[llvm] [llvm][DebugInfo] Encode DW_AT_object_pointer on method declarations with DW_FORM_implicit_const (PR #124790)

[Michael Buch via llvm-commits]

Michael137 wrote:

> We probably don't need the LLDB tuning conditional.

Tried with gdb and without the tuning we'd get:
```
Dwarf Error: Cannot find DIE at 0x0 referenced from DIE at 0x4d
```
when setting a breakpoint on a function with the new implicit object pointer encoding.

I'll wait for others to chime in before merging

https://github.com/llvm/llvm-project/pull/124790