diff --git a/llvm/lib/Support/APFloat.cpp b/llvm/lib/Support/APFloat.cpp
--- a/llvm/lib/Support/APFloat.cpp
+++ b/llvm/lib/Support/APFloat.cpp
@@ -1977,7 +1977,7 @@
   return fs;
 }
 
-/* Rounding-mode corrrect round to integral value.  */
+/* Rounding-mode correct round to integral value.  */
 IEEEFloat::opStatus IEEEFloat::roundToIntegral(roundingMode rounding_mode) {
   opStatus fs;
 
@@ -2007,7 +2007,8 @@
   bool inputSign = isNegative();
 
   fs = add(MagicConstant, rounding_mode);
-  if (fs != opOK && fs != opInexact)
+  opStatus IsInexact = static_cast<opStatus>(fs & opInexact);
+  if (fs != opOK && !IsInexact)
     return fs;
 
   fs = subtract(MagicConstant, rounding_mode);
@@ -2016,7 +2017,7 @@
   if (inputSign != isNegative())
     changeSign();
 
-  return fs;
+  return fs == opOK ? IsInexact : fs;
 }
 
 
diff --git a/llvm/unittests/ADT/APFloatTest.cpp b/llvm/unittests/ADT/APFloatTest.cpp
--- a/llvm/unittests/ADT/APFloatTest.cpp
+++ b/llvm/unittests/ADT/APFloatTest.cpp
@@ -1525,6 +1525,62 @@
   P = APFloat::getInf(APFloat::IEEEdouble(), true);
   P.roundToIntegral(APFloat::rmTowardZero);
   EXPECT_TRUE(std::isinf(P.convertToDouble()) && P.convertToDouble() < 0.0);
+
+  APFloat::opStatus St;
+
+  P = APFloat(10.0);
+  St = P.roundToIntegral(APFloat::rmTowardZero);
+  EXPECT_EQ(10.0, P.convertToDouble());
+  EXPECT_EQ(APFloat::opOK, St);
+
+  P = APFloat::getNaN(APFloat::IEEEdouble());
+  St = P.roundToIntegral(APFloat::rmTowardZero);
+  EXPECT_TRUE(P.isNaN());
+  EXPECT_FALSE(P.isNegative());
+  EXPECT_EQ(APFloat::opOK, St);
+
+  P = APFloat::getNaN(APFloat::IEEEdouble(), true);
+  St = P.roundToIntegral(APFloat::rmTowardZero);
+  EXPECT_TRUE(P.isNaN());
+  EXPECT_TRUE(P.isNegative());
+  EXPECT_EQ(APFloat::opOK, St);
+
+  P = APFloat::getInf(APFloat::IEEEdouble());
+  St = P.roundToIntegral(APFloat::rmTowardZero);
+  EXPECT_TRUE(P.isInfinity());
+  EXPECT_FALSE(P.isNegative());
+  EXPECT_EQ(APFloat::opOK, St);
+
+  P = APFloat::getInf(APFloat::IEEEdouble(), true);
+  St = P.roundToIntegral(APFloat::rmTowardZero);
+  EXPECT_TRUE(P.isInfinity());
+  EXPECT_TRUE(P.isNegative());
+  EXPECT_EQ(APFloat::opOK, St);
+
+  P = APFloat(10.5);
+  St = P.roundToIntegral(APFloat::rmTowardZero);
+  EXPECT_EQ(10.0, P.convertToDouble());
+  EXPECT_EQ(APFloat::opInexact, St);
+
+  P = APFloat(10.5);
+  St = P.roundToIntegral(APFloat::rmTowardPositive);
+  EXPECT_EQ(11.0, P.convertToDouble());
+  EXPECT_EQ(APFloat::opInexact, St);
+
+  P = APFloat(10.5);
+  St = P.roundToIntegral(APFloat::rmTowardNegative);
+  EXPECT_EQ(10.0, P.convertToDouble());
+  EXPECT_EQ(APFloat::opInexact, St);
+
+  P = APFloat(10.5);
+  St = P.roundToIntegral(APFloat::rmNearestTiesToAway);
+  EXPECT_EQ(11.0, P.convertToDouble());
+  EXPECT_EQ(APFloat::opInexact, St);
+
+  P = APFloat(10.5);
+  St = P.roundToIntegral(APFloat::rmNearestTiesToEven);
+  EXPECT_EQ(10.0, P.convertToDouble());
+  EXPECT_EQ(APFloat::opInexact, St);
 }
 
 TEST(APFloatTest, isInteger) {