Driver/ToolChains/MSVC.cpp

1387     const char &OptChar = *(OptStr.data() + I);
1388     switch (OptChar) {
1397       if (&OptChar != ExpandChar) {
1401       if (OptChar == 'd') {
1404         if (OptChar == '1') {
1406         } else if (OptChar == '2' || OptChar == 'x') {
1413         if (OptChar == '1' || OptChar == '2')
1515       char OptChar = OptStr[I];
1518         // OptChar does not expand; it's an argument to the previous char.
1521       if (OptChar == '1' || OptChar == '2' || OptChar == 'x' || OptChar == 'd')