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

[Paul T Robinson via llvm-commits]

pogo59 wrote:

Just to throw out another thought on the fixed/variable point:

If LLVM used the fixed-size addr index forms, I'd expect a slight decrease in .debug_info size, because each byte of a fixed-size form can encode a larger range than the same number of bytes of LEB128. Offhand I don't recall typical index ranges of .debug_addr, which you could use to figure out whether it would matter.

I could see using addr1 for the small indexes and addrx for anything over 255. It would not reduce encoded size much, but might increase the number of fixed-size DIEs, making scans that took advantage of that more efficient.

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