[clang] [llvm] [DebugInfo] Emit DW_AT_bit_size for _BitInt types and others (PR #164372)

[Orlando Cazalet-Hyams via cfe-commits]

OCHyams wrote:

> I'd be fine with landing this without the endian-ness issue resolved. Perhaps you could add a note about in the commit message, and add TODOs about potentially emitting the `DW_AT_data_bit_offset` attribute for big-endian targets at the two points that the `DW_AT_bit_size` attribute is emitted?

* I've removed the `DwarfCompileUnit` call site as that was only used by types referenced DIExpressions by DW_OP_LLVM_convert (not coming from DIBasicTypes).
* Added a TODO to the `DwarfUnit` mentioning the _data_bit_offset
* Changed the commit message (PR description).

How does this look?

What would you like me to put as your name/email for co-authorship? (this was based on your patch and now looks more or less exactly like it!)


https://github.com/llvm/llvm-project/pull/164372