Can keil compiler translate C code into SIMD instructions(ARMv7-m)

When we write such code as following, can keil compiler automaticly translate it into SIMD STM.

  do{

          *p++ = 1;

           *p++ = 1;

           *p++ = 1;

           *p++ = 1;

           *p++ = 1;

           *p++ = 1;

           *p++ = 1;

           *p++ = 1;

     }while( i-- );

We write code like this expecting STM can be used to do some optimization.

If the compiler can do this, what the option it need? I think this is not the default behaviour.