[llvm] r255787 - [SystemZ] Sort relocs to avoid code corruption by linker optimization

[Ulrich Weigand via llvm-commits]

Rafael Espíndola <rafael.espindola at gmail.com> wrote on 17.12.2015 17:28:52:

> > What gas does on s390x is to sort relocs for data sections (which is
> > required at least for .eh_frame as I understand), but does not sort
> > relocs for code sections.
>
> But those are also create in the correct order.

Actually, I think in the binutils case the problem was not really
assembling a single file with gas, but combining multiple object
files with ld -r.  It's just that with binutils, those both run
through the same bfd backend that does the actual sort.  Here's
the bugzilla describing the ld -r issue:
https://sourceware.org/bugzilla/show_bug.cgi?id=17666

Bye,
Ulrich
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