[cPerf] LNT error on LLD bot

[Kristof Beyls via llvm-commits]

> On 20 Apr 2017, at 18:09, Renato Golin <renato.golin at linaro.org> wrote:
> 
> Now I remember why we don't have GCC on that machine...
> 
> http://lab.llvm.org:8011/builders/clang-cmake-aarch64-lld/builds/1100/steps/cmake%20stage%201/logs/stdio
> 
> CMake Error at cmake/modules/HandleLLVMOptions.cmake:189 (message):
>  Host compiler does not support '-fuse-ld=lld'
> 
> We may need to re-think this strategy, but before that, we need to
> revert whatever made it break, even if that wasn't the real thing, to
> get the bots green again.

I think what made it break in this way is installing gcc/g++.
Reverting the commit that broke the bot in a different way initially won't make the bot pass again, as gcc/g++ will still be installed.
I'm assuming that the bot will be fine without gcc/g++ installed, as it was fine before without having it installed.
Probably it's only needed when something changes in lnt/lnt/testing/profile/cPerf.cpp.
Of course after uninstalling gcc/g++, this will break again once anyone makes another change to cPerf.ccp.
I don't expect any in the near future, but you never know.

Thanks,

Kristof