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Apple's Dominative LLVM, Clang Statistics

BSD

Published on 15 August 2012 09:14 PM EDT
Written by Michael Larabel in BSD
8 Comments

After sharing GCC development statistics yesterday for this Free Software Foundation code compiler that's amassed to over seven million lines of code in 25 years, here are some development stats surrounding LLVM and the Clang C/C++ compiler.

For LLVM with GitStats the history goes back to 6 June 2001. In the 4087 days, there's been LLVM commits on 3748 of those days (i.e. 91.7% of the days sees LLVM activity in its code repository). The LLVM repository is home to 9,149 files that measures up to 888,793 lines of code for LLVM's core. This compiler infrastructure has seen commits from 246 developers.

Apple's Dominative LLVM, Clang Statistics

So far in 2012 there have been 5,090 commits. Last year to LLVM there were 10,358 commits while the high points for Mesa were in 2009 and 2010 with 12,014 and 13,263 commits, respectively.

Apple's Dominative LLVM, Clang Statistics

To no surprise, the number one contributor to LLVM is Chris Lattner. Chris started out LLVM back when at the University of Illinois at Urbana–Champaign and continues to remain involved through his work at Apple. Evan Cheng is Apple's Senior Manager for the LLVM Back-end Team. Dan Gohman, the third most common author to LLVM, is another Apple employee among many others on this top listing.

Apple's Dominative LLVM, Clang Statistics

Aside from Chris Lattner leading on the commit count, when it comes to the number of lines of code he's introduced to LLVM he is well in front.

Apple's Dominative LLVM, Clang Statistics

The most active domains contributing to LLVM aren't too surprising.

Apple's Dominative LLVM, Clang Statistics

The file count, at just above nine thousand files, has been steadily rising.

Apple's Dominative LLVM, Clang Statistics

The line count for LLVM is also steadily rising and at this rate could rise past one million lines of code in 2013.

For the popular Clang C/Objective-C/C++ compiler for LLVM, its date goes back to 11 July of 2007 and has seen commits on 97.8% of the days. Clang amounts to 6,645 lines of code and 868,881 lines of code in total. There's been 38,434 Clang commits from 170 different developers.

Apple's Dominative LLVM, Clang Statistics

Clang has seen 4,813 commits this year while in 2011 there were 7,258 commits. In 2009 there was the most commits -- 11,056 commits -- and then 8,206 commits in 2010.

Apple's Dominative LLVM, Clang Statistics

The top contributors here are Ted Kremenek, Douglas Gregor, Chris Lattner, Daniel Dunbar, and Fariborz Jahanian. Ted Kremenek is a compiler engineer at Apple.

Apple's Dominative LLVM, Clang Statistics

The developers adding the most lines of code to this LLVM C/C++ compiler.

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