gcc/testsuite/gcc.dg/pr48774.c

   1 /* PR target/48774 */
   2 /* { dg-do run } */
   3 /* { dg-options "-O2 -funroll-loops" } */
   4
   5 extern void abort (void);
   6 unsigned long int s[24]
   7   = { 12, ~1, 12, ~2, 12, ~4, 12, ~8, 12, ~16, 12, ~32,
   8       12, ~64, 12, ~128, 12, ~256, 12, ~512, 12, ~1024, 12, ~2048 };
   9 struct { int n; unsigned long *e[12]; } g
  10   = { 12, { &s[0], &s[2], &s[4], &s[6], &s[8], &s[10], &s[12], &s[14],
  11             &s[16], &s[18], &s[20], &s[22] } };
  12 int c[12];
  13
  14 __attribute__((noinline, noclone)) void
  15 foo (void)
  16 {
  17   int i, j;
  18   for (i = 0; i < g.n; i++)
  19     for (j = 0; j < g.n; j++)
  20       {
  21         if (i == j && j < g.e[0][0] && (g.e[i][1] & (1UL << j)))
  22           abort ();
  23         if (j < g.e[0][0] && (g.e[i][1] & (1UL << j)))
  24           c[i]++;
  25       }
  26 }
  27
  28 int
  29 main ()
  30 {
  31   int i;
  32   asm volatile ("" : "+m" (s), "+m" (g), "+m" (c));
  33   foo ();
  34   for (i = 0; i < 12; i++)
  35     if (c[i] != 11)
  36       abort ();
  37   return 0;
  38 }