[opensource-dev] Review Request: VWR-24312: Massively duplicated objects (part 2)

[Merov Linden]

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@Aleric: OK, you convinced me on all accounts *except* for the ease of merge which I want to test myself before giving my blessing to this patch. You wouldn't be the first one be to claim that "it merges" and create some issues unwittingly. If you could post the URL of an hg repo with your patch, I'll be happy to give it a spin building on all platforms.

BTW, thanks for the super detailed comment: very interesting stuff.

- Merov


On Jan. 16, 2011, 5:53 a.m., Aleric Inglewood wrote:
> 
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> http://codereview.secondlife.com/r/81/
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> 
> (Updated Jan. 16, 2011, 5:53 a.m.)
> 
> 
> Review request for Viewer.
> 
> 
> Summary
> -------
> 
> Turns out that most of my SNOW-800 patch was included in Viewer 2 (albeit without crediting me).
> However, not everything was used and some more cleaning up was possible.
> 
> After this patch, and when compiling with optimization, there are no duplicates left
> anymore that shouldn't be there in the first place: apart from the debug stream
> iostream guard variable, there are several static variables with the same name (r, r1,
> r2, etc) but that indeed actually different symbol objects. Then there are a few
> constant POD arrays that are duplicated a hand full of times because they are
> accessed with a variable index (so optimizing them away is not possible). I left them
> like that (although defining those as extern as well would have been more consistent
> and not slower; in fact it would be faster theoretically because those arrays could
> share the same cache page then). 
> 
> 
> This addresses bug VWR-24312.
>     http://jira.secondlife.com/browse/VWR-24312
> 
> 
> Diffs
> -----
> 
>   doc/contributions.txt 422f636c3343 
>   indra/llcharacter/llanimationstates.cpp 422f636c3343 
>   indra/llcommon/llavatarconstants.h 422f636c3343 
>   indra/llcommon/lllslconstants.h 422f636c3343 
>   indra/llcommon/llmetricperformancetester.h 422f636c3343 
>   indra/llmath/llcamera.h 422f636c3343 
>   indra/llmath/llcamera.cpp 422f636c3343 
>   indra/newview/llviewerobject.cpp 422f636c3343 
>   indra/newview/llvoavatar.cpp 422f636c3343 
>   indra/newview/llvosky.h 422f636c3343 
>   indra/newview/llvosky.cpp 422f636c3343 
> 
> Diff: http://codereview.secondlife.com/r/81/diff
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> 
> Testing
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> 
> Compiled with optimization and then running readelf on the executable to find duplicated symbols.
> 
> 
> Thanks,
> 
> Aleric
> 
>

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