Do everything in Java…

H. S. Teoh via Digitalmars-d digitalmars-d at puremagic.com
Tue Dec 9 11:15:25 PST 2014


On Tue, Dec 09, 2014 at 10:08:35PM +0300, Dmitry Olshansky via Digitalmars-d wrote:
> 09-Dec-2014 20:54, H. S. Teoh via Digitalmars-d пишет:
> >On Tue, Dec 09, 2014 at 07:16:56PM +0300, Dmitry Olshansky via Digitalmars-d wrote:
> >>08-Dec-2014 18:18, H. S. Teoh via Digitalmars-d пишет:
[...]
> >>>Yeah, I find in my own experience that gdc -O3 tends to produce
> >>>code that's consistently ~20% faster than dmd -O, especially in
> >>>compute-intensive code.
> >>
> >>And that's not nearly enough. Also both LDC & GDC often can't inline
> >>many functions from phobos due to separate compilation.
> >[...]
> >
> >Really? Most of the Phobos function I use are templates, so inlining
> >shouldn't be a problem, should it? Besides, gdc is far better at
> >inlining that dmd ever was, though of course there are some
> >constructs that the front-end doesn't inline, and the backend doesn't
> >have enough info to do so. This is an area that should be improved.
> >
> 
> std.ascii.isWhite ... and there are plenty of things our templates
> inevitably unfold to. I mean come on phobos library is big pile of
> object code, it can't be all templates.
> 
> Last time I checked if you copy-paste isWhite it to your source code
> it gets much faster then std one because of inlining.
[...]

Hmm. Would it help to change isWhite into a template function?


T

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