[driver] Clang doesn't support -mkernel/-fapple-kext for i386, so it's 
automatically invoking llvm-gcc's cc1plus, which doesn't support all options
supported by Clang.  Therefore, filter out unsupported options.
rdar://9964354


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137842 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index ecfb4fe..2301811 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -2446,6 +2446,18 @@
   return Args.MakeArgString(Res + ".d");
 }
 
+void darwin::CC1::RemoveCC1UnsupportedArgs(ArgStringList &CmdArgs) const {
+  for (ArgStringList::iterator it = CmdArgs.begin(), ie = CmdArgs.end(); 
+       it != ie;) {
+    if (!strcmp(*it, "-Wno-self-assign")) {
+      it = CmdArgs.erase(it);
+      it = CmdArgs.end();
+    }
+    else
+      ++it;
+  }
+}
+
 void darwin::CC1::AddCC1Args(const ArgList &Args,
                              ArgStringList &CmdArgs) const {
   const Driver &D = getToolChain().getDriver();
@@ -2853,6 +2865,8 @@
     CmdArgs.push_back(Output.getFilename());
   }
 
+  RemoveCC1UnsupportedArgs(CmdArgs);
+
   const char *CC1Name = getCC1Name(Inputs[0].getType());
   const char *Exec =
     Args.MakeArgString(getToolChain().GetProgramPath(CC1Name));
diff --git a/lib/Driver/Tools.h b/lib/Driver/Tools.h
index 1741d05..702fc9d 100644
--- a/lib/Driver/Tools.h
+++ b/lib/Driver/Tools.h
@@ -178,6 +178,7 @@
     const char *getCC1Name(types::ID Type) const;
 
     void AddCC1Args(const ArgList &Args, ArgStringList &CmdArgs) const;
+    void RemoveCC1UnsupportedArgs(ArgStringList &CmdArgs) const;
     void AddCC1OptionsArgs(const ArgList &Args, ArgStringList &CmdArgs,
                            const InputInfoList &Inputs,
                            const ArgStringList &OutputArgs) const;