[llvm] r282665 - LTO: Fix use-after-scope error.

[Mehdi Amini via llvm-commits]

> On Sep 28, 2016, at 6:28 PM, Peter Collingbourne via llvm-commits <llvm-commits at lists.llvm.org> wrote:
> 
> Author: pcc
> Date: Wed Sep 28 20:28:36 2016
> New Revision: 282665
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=282665&view=rev
> Log:
> LTO: Fix use-after-scope error.
> 
> Modified:
>    llvm/trunk/lib/LTO/LTOBackend.cpp
> 
> Modified: llvm/trunk/lib/LTO/LTOBackend.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/LTO/LTOBackend.cpp?rev=282665&r1=282664&r2=282665&view=diff
> ==============================================================================
> --- llvm/trunk/lib/LTO/LTOBackend.cpp (original)
> +++ llvm/trunk/lib/LTO/LTOBackend.cpp Wed Sep 28 20:28:36 2016
> @@ -253,6 +253,7 @@ void splitCodeGen(Config &C, TargetMachi
>             std::move(BC), ThreadCount++);
>       },
>       false);
> +  CodegenThreadPool.wait();

I don’t understand this change, and the commit message does not help here.

Can you add a comment in the code clarifying what’s this doing?

Thanks,

— 
Mehdi