[lld] [llvm] [dyndbg][LLD][ELF] Initial LLD support for dynamic debugging (PR #214188)

[Peter Smith via llvm-commits]

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@@ -3240,6 +3249,41 @@ static void postParseObjectFile(ELFFileBase *file) {
   }
 }
 
+template <class ELFT> static void linkDynamicDebug(Ctx &ctx) {
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smithp35 wrote:

I think it would be useful to have a comment summarising DynamicDebug here. I expect that many won't be familiar with it and I don't think there's much documentation we can point to.

For example:
```
Objects that support Dynamic Debugging contain an ELF Dynamic Debugging Section that embeds an unoptimized ELF file with debug information. We extract these embedded ELF files to make a consolidated unoptimized relocatable ELF file to embed into the Output.
```

https://github.com/llvm/llvm-project/pull/214188