Re: "ld -r" on mixed IR/non-IR objects (

[Ian Lance Taylor <iant at google dot com>]

"H.J. Lu" <hjl.tools@gmail.com> writes:

> On Wed, Dec 15, 2010 at 5:23 PM, Ian Lance Taylor <iant@google.com> wrote:
>> On Thu, Dec 9, 2010 at 6:29 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
>>
>>> The initial implementation of my proposal is available on hjl/lto-mixed
>>> branch at
>>>
>>> http://git.kernel.org/?p=devel/binutils/hjl/x86.git;a=summary
>>
>> I don't know how to separate this idea from the other work on that branch.
>
> It is implemented on top of 2 stage linking infrastructure.

Yes, which makes it hard to separate.  The idea is distinct from 2 stage
linking, as far as I can tell.  I'm sure you saw my alternative proposal
to 2 stage linking.


> Linker knows nothing about the magic names.
>
> * Linker action:
>   o Classify each input object file:
>     * If there is a ".gnu_object_only" section, it is a mixed object file.
>     * If there is a IR section, it is an IR object file.
>
> Linker checks if an object is claimed by the plugin. If yes,
> it has an IR section.  Otherwise, it has no IR.
>
>     * Otherwise, it is a non-IR object file.

Thanks for the clarification.  I will try again to understand the
proposal.

Ian