diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index 454a63e674d2d..bb144480bbd48 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -634,6 +634,7 @@ LegalizerHelper::libcall(MachineInstr &MI) {
   auto &Ctx = MIRBuilder.getMF().getFunction().getContext();
 
   MIRBuilder.setInstr(MI);
+  MIRBuilder.setDebugLoc(MI.getDebugLoc());
 
   switch (MI.getOpcode()) {
   default:
@@ -731,6 +732,7 @@ LegalizerHelper::LegalizeResult LegalizerHelper::narrowScalar(MachineInstr &MI,
                                                               unsigned TypeIdx,
                                                               LLT NarrowTy) {
   MIRBuilder.setInstr(MI);
+  MIRBuilder.setDebugLoc(MI.getDebugLoc());
 
   uint64_t SizeOp0 = MRI.getType(MI.getOperand(0).getReg()).getSizeInBits();
   uint64_t NarrowSize = NarrowTy.getSizeInBits();
@@ -1596,6 +1598,7 @@ LegalizerHelper::widenScalarInsert(MachineInstr &MI, unsigned TypeIdx,
 LegalizerHelper::LegalizeResult
 LegalizerHelper::widenScalar(MachineInstr &MI, unsigned TypeIdx, LLT WideTy) {
   MIRBuilder.setInstr(MI);
+  MIRBuilder.setDebugLoc(MI.getDebugLoc());
 
   switch (MI.getOpcode()) {
   default:
@@ -2188,6 +2191,7 @@ LegalizerHelper::LegalizeResult
 LegalizerHelper::lower(MachineInstr &MI, unsigned TypeIdx, LLT Ty) {
   using namespace TargetOpcode;
   MIRBuilder.setInstr(MI);
+  MIRBuilder.setDebugLoc(MI.getDebugLoc());
 
   switch(MI.getOpcode()) {
   default:
@@ -3223,6 +3227,7 @@ LegalizerHelper::fewerElementsVector(MachineInstr &MI, unsigned TypeIdx,
   using namespace TargetOpcode;
 
   MIRBuilder.setInstr(MI);
+  MIRBuilder.setDebugLoc(MI.getDebugLoc());
   switch (MI.getOpcode()) {
   case G_IMPLICIT_DEF:
     return fewerElementsVectorImplicitDef(MI, TypeIdx, NarrowTy);