gcc/testsuite/gcc.dg/pr92301.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3" } */
   3
   4 unsigned int m;
   5
   6 #define N 128
   7 unsigned int a[N];
   8
   9 unsigned int
  10 __attribute__((noipa))
  11 df_count_refs (_Bool include_defs)
  12 {
  13   int size = 0;
  14
  15   for (unsigned int regno = 0; regno < m; regno++)
  16     if (include_defs)
  17       size += a[regno];
  18   return size;
  19 }
  20
  21 int main(int argc, char **argv)
  22 {
  23   for (unsigned i = 0; i < N; i++)
  24     a[i] = i;
  25
  26   if (argc < 2)
  27     m = 17;
  28
  29   unsigned int r = df_count_refs(1);
  30   __builtin_printf ("r: %d\n", r);
  31   if (r != 136)
  32     __builtin_abort ();
  33
  34   return 0;
  35 }