buildworld of HEAD failing under 8.1-RELEASE

[Dimitry Andric]

On May 2, 2013, at 20:28, Ryan Stone <rysto32 at gmail.com> wrote:
> I am getting the following error when trying to build HEAD on an
> 8.1-RELEASE build machine (i386 jail on an amd64 host):
> 
> ===> lib/clang/libllvmanalysis (all)
> /usr/d2/users/rstone/git/svos/lib/clang/libllvmanalysis/../../../contrib/llvm/lib/Analysis/ConstantFolding.cpp:
> In function 'llvm::Constant* llvm::ConstantFoldCall(llvm::Function*,
> llvm::ArrayRef<llvm::Constant*>, const llvm::TargetLibraryInfo*)':
> /usr/d2/users/rstone/git/svos/lib/clang/libllvmanalysis/../../../contrib/llvm/lib/Analysis/ConstantFolding.cpp:1310:
> error: 'log2' was not declared in this scope
...
> Is there anything that I can do other than build on another machine?  I
> don't control the build machines at $WORK so I'm not sure whether I can get
> them upgraded. :(

In 8.1-RELEASE, there was no log2() MFC yet.  Can you please try the attached diff?
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