[PATCH] D33673: [Object/RelocVisitor] - Add support for R_X86_64_DTPOFF32 relocation.

[Rafael Avila de Espindola via llvm-commits]

> And run of llvm-dwarfdump tls.o would report "error: failed to compute relocation: R_X86_64_DTPOFF32"
> error then, because such a relocation is not supported atm.
>
> R_X86_64_DTPOFF32 calculates negative offset in the TLS block.

The spec (and the lld source) suggests it computes the offset in the tls
block, so you don't need the size.

> Problem that size of TLS segment is not known
> here. The same applies for PR33173 where we use RelocVisitor as part of DWARFContextInMemory for building .gdb_index.
> TLS relocations pointing to .debug_info seems useless for index
> building purposes and we do not care about final value too.

This suggest that it might be better to not compute it at all.

BTW, why was this not failing the link?

Cheers,
Rafael