[llvm] [DebugInfo][DWARF] Emit Per-Function Line Table Offsets and End Sequences (PR #110192)

[Adrian Prantl via llvm-commits]

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@@ -527,6 +527,14 @@ DIE &DwarfCompileUnit::updateSubprogramScopeDIE(const DISubprogram *SP) {
           *DD->getCurrentFunction()))
     addFlag(*SPDie, dwarf::DW_AT_APPLE_omit_frame_ptr);
 
+  if (Asm->OutStreamer->getGenerateFuncLineTableOffsets() &&
+      Asm->OutStreamer->getCurrentFuncFirstLineStreamSym()) {
+    addSectionLabel(
+        *SPDie, dwarf::DW_AT_LLVM_stmt_sequence,
+        Asm->OutStreamer->getCurrentFuncFirstLineStreamSym(),
+        Asm->getObjFileLowering().getDwarfLineSection()->getBeginSymbol());
+  }
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adrian-prantl wrote:

Sorry, I missed this when you pinged me originally.
There is no good reason for `-fcas-friendly-debug-info` to live downstream so we should try to unify both implementations.
@rastogishubham Can you take a look at both patches and see if we could rebase `-fcas-friendly-debug-info` on top of this?

https://github.com/llvm/llvm-project/pull/110192