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23590
2016 Aug 17
5
AutoFDO sample profiles v. SelectInst,
On Fri, Aug 12, 2016 at 12:15 PM, Xinliang David Li via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> +dehao.
>
> There are two potential problems:
>
> 1) the branch gets eliminated in the binary that is being profiled, so
> there is no profile data
>
This seems like a fundamental problem for PGO. Maybe it is also responsible
for this bug: