Live++ is pretty much also a linker that can link "partial" DLLs against any existing module, it just invokes an ordinary linker for producing a DLL and PDB, and possibly bringing in needed .objs from archives.
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The solution he's talking about is getting rid of linkers altogether
Or if one is going to have them, making those linkers stick around as daemons with state that will inevitably f up (as mold does, for seemingly no actual good reason) is one step more pile than having them be stateless as they are now.
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I am all in favor of making linkers faster, and I like that mold is doing that, but, when I read the README, a significant fraction the discussion of how to make it go fast looks bananas to me. I was probably more triggered by the mold daemonizing thing than anything else.
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I can think of ways of parallelising compilation without some form of linker, but I think it would end up more complex than what we have now, is there a specific direction you would advocate for?
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I agree regarding statefulness vs. statelessness in general, but I also think that there's a limit to what you can do when computing something from scratch *each and every time*. IMO, a lot of efficiency is left on the table because we do the same things over and over again.
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I like to compare this to games which completely evaluate everything and the kitchen sink each and every frame vs. games making clever use of temporal coherency. But yes, the latter is more complex and introduces edge cases that you have to take care of.
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