old-autovect-branch/gcc/testsuite/gcc.c-torture/execute/20020129-1.c

   1 /* This testcase failed at -O2 on IA-64, because scheduling did not take
   2    into account conditional execution when using cselib for alias
   3    analysis.  */
   4
   5 struct D { int d1; struct D *d2; };
   6 struct C { struct D c1; long c2, c3, c4, c5, c6; };
   7 struct A { struct A *a1; struct C *a2; };
   8 struct B { struct C b1; struct A *b2; };
   9
  10 extern void abort (void);
  11 extern void exit (int);
  12
  13 void
  14 foo (struct B *x, struct B *y)
  15 {
  16   if (x->b2 == 0)
  17     {
  18       struct A *a;
  19
  20       x->b2 = a = y->b2;
  21       y->b2 = 0;
  22       for (; a; a = a->a1)
  23         a->a2 = &x->b1;
  24     }
  25
  26   if (y->b2 != 0)
  27     abort ();
  28
  29   if (x->b1.c3 == -1)
  30     {
  31       x->b1.c3 = y->b1.c3;
  32       x->b1.c4 = y->b1.c4;
  33       y->b1.c3 = -1;
  34       y->b1.c4 = 0;
  35     }
  36
  37   if (y->b1.c3 != -1)
  38     abort ();
  39 }
  40
  41 struct B x, y;
  42
  43 int main ()
  44 {
  45   y.b1.c1.d1 = 6;
  46   y.b1.c3 = 145;
  47   y.b1.c4 = 2448;
  48   x.b1.c3 = -1;
  49   foo (&x, &y);
  50   exit (0);
  51 }