[llvm-dev] Help with setting up ARM embedded clang + lld

[Rui Ueyama via llvm-dev]

On Wed, May 3, 2017 at 3:52 AM, Renato Golin <renato.golin at linaro.org>
wrote:

> On 2 May 2017 at 23:59, Rui Ueyama <ruiu at google.com> wrote:
> > That's interesting. Usually your code wouldn't be gc'ed because your
> entire
> > code is reachable from _start.
>
> Baremetal doesn't need a _start.
>
>
> > Does your program depend on the feature that, if no -e option is given,
> the
> > linker sets the beginning of the .text section to the entry point
> address?
>
> I believe that would help, yes. But there may be linker scripts that
> can change that, so you need to be careful.
>

If you want to do GC, you still need to teach linkers GC root symbols in
some way, no? Otherwise, linkers cannot determine if a section is live or
not.
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