[LLVMdev] LLVM profiling

[Justin Bogner]

"Naveed Ul Mustafa" <naveed.mustafa at bilkent.edu.tr> writes:
> Hi guys,
>
> I am trying to perform edge profiling using on hello.bc file by using
> following command
>
> opt -insert-edge-profiling hello.bc -o hello-edge.bc

This flag has been gone since 2013 or so. The profiling infrastructure
this was part of was removed because it was unmaintained and getting in
the way of newer PGO efforts.

There is some information about PGO with today's clang in the user manual:

  http://clang.llvm.org/docs/UsersManual.html#profile-guided-optimization

> but I get the error that option "-insert-edge-profiling" is unknown. Can
> you please help me to solve the issue. Please note that I am following the
> paper available at this link
> http://llvm.org/pubs/2010-12-Preuss-PathProfiling.pdf
>
> Thanks
>
> Naveed Ul Mustafa
>
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