Check DebugLoc is valid before using it.

Author: abidh

llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp

@@ -6601,25 +6601,27 @@ static Function *createOutlinedFunction(
       DICompileUnit *CU = SP->getUnit();
       DIBuilder DB(*M, true, CU);
       DebugLoc DL = Builder.getCurrentDebugLocation();
-      // TODO: We are using nullopt for arguments at the moment. This will need
-      // to be updated when debug data is being generated for variables.
-      DISubroutineType *Ty =
-          DB.createSubroutineType(DB.getOrCreateTypeArray(std::nullopt));
-      DISubprogram::DISPFlags SPFlags = DISubprogram::SPFlagDefinition |
-                                        DISubprogram::SPFlagOptimized |
-                                        DISubprogram::SPFlagLocalToUnit;
-
-      DISubprogram *OutlinedSP = DB.createFunction(
-          CU, FuncName, FuncName, SP->getFile(), DL.getLine(), Ty, DL.getLine(),
-          DINode::DIFlags::FlagArtificial, SPFlags);
-
-      // Attach subprogram to the function.
-      Func->setSubprogram(OutlinedSP);
-      // Update the CurrentDebugLocation in the builder so that right scope
-      // is used for things inside outlined function.
-      Builder.SetCurrentDebugLocation(
-          DILocation::get(Func->getContext(), DL.getLine(), DL.getCol(),
-                          OutlinedSP, DL.getInlinedAt()));
+      if (DL) {
+        // TODO: We are using nullopt for arguments at the moment. This will
+        // need to be updated when debug data is being generated for variables.
+        DISubroutineType *Ty =
+            DB.createSubroutineType(DB.getOrCreateTypeArray(std::nullopt));
+        DISubprogram::DISPFlags SPFlags = DISubprogram::SPFlagDefinition |
+                                          DISubprogram::SPFlagOptimized |
+                                          DISubprogram::SPFlagLocalToUnit;
+
+        DISubprogram *OutlinedSP = DB.createFunction(
+            CU, FuncName, FuncName, SP->getFile(), DL.getLine(), Ty,
+            DL.getLine(), DINode::DIFlags::FlagArtificial, SPFlags);
+
+        // Attach subprogram to the function.
+        Func->setSubprogram(OutlinedSP);
+        // Update the CurrentDebugLocation in the builder so that right scope
+        // is used for things inside outlined function.
+        Builder.SetCurrentDebugLocation(
+            DILocation::get(Func->getContext(), DL.getLine(), DL.getCol(),
+                            OutlinedSP, DL.getInlinedAt()));
+      }
     }
   }