Work around an LLVM bug by not referring to globals from metadata. This was only used for consistency checking anyway. For the LLVM bug, see http://llvm.org/PR4180 / http://llvm.org/PR4046

module tangotests.loops1;

void main()
{
    size_t n;
    int x;
    ushort foo;
    for (n=0; n<8; n++,x++)
    {
        foo >>= 1;
    }
}