but there is a hidden 
> switch in dmd called `-vcg-ast` that prints out all the 
> templates instantiated.
>

but, where's these switch option documented? it seems it not 
appears in dmd --help or man dmd, or online document 
https://dlang.org/dmd-linux.html


thanks!


dbh.