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

[Greg Clayton via llvm-commits]

================
@@ -913,6 +916,9 @@ Error DWARFDebugLine::LineTable::parse(
         // followed.
         EmitRow();
         State.resetRowAndSequence();
+        // Cursor now points to right after the end_sequence opcode - so points
+        // to the start of the next sequence - if one exists.
+        LineTableSeqOffset = Cursor.tell();
----------------
clayborg wrote:

We can add a `uint64_t Offset` to `DWARFDebugLine::ParsingState::resetRowAndSequence(uint64_t Offset);` And call this before the while loop.

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