I want to ask what the status of DWARF64 in LLDB is. I can tell there's some support for it by reading the code, but it seems to have zero test coverage so it's not clear to me that anyone depends on it. For example, I know that clang and LLVM will not even generate DWARF64, so if anyone is depending on it, they must be debugging programs built with some other toolchain.
I'm looking at unifying LLDB's DWARF parser with LLVM's, and this is the biggest functional difference I can see. Certainly we can improve LLVM's support for consuming DWARF64, but it's a question of priorities. If nobody is actively depending on this, then taking a regression here could be on the table and then re-prioritizing adding back support in the future if / when we actually need it.
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