Driver: Add an explicit dsymutil action.

llvm-svn: 105474
diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index abb55b0..92c7d79 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -225,6 +225,8 @@
       T = new tools::darwin::Link(*this); break;
     case Action::LipoJobClass:
       T = new tools::darwin::Lipo(*this); break;
+    case Action::DsymutilJobClass:
+      T = new tools::darwin::Dsymutil(*this); break;
     }
   }
 
@@ -740,6 +742,8 @@
       // driver is Darwin.
     case Action::LipoJobClass:
       T = new tools::darwin::Lipo(*this); break;
+    case Action::DsymutilJobClass:
+      T = new tools::darwin::Dsymutil(*this); break;
     }
   }