Does LDC support profiling at all?

[Chris Katko]

On Saturday, 23 December 2017 at 12:23:33 UTC, Johan Engelen 
wrote:
> On Friday, 22 December 2017 at 09:52:26 UTC, Chris Katko wrote:
>> DMD can use -profile and -profile=gc. But I tried for HOURS to 
>> find the equivalent for LDC and came up with only 
>> profile-guided optimization--which I don't believe I want. 
>> Yet, if we can get PGO... where's the PROFILE itself it's 
>> using to make those decisions! :)
>
> Fine grained PGO profiling:
> -fprofile-instr-generate
> http://johanengelen.github.io/ldc/2016/07/15/Profile-Guided-Optimization-with-LDC.html
>
> Function entry/exit profiling:
> -finstrument-functions
> https://github.com/ldc-developers/ldc/issues/1839
> https://www.youtube.com/watch?v=LNav5qvyK7I
>
> I suspect it is not too much effort to add DMD's -profile and 
> -profile=gc to LDC, but noone has done it yet.
>
> Another thing that is relatively easy to add to LDC: 
> https://llvm.org/docs/XRay.html
>
> -Johan

Wow, thanks guys! I didn't realize I'd get so much information so 
quickly here on the forums. The documentation online for LDC is 
very sparse and confusing. After spending plenty of attempts, I 
went out of my way to install DMD just to get profiling because I 
couldn't figure it out with LDC.

It would probably be really helpful to get a clear Wiki guide for 
this information LDC. I'll write it myself if necessary once I 
try your recommendations and test them out.