diff --git a/unittests/ADT/SCCIteratorTest.cpp b/unittests/ADT/SCCIteratorTest.cpp
index ca6d84ed2f3..57a999bea9d 100644
--- a/unittests/ADT/SCCIteratorTest.cpp
+++ b/unittests/ADT/SCCIteratorTest.cpp
@@ -63,8 +63,9 @@ TEST(SCCIteratorTest, AllSmallGraphs) {
       // Check that every node in the SCC is reachable from every other node in
       // the SCC.
       for (unsigned i = 0; i != NUM_NODES; ++i)
-        if (NodesInThisSCC.count(i))
+        if (NodesInThisSCC.count(i)) {
           EXPECT_TRUE(NodesInThisSCC.isSubsetOf(G.NodesReachableFrom(i)));
+        }
 
       // OK, now that we now that every node in the SCC is reachable from every
       // other, this means that the set of nodes reachable from any node in the
@@ -78,8 +79,9 @@ TEST(SCCIteratorTest, AllSmallGraphs) {
             NodesReachableFromSCC.Meet(NodesInThisSCC.Complement());
 
           for (unsigned j = 0; j != NUM_NODES; ++j)
-            if (ReachableButNotInSCC.count(j))
+            if (ReachableButNotInSCC.count(j)) {
               EXPECT_TRUE(G.NodesReachableFrom(j).Meet(NodesInThisSCC).isEmpty());
+            }
 
           // The result must be the same for all other nodes in this SCC, so
           // there is no point in checking them.
diff --git a/unittests/ADT/StringRefTest.cpp b/unittests/ADT/StringRefTest.cpp
index e308f2d7c64..0684afe678f 100644
--- a/unittests/ADT/StringRefTest.cpp
+++ b/unittests/ADT/StringRefTest.cpp
@@ -882,8 +882,9 @@ TEST(StringRefTest, getAsDouble) {
     double Result;
     StringRef S(Entry.Str);
     EXPECT_EQ(Entry.ShouldFail, S.getAsDouble(Result, Entry.AllowInexact));
-    if (!Entry.ShouldFail)
+    if (!Entry.ShouldFail) {
       EXPECT_EQ(Result, Entry.D);
+    }
   }
 }
 
diff --git a/unittests/CodeGen/LowLevelTypeTest.cpp b/unittests/CodeGen/LowLevelTypeTest.cpp
index 428d6b93f79..11555464290 100644
--- a/unittests/CodeGen/LowLevelTypeTest.cpp
+++ b/unittests/CodeGen/LowLevelTypeTest.cpp
@@ -137,8 +137,9 @@ TEST(LowLevelTypeTest, Vector) {
       if ((Elts % 2) == 0) {
         EXPECT_EQ(S * (Elts / 2), HalfEltIfEvenTy.getSizeInBits());
         EXPECT_EQ(S, HalfEltIfEvenTy.getScalarSizeInBits());
-        if (Elts > 2)
+        if (Elts > 2) {
           EXPECT_EQ(Elts / 2, HalfEltIfEvenTy.getNumElements());
+        }
       }
 
       EXPECT_EQ(S * (Elts * 2), DoubleEltTy.getSizeInBits());
diff --git a/unittests/DebugInfo/DWARF/DWARFDebugInfoTest.cpp b/unittests/DebugInfo/DWARF/DWARFDebugInfoTest.cpp
index 18cab52a81b..bf004d6ffc2 100644
--- a/unittests/DebugInfo/DWARF/DWARFDebugInfoTest.cpp
+++ b/unittests/DebugInfo/DWARF/DWARFDebugInfoTest.cpp
@@ -311,8 +311,9 @@ void TestAllForms() {
   EXPECT_EQ(Data2, toReference(DieDG.find(Attr_DW_FORM_ref2), 0));
   EXPECT_EQ(Data4, toReference(DieDG.find(Attr_DW_FORM_ref4), 0));
   EXPECT_EQ(Data8, toReference(DieDG.find(Attr_DW_FORM_ref8), 0));
-  if (Version >= 4)
+  if (Version >= 4) {
     EXPECT_EQ(Data8_2, toReference(DieDG.find(Attr_DW_FORM_ref_sig8), 0));
+  }
   EXPECT_EQ(UData[0], toReference(DieDG.find(Attr_DW_FORM_ref_udata), 0));
 
   //----------------------------------------------------------------------
@@ -320,15 +321,17 @@ void TestAllForms() {
   //----------------------------------------------------------------------
   EXPECT_EQ(1ULL, toUnsigned(DieDG.find(Attr_DW_FORM_flag_true), 0));
   EXPECT_EQ(0ULL, toUnsigned(DieDG.find(Attr_DW_FORM_flag_false), 1));
-  if (Version >= 4)
+  if (Version >= 4) {
     EXPECT_EQ(1ULL, toUnsigned(DieDG.find(Attr_DW_FORM_flag_present), 0));
+  }
 
   //----------------------------------------------------------------------
   // Test SLEB128 based forms
   //----------------------------------------------------------------------
   EXPECT_EQ(SData, toSigned(DieDG.find(Attr_DW_FORM_sdata), 0));
-  if (Version >= 5)
+  if (Version >= 5) {
     EXPECT_EQ(ICSData, toSigned(DieDG.find(Attr_DW_FORM_implicit_const), 0));
+  }
 
   //----------------------------------------------------------------------
   // Test ULEB128 based forms
@@ -340,9 +343,10 @@ void TestAllForms() {
   //----------------------------------------------------------------------
   EXPECT_EQ(Dwarf32Values[0],
             toReference(DieDG.find(Attr_DW_FORM_GNU_ref_alt), 0));
-  if (Version >= 4)
+  if (Version >= 4) {
     EXPECT_EQ(Dwarf32Values[1],
               toSectionOffset(DieDG.find(Attr_DW_FORM_sec_offset), 0));
+  }
 
   //----------------------------------------------------------------------
   // Add an address at the end to make sure we can decode this value
diff --git a/unittests/Support/CommandLineTest.cpp b/unittests/Support/CommandLineTest.cpp
index 7fdd42b4fec..f9dc3930df8 100644
--- a/unittests/Support/CommandLineTest.cpp
+++ b/unittests/Support/CommandLineTest.cpp
@@ -180,8 +180,9 @@ void testCommandLineTokenizer(ParserFunction *parse, StringRef Input,
   parse(Input, Saver, Actual, /*MarkEOLs=*/false);
   EXPECT_EQ(OutputSize, Actual.size());
   for (unsigned I = 0, E = Actual.size(); I != E; ++I) {
-    if (I < OutputSize)
+    if (I < OutputSize) {
       EXPECT_STREQ(Output[I], Actual[I]);
+    }
   }
 }
 
@@ -528,8 +529,9 @@ TEST(CommandLineTest, GetRegisteredSubcommands) {
   EXPECT_FALSE(Opt1);
   EXPECT_FALSE(Opt2);
   for (auto *S : cl::getRegisteredSubcommands()) {
-    if (*S)
+    if (*S) {
       EXPECT_EQ("sc1", S->getName());
+    }
   }
 
   cl::ResetAllOptionOccurrences();
@@ -538,8 +540,9 @@ TEST(CommandLineTest, GetRegisteredSubcommands) {
   EXPECT_FALSE(Opt1);
   EXPECT_FALSE(Opt2);
   for (auto *S : cl::getRegisteredSubcommands()) {
-    if (*S)
+    if (*S) {
       EXPECT_EQ("sc2", S->getName());
+    }
   }
 }