[LLVMdev] RFC - Profile Guided Optimization in LLVM

[Xinliang David Li]

>
> After the basic profile-based transformations are working, I would like to
> add new sources of profile.  Mainly, I am thinking of implementing Auto
> FDO.
>

For those who are not familiar with what autoFDO is -- Auto FDO is
originally called Sample Based FDO. Its main author is Dehao Chen @google,
and Robert Hundt is the one of the main pushers of technology in Google.
The latest incarnation of this technology uses LBR events available on
Nehalem and above.
http://www.computer.org/csdl/trans/tc/2013/02/ttc2013020376-abs.html

Cheers,

David
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