gcc/testsuite/gcc.dg/tree-ssa/pr71408.c

   1 /* PR middle-end/71408 */
   2 /* { dg-do run } */
   3 /* { dg-options "-Os" } */
   4
   5 #if __SIZEOF_INT__ >= 4
   6 unsigned a, b;
   7
   8 struct S0
   9 {
  10   int f1:18;
  11   unsigned f3:4;
  12 };
  13 #else
  14 __UINT32_TYPE__ a, b;
  15
  16 struct S0
  17 {
  18   __INT32_TYPE__ f1:18;
  19   unsigned f3:4;
  20 };
  21 #endif
  22
  23 void fn1 ()
  24 {
  25   struct S0 c = { 7, 0 };
  26   if (c.f1)
  27     c.f3 = 3;
  28   a = -~c.f3;
  29   c.f3 = ~(c.f1 && c.f1);
  30   c.f1 = c.f3 * (c.f1 - (c.f1 - a % c.f1)) + ~c.f3 * -a;
  31   b = ~(c.f1 & a);
  32   if (b >= 4294967295)
  33     __builtin_abort ();
  34 }
  35
  36 int
  37 main ()
  38 {
  39   fn1 ();
  40   return 0;
  41 }