Fixed style issues pointed out by Justin Bogner.

[echristo]

LGTM.

-eric

lib/Driver/Action.cpp

 CudaDeviceAction::CudaDeviceAction(std::unique_ptr<Action> Input,
                                    const char *ArchName, bool AtTopLevel)
     : Action(CudaDeviceClass, std::move(Input)), GpuArchName(ArchName),
       AtTopLevel(AtTopLevel) {}
 
 void CudaHostAction::anchor() {}
 
 CudaHostAction::CudaHostAction(std::unique_ptr<Action> Input,
-                               const ActionList &_DeviceActions)
-    : Action(CudaHostClass, std::move(Input)), DeviceActions(_DeviceActions) {}
+                               const ActionList &DeviceActions)
+    : Action(CudaHostClass, std::move(Input)), DeviceActions(DeviceActions) {}
 
 CudaHostAction::~CudaHostAction() {
-  for (iterator it = DeviceActions.begin(), ie = DeviceActions.end(); it != ie;
-       ++it)
-    delete *it;
+  for (auto &DA : DeviceActions)
+    delete DA;
 }
 
 void JobAction::anchor() {}
 
 JobAction::JobAction(ActionClass Kind, std::unique_ptr<Action> Input,
                      types::ID Type)
     : Action(Kind, std::move(Input), Type) {}
 

lib/Driver/Driver.cpp

buildCudaActions(const Driver &D, const ToolChain &TC, DerivedArgList &Args,
 
   // Default to sm_20 which is the lowest common denominator for supported GPUs.
   // sm_20 code should work correctly, if suboptimally, on all newer GPUs.
   if (GpuArchList.empty())
     GpuArchList.push_back("sm_20");
 
   // Replicate inputs for each GPU architecture.
   Driver::InputList CudaDeviceInputs;
-  for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i)
+  for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
     CudaDeviceInputs.push_back(std::make_pair(types::TY_CUDA_DEVICE, InputArg));
 
   // Build actions for all device inputs.
   ActionList CudaDeviceActions;
   D.BuildActions(TC, Args, CudaDeviceInputs, CudaDeviceActions);
   assert(GpuArchList.size() == CudaDeviceActions.size() &&
          "Failed to create actions for all devices");
 
   // Check whether any of device actions stopped before they could generate PTX.
   bool PartialCompilation = false;
-  bool DeviceOnlyCompilation = Args.hasArg(options::OPT_cuda_device_only);
-  for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i) {
-    if (CudaDeviceActions[i]->getKind() != Action::BackendJobClass) {
+  for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I) {
+    if (CudaDeviceActions[I]->getKind() != Action::BackendJobClass) {
       PartialCompilation = true;
       break;
     }
   }
 
   // Figure out what to do with device actions -- pass them as inputs to the
   // host action or run each of them independently.
+  bool DeviceOnlyCompilation = Args.hasArg(options::OPT_cuda_device_only);
   if (PartialCompilation || DeviceOnlyCompilation) {
     // In case of partial or device-only compilation results of device actions
     // are not consumed by the host action device actions have to be added to
     // top-level actions list with AtTopLevel=true and run independently.
 
     // -o is ambiguous if we have more than one top-level action.
     if (Args.hasArg(options::OPT_o) &&
         (!DeviceOnlyCompilation || GpuArchList.size() > 1)) {
       D.Diag(clang::diag::err_drv_output_argument_with_multiple_files);
       return nullptr;
     }
 
-    for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i)
+    for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
       Actions.push_back(
-          new CudaDeviceAction(std::unique_ptr<Action>(CudaDeviceActions[i]),
-                               GpuArchList[i], /* AtTopLevel */ true));
+          new CudaDeviceAction(std::unique_ptr<Action>(CudaDeviceActions[I]),
+                               GpuArchList[I], /* AtTopLevel */ true));
     // Kill host action in case of device-only compilation.
     if (DeviceOnlyCompilation)
       Current.reset(nullptr);
     return Current;
-  } else {
-    // Outputs of device actions during complete CUDA compilation get created
-    // with AtTopLevel=false and become inputs for the host action.
-    ActionList DeviceActions;
-    for (unsigned i = 0, e = GpuArchList.size(); i != e; ++i)
-      DeviceActions.push_back(
-          new CudaDeviceAction(std::unique_ptr<Action>(CudaDeviceActions[i]),
-                               GpuArchList[i], /* AtTopLevel */ false));
-    // Return a new host action that incorporates original host action and all
-    // device actions.
-    return std::unique_ptr<Action>(
-        new CudaHostAction(std::move(Current), DeviceActions));
-  }
-}
+  }
+
+  for (unsigned I = 0, E = GpuArchList.size(); I != E; ++I)
+        new CudaDeviceAction(std::unique_ptr<Action>(CudaDeviceActions[I]),
+                             GpuArchList[I], /* AtTopLevel */ false));
 
 void Driver::BuildActions(const ToolChain &TC, DerivedArgList &Args,
                           const InputList &Inputs, ActionList &Actions) const {
   llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
 
   if (!SuppressMissingInputWarning && Inputs.empty()) {
     Diag(clang::diag::err_drv_no_input_files);
     return;
if (A->getValue()[0] == '\0') {
       Args.eraseArg(options::OPT__SLASH_o);
     }
   }
 
