As I wrote in the blog post, we didn't take a closer look at the performance difference, and I know that "measure, don't guess" is maxim. But if I risk it, I believe there are some differences that could make a difference in performance as described in the following chapter. (This is for COFF but applicable to ELF.)

https://github.com/llvm-mirror/lld/blob/master/COFF/README.m...

We can't reach a conclusion until we add a linker script support to lld, though.