Review Request: optimization of kicontheme

[Jaime Torres]

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http://reviewboard.kde.org/r/908/
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Review request for kdelibs.


Summary
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mBaseDir and mThemeDir are never used alone, and they were allways appened in dir() const.
Using callgrind I see that this simple patch reduces the time of KiconThemeDir::dir() const, 
when kmail renders the mail from bug 186551, from taking 4,95% to only 0,34% (in almost 5 million calls).


Diffs
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  /trunk/KDE/kdelibs/kdeui/icons/kicontheme.cpp 987707 

Diff: http://reviewboard.kde.org/r/908/diff


Testing
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valgrind --tool=callgrind --log-file=kmail.valgrind.log --dump-after=KMReaderWin::parseMsg --zero-before=KMReaderWin::parseMsg  --trace-children=yes /opt/kde4/bin/kmail --nofork


Thanks,

Jaime