auto remove unused function arguments from call chain

[Johan Engelen]

On Saturday, 16 November 2019 at 04:22:17 UTC, Newbie2019 wrote:
>
> when build without version DEV_DEBUG, the file and line is 
> never used.  will ldc able to auto remove it from the binary 
> code ?

In general, no. Because the function signature must be obeyed 
such that the function can be called from anywhere without 
knowing the optimizations inside of it.
If the function is internal to a module and the function is not 
exported, then yes the optimization is perhaps legal. So LTO 
might be allowed (and able) to do it, but I don't know.

-Johan