[PATCH] [lld][core] sectionGroup support.

[Rafael Espíndola]

On 27 February 2014 23:37, Shankar Easwaram <shankarke at gmail.com> wrote:
> This is a very good suggestion. But I am not sure on how to accomplish that as With lld each file is parsed in parallel. It might be useful to produce an error probably after atomizing them if the atoms in the group are different, also it would make sense to discard eh frame information as well for discarded sections.

You cannot produce an error if they are different. That is perfectly
legal. Consider for example linking two files compiled with different
optimization options.

With the parallel reading we would need to just record which files
have which groups during the first pass. Deterministically pick one
after we read the files, and then atomize the groups. This second
atomization stage can also happen in parallel, even for groups in the
same file since they are non overlapping. If this seems too
complicated to implement now, it is always an improvement we can try
afterwards.

Cheers,
Rafael