[LLVMdev] [lld] supporting gnu linkonce sections in core linking (original) (raw)
Shankar Easwaran shankare at codeaurora.org
Mon Mar 31 10:26:13 PDT 2014
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Hi Nick, Bigcheese,
I wanted to add support to support .gnu.linkonce sections in the resolver.
About .gnu.linkonce sections .gnu.linkonce sections were primarily present in ELF that was used in a way to model COMDAT in early ELF implementations.
We have seen usecases of .gnu.linkonce sections used in various object files(mainly libc), and I think its much needed to support this style in lld as well.
a solution to support .gnu.linkonce in lld
I was thinking of adding a typeGnuLinkOnce and special case it in the Resolver.
Differences between .gnu.linkonce and COMDAT The only thing that I see a difference between gnu linkonce sections and COMDAT is to raise an error when there is a similar looking section with section groups.
Do you see any better design solutions here ?
Thanks
Shankar Easwaran
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