Using lnt to track lld performance

[Rafael Espíndola via llvm-commits]

>> * Make the directory structure uniform. What I am currently prototyping
>>   is that each program is its own directory and it can have multiple
>>   response*.txt files. Each response file is an independent test. The
>>   reason for allowing multiple response files is to allow for variants:
>>   * response.txt
>>   * response-icf.txt
>>   * response-gc.txt
>
>
> One thing I'd like to make sure is to be able to run these response files
> with gold. Last time I tried, I tried something like

Newer lld response files will have --chroot, but I agree that editing
them to not need that is a good thing for a benchmark. Do send me a
patch to any response file that you see is not working.

Cheers,
Rafael