Index: cfe/trunk/include/clang/Driver/Driver.h
===================================================================
--- cfe/trunk/include/clang/Driver/Driver.h
+++ cfe/trunk/include/clang/Driver/Driver.h
@@ -299,12 +299,10 @@
   /// given arguments, which are only done for a single architecture.
   ///
   /// \param C - The compilation that is being built.
-  /// \param TC - The default host tool chain.
   /// \param Args - The input arguments.
   /// \param Actions - The list to store the resulting actions onto.
-  void BuildActions(Compilation &C, const ToolChain &TC,
-                    llvm::opt::DerivedArgList &Args, const InputList &Inputs,
-                    ActionList &Actions) const;
+  void BuildActions(Compilation &C, llvm::opt::DerivedArgList &Args,
+                    const InputList &Inputs, ActionList &Actions) const;
 
   /// BuildUniversalActions - Construct the list of actions to perform
   /// for the given arguments, which may require a universal build.
@@ -376,9 +374,8 @@
   /// ConstructAction - Construct the appropriate action to do for
   /// \p Phase on the \p Input, taking in to account arguments
   /// like -fsyntax-only or --analyze.
-  Action *ConstructPhaseAction(Compilation &C, const ToolChain &TC,
-                               const llvm::opt::ArgList &Args, phases::ID Phase,
-                               Action *Input) const;
+  Action *ConstructPhaseAction(Compilation &C, const llvm::opt::ArgList &Args,
+                               phases::ID Phase, Action *Input) const;
 
   /// BuildJobsForAction - Construct the jobs to perform for the action \p A and
   /// return an InputInfo for the result of running \p A.  Will only construct
Index: cfe/trunk/lib/Driver/Driver.cpp
===================================================================
--- cfe/trunk/lib/Driver/Driver.cpp
+++ cfe/trunk/lib/Driver/Driver.cpp
@@ -510,8 +510,7 @@
   if (TC.getTriple().isOSBinFormatMachO())
     BuildUniversalActions(*C, C->getDefaultToolChain(), Inputs);
   else
-    BuildActions(*C, C->getDefaultToolChain(), C->getArgs(), Inputs,
-                 C->getActions());
+    BuildActions(*C, C->getArgs(), Inputs, C->getActions());
 
   if (CCCPrintPhases) {
     PrintActions(*C);
@@ -625,7 +624,7 @@
   if (TC.getTriple().isOSBinFormatMachO())
     BuildUniversalActions(C, TC, Inputs);
   else
-    BuildActions(C, TC, C.getArgs(), Inputs, C.getActions());
+    BuildActions(C, C.getArgs(), Inputs, C.getActions());
 
   BuildJobs(C);
 
@@ -1036,7 +1035,7 @@
     Archs.push_back(Args.MakeArgString(TC.getDefaultUniversalArchName()));
 
   ActionList SingleActions;
-  BuildActions(C, TC, Args, BAInputs, SingleActions);
+  BuildActions(C, Args, BAInputs, SingleActions);
 
   // Add in arch bindings for every top level action, as well as lipo and
   // dsymutil steps if needed.
@@ -1322,8 +1321,7 @@
   assert(C.getCudaDeviceToolChain() &&
          "Missing toolchain for device-side compilation.");
   ActionList CudaDeviceActions;
-  C.getDriver().BuildActions(C, *C.getCudaDeviceToolChain(), Args,
-                             CudaDeviceInputs, CudaDeviceActions);
+  C.getDriver().BuildActions(C, Args, CudaDeviceInputs, CudaDeviceActions);
   assert(GpuArchList.size() == CudaDeviceActions.size() &&
          "Failed to create actions for all devices");
 
@@ -1387,9 +1385,8 @@
                                       ActionList({FatbinAction}));
 }
 
-void Driver::BuildActions(Compilation &C, const ToolChain &TC,
-                          DerivedArgList &Args, const InputList &Inputs,
-                          ActionList &Actions) const {
+void Driver::BuildActions(Compilation &C, DerivedArgList &Args,
+                          const InputList &Inputs, ActionList &Actions) const {
   llvm::PrettyStackTraceString CrashInfo("Building compilation actions");
 
   if (!SuppressMissingInputWarning && Inputs.empty()) {
@@ -1516,7 +1513,7 @@
         continue;
 
       // Otherwise construct the appropriate action.
-      Current = ConstructPhaseAction(C, TC, Args, Phase, Current);
+      Current = ConstructPhaseAction(C, Args, Phase, Current);
 
       if (InputType == types::TY_CUDA && Phase == CudaInjectionPhase) {
         Current = buildCudaActions(C, Args, InputArg, Current, Actions);
@@ -1553,9 +1550,8 @@
   Args.ClaimAllArgs(options::OPT_cuda_host_only);
 }
 
-Action *Driver::ConstructPhaseAction(Compilation &C, const ToolChain &TC,
-                                     const ArgList &Args, phases::ID Phase,
-                                     Action *Input) const {
+Action *Driver::ConstructPhaseAction(Compilation &C, const ArgList &Args,
+                                     phases::ID Phase, Action *Input) const {
   llvm::PrettyStackTraceString CrashInfo("Constructing phase actions");
   // Build the appropriate action.
   switch (Phase) {