Inline Functions

[Lutger]

Mason Green wrote:

> bearophile:
> 
> Thanks for the reply.
>  
>> A JavaVM like HotSpot is more refined than the backend of DMD, its GC is 
much more refined and more efficient, it's much better in inlining virtual 
methods, its data structures are usually better performance-tuned, etc. The 
D language is newer than Java, and it has enjoyed far less money, developers 
and users.> 
> 
> Very well put! But, do you know if there is a way to force inlining where 
I want it?  Someone mentioned to me that template mixins may work...?  I 
would rather not inline all the code by hand, as I would like to trust the 
compiler.

You could use mixins, but that won't lead to pretty code. It's useful to 
know which kinds of code can get inlined by dmd. I don't have much knowledge 
of this, but the most common things that won't get inlined are loops, 
delegates and virtual functions iirc. 
 
>> Have you profiled your D code? What has the profiling told you? Have you 
seen where you allocate memory, to move such allocations away from inner 
loops, or just reduce their number? >
> 
> No, I have not profiled the D code other than using an FPS counter... :-) 
To be honest, I'm fairly light on experience when it comes to profiling. Do 
you have any suggestions on how to make it happen?

dmd's builtin profiler can be useful. Some time ago I have written a small 
utility to help make it's output more readable: 
http://www.dsource.org/projects/scrapple/wiki/PtraceUtility