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/* Source for debugging optimimzed code test.

    cc -g -O -o optimize optimize.c

*/

int callee();

int test_opt;

int main()

{

   int a,b,c,d,e,f,g,h;

   a = 10;;

   /* Value propagate

    */

   b = 2 * a + 1;

   c = 3 * b + 2;

   /* Re-use expressions

    */

   d = (2 * a + 1) * (3 * b + 2);

   e = (2 * a + 1) * (3 * b + 2);

   /* Create dead stores--do lines still exist?

    */

   d = (2 * a + 1) * (3 * b + 2);

   e = (2 * a + 1) * (3 * b + 2);

   d = (2 * a + 1) * (3 * b + 2);

   e = (2 * a + 1) * (3 * b + 2);

   /* Alpha and psi motion

    */

   if( test_opt ) {

       f = e - d;

       f = f--;

   }

   else {

       f = e - d;

       f = f + d * e;

   }

   /* Chi and Rho motion

    */

   h = 0;

   do {

       h++;

       a = b * c + d * e;  /* Chi */

       f = f + d * e;

       g = f + d * e;      /* Rho */

       callee( g+1 );

       test_opt = (test_opt != 1);  /* Cycles */

   } while( g && h < 10);

   /* Opps for tail recursion, unrolling,

    * folding, evaporating

    */

   for( a = 0; a < 100; a++ ) {

       callee( callee ( callee( a )));

       callee( callee ( callee( a )));

       callee( callee ( callee( a )));

   }

   return callee( test_opt );

}

/* defined late to keep line numbers the same

*/

int callee( x )

    int x;      /* not used! */

{

    test_opt++; /* side effect */

    return test_opt;

}

/* end */