Add a -fcxx-exceptions flag to clang -cc1. This controls the newly added CXXExceptions flag.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126300 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 17daca8..026508a 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -585,10 +585,12 @@
     Res.push_back("-faltivec");
   if (Opts.Exceptions)
     Res.push_back("-fexceptions");
+  if (Opts.ObjCExceptions)
+    Res.push_back("-fobjc-exceptions");
+  if (Opts.CXXExceptions)
+    Res.push_back("-fcxx-exceptions");
   if (Opts.SjLjExceptions)
     Res.push_back("-fsjlj-exceptions");
-  if (!Opts.ObjCExceptions)
-    Res.push_back("-fno-objc-exceptions");
   if (!Opts.RTTI)
     Res.push_back("-fno-rtti");
   if (Opts.MSBitfields)
@@ -1456,6 +1458,9 @@
     Opts.ThreadsafeStatics = 0;
   Opts.Exceptions = Args.hasArg(OPT_fexceptions);
   Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
+  Opts.CXXExceptions = Args.hasArg(OPT_fcxx_exceptions);
+  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
+
   Opts.RTTI = !Args.hasArg(OPT_fno_rtti);
   Opts.Blocks = Args.hasArg(OPT_fblocks);
   Opts.CharIsSigned = !Args.hasArg(OPT_fno_signed_char);
@@ -1484,8 +1489,6 @@
   Opts.CatchUndefined = Args.hasArg(OPT_fcatch_undefined_behavior);
   Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
   Opts.PICLevel = Args.getLastArgIntValue(OPT_pic_level, 0, Diags);
-  Opts.SjLjExceptions = Args.hasArg(OPT_fsjlj_exceptions);
-  Opts.ObjCExceptions = Args.hasArg(OPT_fobjc_exceptions);
   Opts.Static = Args.hasArg(OPT_static_define);
   Opts.DumpRecordLayouts = Args.hasArg(OPT_fdump_record_layouts);
   Opts.DumpVTableLayouts = Args.hasArg(OPT_fdump_vtable_layouts);