[llvm] [DWARFYAML] Add support for v5 debug_line entry formats (PR #191358)

[James Henderson via llvm-commits]

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@@ -20,6 +20,8 @@ DWARF:
       LineBase:            1
       LineRange:           14
       OpcodeBase:          13
+      DirectoryEntryFormat:
+      FileNameEntryFormat:
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jh7370 wrote:

I think my confusion mostly stems from it being non-obvious that a specified field with an unspecified value is equivalent to specifying 0. I'd actually expect it to be illegal syntax!

https://github.com/llvm/llvm-project/pull/191358