Index: cfe/trunk/lib/Driver/ToolChains.h
===================================================================
--- cfe/trunk/lib/Driver/ToolChains.h
+++ cfe/trunk/lib/Driver/ToolChains.h
@@ -158,19 +158,19 @@
   GCCInstallationDetector GCCInstallation;
 
   // \brief A class to find a viable CUDA installation
-
   class CudaInstallationDetector {
-    bool IsValid;
+  private:
     const Driver &D;
-    std::string CudaInstallPath;
-    std::string CudaBinPath;
-    std::string CudaLibPath;
-    std::string CudaLibDevicePath;
-    std::string CudaIncludePath;
-    llvm::StringMap<std::string> CudaLibDeviceMap;
+    bool IsValid = false;
+    std::string InstallPath;
+    std::string BinPath;
+    std::string LibPath;
+    std::string LibDevicePath;
+    std::string IncludePath;
+    llvm::StringMap<std::string> LibDeviceMap;
 
   public:
-    CudaInstallationDetector(const Driver &D) : IsValid(false), D(D) {}
+    CudaInstallationDetector(const Driver &D) : D(D) {}
     void init(const llvm::Triple &TargetTriple, const llvm::opt::ArgList &Args);
 
     /// \brief Check whether we detected a valid Cuda install.
@@ -179,18 +179,18 @@
     void print(raw_ostream &OS) const;
 
     /// \brief Get the detected Cuda installation path.
-    StringRef getInstallPath() const { return CudaInstallPath; }
+    StringRef getInstallPath() const { return InstallPath; }
     /// \brief Get the detected path to Cuda's bin directory.
-    StringRef getBinPath() const { return CudaBinPath; }
+    StringRef getBinPath() const { return BinPath; }
     /// \brief Get the detected Cuda Include path.
-    StringRef getIncludePath() const { return CudaIncludePath; }
+    StringRef getIncludePath() const { return IncludePath; }
     /// \brief Get the detected Cuda library path.
-    StringRef getLibPath() const { return CudaLibPath; }
+    StringRef getLibPath() const { return LibPath; }
     /// \brief Get the detected Cuda device library path.
-    StringRef getLibDevicePath() const { return CudaLibDevicePath; }
+    StringRef getLibDevicePath() const { return LibDevicePath; }
     /// \brief Get libdevice file for given architecture
     std::string getLibDeviceFile(StringRef Gpu) const {
-      return CudaLibDeviceMap.lookup(Gpu);
+      return LibDeviceMap.lookup(Gpu);
     }
   };
 
Index: cfe/trunk/lib/Driver/ToolChains.cpp
===================================================================
--- cfe/trunk/lib/Driver/ToolChains.cpp
+++ cfe/trunk/lib/Driver/ToolChains.cpp
@@ -1725,20 +1725,19 @@
     if (CudaPath.empty() || !D.getVFS().exists(CudaPath))
       continue;
 
-    CudaInstallPath = CudaPath;
-    CudaBinPath = CudaPath + "/bin";
-    CudaIncludePath = CudaInstallPath + "/include";
-    CudaLibDevicePath = CudaInstallPath + "/nvvm/libdevice";
-    CudaLibPath =
-        CudaInstallPath + (TargetTriple.isArch64Bit() ? "/lib64" : "/lib");
-
-    if (!(D.getVFS().exists(CudaIncludePath) &&
-          D.getVFS().exists(CudaBinPath) && D.getVFS().exists(CudaLibPath) &&
-          D.getVFS().exists(CudaLibDevicePath)))
+    InstallPath = CudaPath;
+    BinPath = CudaPath + "/bin";
+    IncludePath = InstallPath + "/include";
+    LibDevicePath = InstallPath + "/nvvm/libdevice";
+    LibPath = InstallPath + (TargetTriple.isArch64Bit() ? "/lib64" : "/lib");
+
+    auto &FS = D.getVFS();
+    if (!(FS.exists(IncludePath) && FS.exists(BinPath) && FS.exists(LibPath) &&
+          FS.exists(LibDevicePath)))
       continue;
 
     std::error_code EC;
-    for (llvm::sys::fs::directory_iterator LI(CudaLibDevicePath, EC), LE;
+    for (llvm::sys::fs::directory_iterator LI(LibDevicePath, EC), LE;
          !EC && LI != LE; LI = LI.increment(EC)) {
       StringRef FilePath = LI->path();
       StringRef FileName = llvm::sys::path::filename(FilePath);
@@ -1748,24 +1747,24 @@
         continue;
       StringRef GpuArch = FileName.slice(
           LibDeviceName.size(), FileName.find('.', LibDeviceName.size()));
-      CudaLibDeviceMap[GpuArch] = FilePath.str();
+      LibDeviceMap[GpuArch] = FilePath.str();
       // Insert map entries for specifc devices with this compute capability.
       if (GpuArch == "compute_20") {
-        CudaLibDeviceMap["sm_20"] = FilePath;
-        CudaLibDeviceMap["sm_21"] = FilePath;
+        LibDeviceMap["sm_20"] = FilePath;
+        LibDeviceMap["sm_21"] = FilePath;
       } else if (GpuArch == "compute_30") {
-        CudaLibDeviceMap["sm_30"] = FilePath;
-        CudaLibDeviceMap["sm_32"] = FilePath;
+        LibDeviceMap["sm_30"] = FilePath;
+        LibDeviceMap["sm_32"] = FilePath;
       } else if (GpuArch == "compute_35") {
-        CudaLibDeviceMap["sm_35"] = FilePath;
-        CudaLibDeviceMap["sm_37"] = FilePath;
+        LibDeviceMap["sm_35"] = FilePath;
+        LibDeviceMap["sm_37"] = FilePath;
       } else if (GpuArch == "compute_50") {
-        CudaLibDeviceMap["sm_50"] = FilePath;
-        CudaLibDeviceMap["sm_52"] = FilePath;
-        CudaLibDeviceMap["sm_53"] = FilePath;
-        CudaLibDeviceMap["sm_60"] = FilePath;
-        CudaLibDeviceMap["sm_61"] = FilePath;
-        CudaLibDeviceMap["sm_62"] = FilePath;
+        LibDeviceMap["sm_50"] = FilePath;
+        LibDeviceMap["sm_52"] = FilePath;
+        LibDeviceMap["sm_53"] = FilePath;
+        LibDeviceMap["sm_60"] = FilePath;
+        LibDeviceMap["sm_61"] = FilePath;
+        LibDeviceMap["sm_62"] = FilePath;
       }
     }
 
@@ -1776,7 +1775,7 @@
 
 void Generic_GCC::CudaInstallationDetector::print(raw_ostream &OS) const {
   if (isValid())
-    OS << "Found CUDA installation: " << CudaInstallPath << "\n";
+    OS << "Found CUDA installation: " << InstallPath << "\n";
 }
 
 namespace {