[PATCH] [lld] [ELF] Support for general dynamic TLS relocations on X86_64

[Joerg Sonnenberger]

I'm not sure this patch is the right direction. Essentially, for statically linked binaries, libc is responsible for providing the symbol. For dynamically linked binaries, libc or libdl //may// provide a definition, but it is a symbol that is explicitly known. This leads back to the main issue that lld deals badly with symbols that are known to be defined somewhere, but not necessarily explicitly. IMO it would be better to address that issue first.

http://reviews.llvm.org/D5505