diff --git a/clang/unittests/Frontend/CompilerInvocationTest.cpp b/clang/unittests/Frontend/CompilerInvocationTest.cpp
--- a/clang/unittests/Frontend/CompilerInvocationTest.cpp
+++ b/clang/unittests/Frontend/CompilerInvocationTest.cpp
@@ -27,7 +27,7 @@
   IntrusiveRefCntPtr<DiagnosticsEngine> Diags;
   SmallVector<const char *, 32> GeneratedArgs;
   SmallVector<std::string, 32> GeneratedArgsStorage;
-  CompilerInvocation CInvok;
+  CompilerInvocation Invocation;
 
   const char *operator()(const Twine &Arg) {
     return GeneratedArgsStorage.emplace_back(Arg.str()).c_str();
@@ -40,41 +40,41 @@
 TEST_F(CommandLineTest, OptIsInitializedWithCustomDefaultValue) {
   const char *Args[] = {"clang", "-xc++"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  ASSERT_TRUE(CInvok.getFrontendOpts().UseTemporary);
+  ASSERT_TRUE(Invocation.getFrontendOpts().UseTemporary);
 }
 
 TEST_F(CommandLineTest, OptOfNegativeFlagIsPopulatedWithFalse) {
   const char *Args[] = {"clang", "-xc++", "-fno-temp-file"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  ASSERT_FALSE(CInvok.getFrontendOpts().UseTemporary);
+  ASSERT_FALSE(Invocation.getFrontendOpts().UseTemporary);
 }
 
 TEST_F(CommandLineTest, OptsOfImpliedPositiveFlagArePopulatedWithTrue) {
   const char *Args[] = {"clang", "-xc++", "-cl-unsafe-math-optimizations"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
   // Explicitly provided flag.
-  ASSERT_TRUE(CInvok.getLangOpts()->CLUnsafeMath);
+  ASSERT_TRUE(Invocation.getLangOpts()->CLUnsafeMath);
 
   // Flags directly implied by explicitly provided flag.
-  ASSERT_TRUE(CInvok.getCodeGenOpts().LessPreciseFPMAD);
-  ASSERT_TRUE(CInvok.getLangOpts()->UnsafeFPMath);
+  ASSERT_TRUE(Invocation.getCodeGenOpts().LessPreciseFPMAD);
+  ASSERT_TRUE(Invocation.getLangOpts()->UnsafeFPMath);
 
   // Flag transitively implied by explicitly provided flag.
-  ASSERT_TRUE(CInvok.getLangOpts()->AllowRecip);
+  ASSERT_TRUE(Invocation.getLangOpts()->AllowRecip);
 }
 
 TEST_F(CommandLineTest, CanGenerateCC1CommandLineFlag) {
   const char *Args[] = {"clang", "-xc++", "-fmodules-strict-context-hash", "-"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   ASSERT_THAT(GeneratedArgs, Contains(StrEq("-fmodules-strict-context-hash")));
 }
@@ -83,9 +83,9 @@
   const char *TripleCStr = "i686-apple-darwin9";
   const char *Args[] = {"clang", "-xc++", "-triple", TripleCStr, "-"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   ASSERT_THAT(GeneratedArgs, Contains(StrEq(TripleCStr)));
 }
@@ -96,9 +96,9 @@
   const char *Args[] = {"clang", "-xc++", "-triple", DefaultTriple.c_str(),
                         "-"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Triple should always be emitted even if it is the default
   ASSERT_THAT(GeneratedArgs, Contains(StrEq(DefaultTriple.c_str())));
@@ -109,9 +109,9 @@
       llvm::Triple::normalize(llvm::sys::getDefaultTargetTriple());
   const char *Args[] = {"clang", "-xc++", "-"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Triple should always be emitted even if it is the default
   ASSERT_THAT(GeneratedArgs, Contains(StrEq(DefaultTriple.c_str())));
@@ -122,9 +122,9 @@
   const char *Args[] = {"clang", "-xc++", "-mrelocation-model",
                         RelocationModelCStr, "-"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Non default relocation model
   ASSERT_THAT(GeneratedArgs, Contains(StrEq(RelocationModelCStr)));
@@ -133,19 +133,19 @@
   RelocationModelCStr = "pic";
   Args[3] = RelocationModelCStr;
 
-  CompilerInvocation CInvok1;
-  CompilerInvocation::CreateFromArgs(CInvok1, Args, *Diags);
+  CompilerInvocation Invocation2;
+  CompilerInvocation::CreateFromArgs(Invocation2, Args, *Diags);
 
-  CInvok1.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation2.generateCC1CommandLine(GeneratedArgs, *this);
   ASSERT_THAT(GeneratedArgs, Each(StrNe(RelocationModelCStr)));
 }
 
 TEST_F(CommandLineTest, NotPresentNegativeFlagNotGenerated) {
   const char *Args[] = {"clang", "-xc++"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   ASSERT_THAT(GeneratedArgs, Not(Contains(StrEq("-fno-temp-file"))));
 }
@@ -153,9 +153,9 @@
 TEST_F(CommandLineTest, PresentNegativeFlagGenerated) {
   const char *Args[] = {"clang", "-xc++", "-fno-temp-file"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   ASSERT_THAT(GeneratedArgs, Contains(StrEq("-fno-temp-file")));
 }
@@ -163,9 +163,9 @@
 TEST_F(CommandLineTest, NotPresentAndNotImpliedNotGenerated) {
   const char *Args[] = {"clang", "-xc++"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Missing options are not generated.
   ASSERT_THAT(GeneratedArgs,
@@ -177,9 +177,9 @@
 TEST_F(CommandLineTest, NotPresentAndImpliedNotGenerated) {
   const char *Args[] = {"clang", "-xc++", "-cl-unsafe-math-optimizations"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Missing options that were implied are not generated.
   ASSERT_THAT(GeneratedArgs, Contains(StrEq("-cl-unsafe-math-optimizations")));
@@ -191,9 +191,9 @@
   const char *Args[] = {"clang", "-xc++", "-cl-unsafe-math-optimizations",
                         "-cl-mad-enable", "-menable-unsafe-fp-math"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Present options that were also implied are not generated.
   ASSERT_THAT(GeneratedArgs, Contains(StrEq("-cl-unsafe-math-optimizations")));
@@ -205,9 +205,9 @@
   const char *Args[] = {"clang", "-xc++", "-cl-mad-enable",
                         "-menable-unsafe-fp-math"};
 
-  CompilerInvocation::CreateFromArgs(CInvok, Args, *Diags);
+  CompilerInvocation::CreateFromArgs(Invocation, Args, *Diags);
 
-  CInvok.generateCC1CommandLine(GeneratedArgs, *this);
+  Invocation.generateCC1CommandLine(GeneratedArgs, *this);
 
   // Present options that were not implied are generated.
   ASSERT_THAT(GeneratedArgs, Contains(StrEq("-cl-mad-enable")));