   // Construct the actions to perform.
   ActionList LinkerInputs;
 
   llvm::SmallVector<phases::ID, phases::MaxNumberOfPhases> PL;
-  for (unsigned i = 0, e = Inputs.size(); i != e; ++i) {
-    types::ID InputType = Inputs[i].first;
-    const Arg *InputArg = Inputs[i].second;
+  for (auto &I : Inputs) {
+    types::ID InputType = I.first;
+    const Arg *InputArg = I.second;
 
     PL.clear();
     types::getCompilationPhases(InputType, PL);
 
     // If the first step comes after the final phase we are doing as part of
     // this compilation, warn the user about it.
     phases::ID InitialPhase = PL[0];
     if (InitialPhase > FinalPhase) {
for (auto &I : Inputs) {
     if (isSaveTempsEnabled()) {
       // All phases are done independently, inject GPU blobs during compilation
       // phase as that's where we generate glue code to init them.
       CudaInjectionPhase = phases::Compile;
     } else {
       // Assumes that clang does everything up until linking phase, so we inject
       // cuda device actions at the last step before linking. Otherwise CUDA
       // host action forces preprocessor into a separate invocation.
-      if (FinalPhase == phases::Link) {
-        for (auto i = PL.begin(), e = PL.end(); i != e; ++i) {
-          auto next = i + 1;
-          if (next != e && *next == phases::Link)
-            CudaInjectionPhase = *i;
-        }
-      } else
-        CudaInjectionPhase = FinalPhase;
+      if (FinalPhase == phases::Link)
+        for (auto PI = PL.begin(), PE = PL.end(); PI != PE; ++PI) {
+          auto next = PI + 1;
+          if (next != PE && *next == phases::Link)
+            CudaInjectionPhase = *PI;
+        }
     }
 
     // Build the pipeline for this file.
     std::unique_ptr<Action> Current(new InputAction(*InputArg, InputType));
     for (SmallVectorImpl<phases::ID>::iterator i = PL.begin(), e = PL.end();
          i != e; ++i) {
       phases::ID Phase = *i;
 
if (const BindArchAction *BAA = dyn_cast<BindArchAction>(A)) {
     BuildJobsForAction(C, *BAA->begin(), TC, ArchName, AtTopLevel,
                        MultipleArchs, LinkingOutput, Result);
     return;
   }
 
   if (const CudaDeviceAction *CDA = dyn_cast<CudaDeviceAction>(A)) {
     // Figure out which NVPTX triple to use for device-side compilation based on
     // whether host is 64-bit.
-    llvm::Triple DeviceTriple(C.getDefaultToolChain().getTriple().isArch64Bit()
+    llvm::Triple DeviceTriple(TC->getTriple().isArch64Bit()
                                   ? "nvptx64-nvidia-cuda"
                                   : "nvptx-nvidia-cuda");
     BuildJobsForAction(C, *CDA->begin(),
                        &getToolChain(C.getArgs(), DeviceTriple),
                        CDA->getGpuArchName(), CDA->isAtTopLevel(),
                        /*MultipleArchs*/ true, LinkingOutput, Result);
     return;
   }

lib/Driver/Tools.cpp

if (SplitDwarf) {
     CmdArgs.push_back("-split-dwarf-file");
     SplitDwarfOut = SplitDebugName(Args, Input);
     CmdArgs.push_back(SplitDwarfOut);
   }
 
   // Host-side cuda compilation receives device-side outputs as Inputs[1...].
   // Include them with -fcuda-include-gpubinary.
   if (IsCuda && Inputs.size() > 1)
-    for (InputInfoList::const_iterator it = std::next(Inputs.begin()),
-                                       ie = Inputs.end();
-         it != ie; ++it) {
+    for (auto I = std::next(Inputs.begin()), E = Inputs.end(); I != E; ++I) {
       CmdArgs.push_back("-fcuda-include-gpubinary");
-      CmdArgs.push_back(it->getFilename());
+      CmdArgs.push_back(I->getFilename());
     }
 
   // Finally add the compile command to the compilation.
   if (Args.hasArg(options::OPT__SLASH_fallback) &&
       Output.getType() == types::TY_Object &&
       (InputType == types::TY_C || InputType == types::TY_CXX)) {
     auto CLCommand =
         getCLFallback()->GetCommand(C, JA, Output, Inputs, Args, LinkingOutput);