--- a/unittests/CodeGen/MachineInstrTest.cpp	Fri Feb 16 19:10:49 2018 +0900
+++ b/unittests/CodeGen/MachineInstrTest.cpp	Sat Feb 17 09:57:20 2018 +0900
@@ -10,14 +10,16 @@
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/CodeGen/TargetFrameLowering.h"
+#include "llvm/CodeGen/TargetInstrInfo.h"
+#include "llvm/CodeGen/TargetLowering.h"
+#include "llvm/CodeGen/TargetSubtargetInfo.h"
+#include "llvm/IR/DebugInfoMetadata.h"
+#include "llvm/IR/ModuleSlotTracker.h"
 #include "llvm/Support/TargetRegistry.h"
 #include "llvm/Support/TargetSelect.h"
-#include "llvm/Target/TargetFrameLowering.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetLowering.h"
 #include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetOptions.h"
-#include "llvm/Target/TargetSubtargetInfo.h"
 #include "gtest/gtest.h"
 
 using namespace llvm;
@@ -91,8 +93,9 @@
   auto TM = createTargetMachine();
   unsigned FunctionNum = 42;
   MachineModuleInfo MMI(TM.get());
+  const TargetSubtargetInfo &STI = *TM->getSubtargetImpl(*F);
 
-  return llvm::make_unique<MachineFunction>(F, *TM, FunctionNum, MMI);
+  return llvm::make_unique<MachineFunction>(*F, *TM, STI, FunctionNum, MMI);
 }
 
 // This test makes sure that MachineInstr::isIdenticalTo handles Defs correctly
@@ -243,4 +246,25 @@
 
   checkHashAndIsEqualMatch(VD2PU, VD2PD);
 }
+
+TEST(MachineInstrPrintingTest, DebugLocPrinting) {
+  auto MF = createMachineFunction();
+
+  MCOperandInfo OpInfo{0, 0, MCOI::OPERAND_REGISTER, 0};
+  MCInstrDesc MCID = {0, 1,       1,       0,       0, 0,
+                      0, nullptr, nullptr, &OpInfo, 0, nullptr};
+
+  LLVMContext Ctx;
+  DILocation *DIL = DILocation::get(Ctx, 1, 5, (Metadata *)nullptr, nullptr);
+  DebugLoc DL(DIL);
+  MachineInstr *MI = MF->CreateMachineInstr(MCID, DL);
+  MI->addOperand(*MF, MachineOperand::CreateReg(0, /*isDef*/ true));
+
+  std::string str;
+  raw_string_ostream OS(str);
+  MI->print(OS);
+  ASSERT_TRUE(
+      StringRef(OS.str()).startswith("$noreg = UNKNOWN debug-location "));
+}
+
 } // end namespace