Index: include/llvm/Transforms/Utils/UnrollLoop.h
===================================================================
--- include/llvm/Transforms/Utils/UnrollLoop.h
+++ include/llvm/Transforms/Utils/UnrollLoop.h
@@ -69,7 +69,6 @@
                                 LoopInfo *LI,
                                 ScalarEvolution *SE, DominatorTree *DT,
                                 AssumptionCache *AC,
-                                OptimizationRemarkEmitter *ORE,
                                 bool PreserveLCSSA);
 
 void computePeelCount(Loop *L, unsigned LoopSize,
Index: lib/Transforms/Utils/LoopUnroll.cpp
===================================================================
--- lib/Transforms/Utils/LoopUnroll.cpp
+++ lib/Transforms/Utils/LoopUnroll.cpp
@@ -427,9 +427,8 @@
 
   if (RuntimeTripCount && TripMultiple % Count != 0 &&
       !UnrollRuntimeLoopRemainder(L, Count, AllowExpensiveTripCount,
-                                  EpilogProfitability, UnrollRemainder,
-                                  LI, SE, DT, AC, ORE,
-                                  PreserveLCSSA)) {
+                                  EpilogProfitability, UnrollRemainder, LI, SE,
+                                  DT, AC, PreserveLCSSA)) {
     if (Force)
       RuntimeTripCount = false;
     else {
@@ -461,17 +460,19 @@
   if (CompletelyUnroll) {
     DEBUG(dbgs() << "COMPLETELY UNROLLING loop %" << Header->getName()
           << " with trip count " << TripCount << "!\n");
-    ORE->emit(OptimizationRemark(DEBUG_TYPE, "FullyUnrolled", L->getStartLoc(),
-                                 L->getHeader())
-              << "completely unrolled loop with "
-              << NV("UnrollCount", TripCount) << " iterations");
+    if (ORE)
+      ORE->emit(OptimizationRemark(DEBUG_TYPE, "FullyUnrolled",
+                                   L->getStartLoc(), L->getHeader())
+                << "completely unrolled loop with "
+                << NV("UnrollCount", TripCount) << " iterations");
   } else if (PeelCount) {
     DEBUG(dbgs() << "PEELING loop %" << Header->getName()
                  << " with iteration count " << PeelCount << "!\n");
-    ORE->emit(OptimizationRemark(DEBUG_TYPE, "Peeled", L->getStartLoc(),
-                                 L->getHeader())
-              << " peeled loop by " << NV("PeelCount", PeelCount)
-              << " iterations");
+    if (ORE)
+      ORE->emit(OptimizationRemark(DEBUG_TYPE, "Peeled", L->getStartLoc(),
+                                   L->getHeader())
+                << " peeled loop by " << NV("PeelCount", PeelCount)
+                << " iterations");
   } else {
     auto DiagBuilder = [&]() {
       OptimizationRemark Diag(DEBUG_TYPE, "PartialUnrolled", L->getStartLoc(),
@@ -484,19 +485,23 @@
           << " by " << Count);
     if (TripMultiple == 0 || BreakoutTrip != TripMultiple) {
       DEBUG(dbgs() << " with a breakout at trip " << BreakoutTrip);
-      ORE->emit([&]() {
-        return DiagBuilder() << " with a breakout at trip "
-                             << NV("BreakoutTrip", BreakoutTrip);
-      });
+      if (ORE)
+        ORE->emit([&]() {
+          return DiagBuilder() << " with a breakout at trip "
+                               << NV("BreakoutTrip", BreakoutTrip);
+        });
     } else if (TripMultiple != 1) {
       DEBUG(dbgs() << " with " << TripMultiple << " trips per branch");
-      ORE->emit([&]() {
-        return DiagBuilder() << " with " << NV("TripMultiple", TripMultiple)
-                             << " trips per branch";
-      });
+      if (ORE)
+        ORE->emit([&]() {
+          return DiagBuilder() << " with " << NV("TripMultiple", TripMultiple)
+                               << " trips per branch";
+        });
     } else if (RuntimeTripCount) {
       DEBUG(dbgs() << " with run-time trip count");
-      ORE->emit([&]() { return DiagBuilder() << " with run-time trip count"; });
+      if (ORE)
+        ORE->emit(
+            [&]() { return DiagBuilder() << " with run-time trip count"; });
     }
     DEBUG(dbgs() << "!\n");
   }
Index: lib/Transforms/Utils/LoopUnrollRuntime.cpp
===================================================================
--- lib/Transforms/Utils/LoopUnrollRuntime.cpp
+++ lib/Transforms/Utils/LoopUnrollRuntime.cpp
@@ -568,7 +568,6 @@
                                       bool UnrollRemainder,
                                       LoopInfo *LI, ScalarEvolution *SE,
                                       DominatorTree *DT, AssumptionCache *AC,
-                                      OptimizationRemarkEmitter *ORE,
                                       bool PreserveLCSSA) {
   DEBUG(dbgs() << "Trying runtime unrolling on Loop: \n");
   DEBUG(L->dump());
@@ -935,12 +934,12 @@
 
   if (remainderLoop && UnrollRemainder) {
     DEBUG(dbgs() << "Unrolling remainder loop\n");
-    UnrollLoop(remainderLoop, /*Count*/Count - 1, /*TripCount*/Count - 1,
-               /*Force*/false, /*AllowRuntime*/false,
-               /*AllowExpensiveTripCount*/false, /*PreserveCondBr*/true,
-               /*PreserveOnlyFirst*/false, /*TripMultiple*/1,
-               /*PeelCount*/0, /*UnrollRemainder*/false, LI, SE, DT, AC, ORE,
-               PreserveLCSSA);
+    UnrollLoop(remainderLoop, /*Count*/ Count - 1, /*TripCount*/ Count - 1,
+               /*Force*/ false, /*AllowRuntime*/ false,
+               /*AllowExpensiveTripCount*/ false, /*PreserveCondBr*/ true,
+               /*PreserveOnlyFirst*/ false, /*TripMultiple*/ 1,
+               /*PeelCount*/ 0, /*UnrollRemainder*/ false, LI, SE, DT, AC,
+               /*ORE*/ nullptr, PreserveLCSSA);
   }
 
   NumRuntimeUnrolled++;
Index: test/Transforms/LoopUnroll/runtime-unroll-remainder.ll
===================================================================
--- test/Transforms/LoopUnroll/runtime-unroll-remainder.ll
+++ test/Transforms/LoopUnroll/runtime-unroll-remainder.ll
@@ -1,4 +1,5 @@
 ; RUN: opt < %s -S -loop-unroll -unroll-runtime=true -unroll-count=4 -unroll-remainder -instcombine | FileCheck %s
+; RUN: opt < %s -S -loop-unroll -unroll-runtime=true -unroll-count=4 -unroll-remainder -pass-remarks=loop-unroll 2>&1 | FileCheck %s --check-prefix=REMARKS
 
 ; CHECK-LABEL: unroll
 define i32 @unroll(i32* nocapture readonly %a, i32* nocapture readonly %b, i32 %N) local_unnamed_addr #0 {
@@ -72,3 +73,7 @@
   %exitcond = icmp eq i64 %indvars.iv.next, %wide.trip.count
   br i1 %exitcond, label %for.cond.cleanup, label %for.body
 }
+
+; REMARKS-NOT: remark: {{.*}} completely unrolled loop with 3 iterations
+; REMARKS: {{.*}} unrolled loop by a factor of 4 with run-time trip count
+