Add support to handle debug info attached to an instruction.

This is not yet enabled.

llvm-svn: 83400

4 files changed, 25 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index f149f10f3b4..3a7fe0e24e8 100644
--- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -1363,12 +1363,18 @@ void AsmPrinter::processDebugLoc(const MachineInstr *MI,
       DebugLocTuple CurDLT = MF->getDebugLocTuple(DL);
       if (BeforePrintingInsn) {
         if (CurDLT.CompileUnit != 0 && PrevDLT != CurDLT) {
-          printLabel(DW->RecordSourceLine(CurDLT.Line, CurDLT.Col, 
-                                          CurDLT.CompileUnit));
-          O << '\n';
+	  unsigned L = DW->RecordSourceLine(CurDLT.Line, CurDLT.Col,
+	  				    CurDLT.CompileUnit);
+          printLabel(L);
+#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
+          DW->SetDbgScopeBeginLabels(MI, L);
+#endif
+        } else {
+#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
+          DW->SetDbgScopeEndLabels(MI, 0);
+#endif
         }
-      }
-
+      } 
       PrevDLT = CurDLT;
     }
   }
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index cd4fd768ba9..5b3f3cee39f 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -1322,7 +1322,6 @@ DbgScope *DwarfDebug::getDbgScope(MDNode *N, const MachineInstr *MI) {
     Parent->AddScope(Slot);
   else
     // First function is top level function.
-    // FIXME - Dpatel - What is FunctionDbgScope ?
     if (!FunctionDbgScope)
       FunctionDbgScope = Slot;
 
@@ -1901,6 +1900,12 @@ void DwarfDebug::BeginFunction(MachineFunction *MF) {
   if (TimePassesIsEnabled)
     DebugTimer->startTimer();
 
+#ifdef ATTACH_DEBUG_INFO_TO_AN_INSN
+  if (!ExtractScopeInformation(MF))
+    return;
+  CollectVariableInfo();
+#endif
+
   // Begin accumulating function debug information.
   MMI->BeginFunction(MF);
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfWriter.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
index bebf8e07997..0638d356854 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfWriter.cpp
@@ -119,3 +119,9 @@ unsigned DwarfWriter::RecordInlinedFnEnd(DISubprogram SP) {
   return DD->RecordInlinedFnEnd(SP);
 }
 
+void DwarfWriter::SetDbgScopeBeginLabels(const MachineInstr *MI, unsigned L) {
+  DD->SetDbgScopeEndLabels(MI, L);
+}
+void DwarfWriter::SetDbgScopeEndLabels(const MachineInstr *MI, unsigned L) {
+  DD->SetDbgScopeBeginLabels(MI, L);
+}
diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index 0bec2cf9b1f..bccff160ce9 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -425,7 +425,9 @@ bool FastISel::SelectCall(User *I) {
       if (AllocaLocation)
         MMI->setVariableDbgInfo(DI->getVariable(), AllocaLocation, FI);
     }
+#ifndef ATTACH_DEBUG_INFO_TO_AN_INSN
     DW->RecordVariable(DI->getVariable(), FI);
+#endif
     return true;
   }
   case Intrinsic::eh_exception: {