gcc/testsuite/gcc.dg/pr56144.c

   1 /* PR rtl-optimization/56144 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O" } */
   4
   5 int a;
   6 union U0 { volatile unsigned f2, f4; };
   7 volatile int b;
   8 static union U0 c;
   9 volatile unsigned d, f;
  10 volatile int e, g, h, i, j, k, l, m, n, o, p;
  11 int
  12 main ()
  13 {
  14   a = b;
  15   a += c.f2;
  16   a += c.f4;
  17   unsigned q = h;
  18   a += q;
  19   q = g;
  20   a += q;
  21   a += f;
  22   q = e;
  23   a += q;
  24   a += d;
  25   a += 2L;
  26   a += j;
  27   a += i;
  28   a += k;
  29   a += p;
  30   a += o;
  31   a += n;
  32   a += m;
  33   a += l;
  34   return 0;
  35 }