diff --git a/clang/include/clang/Driver/ToolChain.h b/clang/include/clang/Driver/ToolChain.h
index c9d0ef197dae..ab919656eeee 100644
--- a/clang/include/clang/Driver/ToolChain.h
+++ b/clang/include/clang/Driver/ToolChain.h
@@ -68,9 +68,12 @@ public:
 
   // Tool access.
 
-  /// TranslateArgs - Create a new derived argument list for any
-  /// argument translations this ToolChain may wish to perform.
-  virtual DerivedArgList *TranslateArgs(InputArgList &Args) const = 0;
+  /// TranslateArgs - Create a new derived argument list for any argument
+  /// translations this ToolChain may wish to perform.
+  ///
+  /// \param BoundArch - The bound architecture name, or 0.
+  virtual DerivedArgList *TranslateArgs(InputArgList &Args,
+                                        const char *BoundArch) const = 0;
 
   /// SelectTool - Choose a tool to use to handle the action \arg JA.
   virtual Tool &SelectTool(const Compilation &C, const JobAction &JA) const = 0;
diff --git a/clang/lib/Driver/Compilation.cpp b/clang/lib/Driver/Compilation.cpp
index f6e1885643ab..c12f5aa88195 100644
--- a/clang/lib/Driver/Compilation.cpp
+++ b/clang/lib/Driver/Compilation.cpp
@@ -49,7 +49,7 @@ const DerivedArgList &Compilation::getArgsForToolChain(const ToolChain *TC,
 
   DerivedArgList *&Entry = TCArgs[std::make_pair(TC, BoundArch)];
   if (!Entry)
-    Entry = TC->TranslateArgs(*Args);
+    Entry = TC->TranslateArgs(*Args, BoundArch);
 
   return *Entry;
 }
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index fb6217d3ed00..7b14a20f187e 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -133,7 +133,8 @@ Tool &Darwin::SelectTool(const Compilation &C, const JobAction &JA) const {
   return *T;
 }
 
-DerivedArgList *Darwin::TranslateArgs(InputArgList &Args) const {
+DerivedArgList *Darwin::TranslateArgs(InputArgList &Args,
+                                      const char *BoundArch) const {
   DerivedArgList *DAL = new DerivedArgList(Args, false);
   const OptTable &Opts = getHost().getDriver().getOpts();
 
@@ -389,7 +390,8 @@ const char *Generic_GCC::GetForcedPicModel() const {
   return 0;
 }
 
-DerivedArgList *Generic_GCC::TranslateArgs(InputArgList &Args) const {
+DerivedArgList *Generic_GCC::TranslateArgs(InputArgList &Args,
+                                           const char *BoundArch) const {
   return new DerivedArgList(Args, true);
 }
 
diff --git a/clang/lib/Driver/ToolChains.h b/clang/lib/Driver/ToolChains.h
index 6a3ce37975b6..0e5ce3488417 100644
--- a/clang/lib/Driver/ToolChains.h
+++ b/clang/lib/Driver/ToolChains.h
@@ -33,7 +33,8 @@ public:
   Generic_GCC(const HostInfo &Host, const llvm::Triple& Triple);
   ~Generic_GCC();
 
-  virtual DerivedArgList *TranslateArgs(InputArgList &Args) const;
+  virtual DerivedArgList *TranslateArgs(InputArgList &Args,
+                                        const char *BoundArch) const;
 
   virtual Tool &SelectTool(const Compilation &C, const JobAction &JA) const;
 
@@ -101,7 +102,8 @@ public:
 
   bool isIPhone() const { return IsIPhone; }
 
-  virtual DerivedArgList *TranslateArgs(InputArgList &Args) const;
+  virtual DerivedArgList *TranslateArgs(InputArgList &Args,
+                                        const char *BoundArch) const;
 
   virtual Tool &SelectTool(const Compilation &C, const JobAction &JA) const;