[llvm] [DebugInfo][DWARF] Set is_stmt on first non-line-0 instruction in BB (PR #105524)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Could you put this behind a flag or revert this for now (to see if you can find a solution that's sufficiently cautious to lower the size cost to something more acceptable) - I think the growth is a bit big to take by default? (perhaps other people have other opinions, though, in which case I'm open to that/we can take the hit if that's the prevailing opinion)


https://github.com/llvm/llvm-project/pull/105524