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.
