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

[via llvm-commits]

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@@ -1401,6 +1409,14 @@ bool DWARFDebugLine::LineTable::lookupAddressRangeImpl(
 
   while (SeqPos != LastSeq && SeqPos->LowPC < EndAddr) {
     const DWARFDebugLine::Sequence &CurSeq = *SeqPos;
+
+    // Skip sequences that don't match our stmt_sequence offset if one was
+    // provided
+    if (StmtSequenceOffset && CurSeq.StmtSeqOffset != *StmtSequenceOffset) {
+      ++SeqPos;
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alx32 wrote:

Switched to binary search approach.

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