[lld] r289045 - [ELF] ifunc implementation using synthetic sections

[Rafael Avila de Espindola via llvm-commits]

> A secondary benefit is that for ARM we can move the IgotPltSection and its
> dynamic relocations to the .got and .rel.dyn as the ARM glibc expects all
> the R_*_IRELATIVE relocations to be in the .rel.dyn

Could we use .rel.dyn for all architectures and avoid some of the
checks?

Cheers,
Rafael