Index: llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
===================================================================
--- llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
+++ llvm/lib/CodeGen/GlobalISel/InstructionSelect.cpp
@@ -216,7 +216,7 @@
   if (MF.size() != NumBlocks) {
     MachineOptimizationRemarkMissed R("gisel-select", "GISelFailure",
                                       MF.getFunction().getSubprogram(),
-                                      /*MBB=*/nullptr);
+                                      &MF.front());
     R << "inserting blocks is not supported yet";
     reportGISelFailure(MF, TPC, MORE, R);
     return false;
Index: llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
===================================================================
--- llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
+++ llvm/lib/CodeGen/GlobalISel/Legalizer.cpp
@@ -321,7 +321,7 @@
   if (MF.size() != NumBlocks) {
     MachineOptimizationRemarkMissed R("gisel-legalize", "GISelFailure",
                                       MF.getFunction().getSubprogram(),
-                                      /*MBB=*/nullptr);
+                                      &MF.front());
     R << "inserting blocks is not supported yet";
     reportGISelFailure(MF, TPC, MORE, R);
     return false;