vsk added a comment.
In D69743#1732967 <https://reviews.llvm.org/D69743#1732967>, @dblaikie wrote:
> What's the extra DWARF that's emitted from the backend? Is there a
> corresponding LLVM code change/test, or is the functionality there but
> dormant in this particular case? (& already running/tested in other cases,
> such as when fn1 is defined in the same CU)
The extra DWARF would look like:
DW_TAG_subprogram
DW_AT_name ("fn1")
DW_AT_declaration (true)
This clang change has no corresponding llvm logic change. The functionality to
emit a subprogram for a declaration is already present & tested in llvm, as is
the logic to use such a subprogram to create a TAG_call_site
(llvm/test/DebugInfo/X86/dwarf-callsite-related-attrs.ll is a test, and the
logic is in `DwarfDebug::constructCallSiteEntryDIEs`). That test should cover
the case where a function has no subprogram, though.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D69743/new/
https://reviews.llvm.org/D69743
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