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It's an idea been thrown around in a few different threads (including Rafael's recent http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20141201/247285.html and Chandler's http://llvm.org/viewvc/llvm-project?rev=226781&view=rev ) so I'm putting up my hand to volunteer to do the work & interested in getting a bit more feedback, thoughts on best approaches, timing,