[lld] r230194 - [ELF] Add .gnu.linkonce support.

[Shankar Easwaran]

On 2/23/2015 12:53 PM, Rafael Espíndola wrote:
>
>>>> SHF_MERGE does not work as there are specific signatures that are used
>>> with .gnu.linkonce to store hot code too (.gnu.linkonce.t) and we also
> use
>>> TLS floating point data in gnu linkonce too.
>>>
>>> Code isn't a floating point constant :-)
>> We have more usecases of usage of .gnu.linkonce is what I meant to say :)
> That cannot use groups? The .gnu.linkonce sections are a broken historical
> artifact. It is surprising to see current tools generating them.
Our internal clang still generates .gnu.linkonce. Our customers also use 
assembly code to generate these, as its much simpler for them.

Backwards compatibility is an option that they want too. Too many usecases.

Shankar Easwaran

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