XCore target has -fno-use-cxa-atexit as default.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194460 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index c69ad53..03459f0 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -3220,7 +3220,8 @@
            options::OPT_fuse_cxa_atexit, options::OPT_fno_use_cxa_atexit,
            getToolChain().getTriple().getOS() != llvm::Triple::Cygwin &&
                getToolChain().getTriple().getOS() != llvm::Triple::MinGW32 &&
-               getToolChain().getArch() != llvm::Triple::hexagon) ||
+               getToolChain().getArch() != llvm::Triple::hexagon &&
+               getToolChain().getArch() != llvm::Triple::xcore) ||
       KernelOrKext)
     CmdArgs.push_back("-fno-use-cxa-atexit");