[llvm] [DebugInfo][DWARF] Emit DW_AT_abstract_origin for concrete/inlined DW_TAG_lexical_blocks (PR #136205)

[David Blaikie via llvm-commits]

dwblaikie wrote:

I think this is the right direction, and I'm not sure what we'll do about it if we have to do anything, but... could you measure the size impact of this change? (use Bloaty's comparison mode to compare, say, a Release built clang built with a compiler with/without this change)

https://github.com/llvm/llvm-project/pull/136205