[llvm] [DebugInfo][DWARF] Utilize DW_AT_LLVM_stmt_sequence attr in line table lookups (PR #123391)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Rather than passing a DIE and then having the API query for the stmt_sequence, would it be tidier to have the caller do that work? (I imagine at the moment/prior to this patch, the line table parsing didn't have much/any knowledge of DIEs, and that might be a good thing to maintain?)

https://github.com/llvm/llvm-project/pull/123391