Migrate test from llvm/test/FrontendC++.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137769 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGenCXX/2010-06-22-BitfieldInit.cpp

+// RUN: %clang_cc1 -emit-llvm -g %s -o -
+struct TEST2
+{
+  int subid:32;
+  int :0;
+};
+
+typedef struct _TEST3
+{
+  TEST2 foo;
+  TEST2 foo2;
+} TEST3;
+
+TEST3 test =
+  {
+    {0},
+    {0}
+  };
+
+int main() { return 0; }