On Thu, Apr 12, 2018 at 03:46:26PM +0200, Jan Hubicka wrote:
> If you make C++ inline and get the idea to use target cloning attribute on
> this,
> this will likely lead to link error if you compile multiple files because you
> turn comdat to non-comdat.
>
> For comdats this woudl effectivly need to become C++ abi extension and we
> would
> need to define comdat sections for these. Perhaps easiest way is to simply
> reject the attribute on comdats and probaby also extern functions?
I'm not really sure we can do that, various packages in the wild are already
using this.
What is the problem with comdats and multi-versioning?
The question is what comdat groups we should use for the comdat resolver and
the versioned functions, shall the ifunc symbol be the original mangling of
the method (or other comdat) and the other entrypoints just be .local
non-weak symbols inside of the same section?
Jakub
