gcc/testsuite/gcc.dg/ipa/pr85449.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -fno-early-inlining"  } */
   3
   4 int array[128];
   5
   6 volatile int v = 0;
   7 volatile int blah = 0;
   8
   9 int __attribute__((noipa))
  10 obscured_zero ()
  11 {
  12   return 0;
  13 }
  14
  15 int __attribute__((noipa))
  16 obscured_one ()
  17 {
  18   return 1;
  19 }
  20
  21 int __attribute__((noipa))
  22 obscured_two ()
  23 {
  24   return 2;
  25 }
  26
  27 static
  28 void cb1 (int l)
  29 {
  30   v = 25;
  31 }
  32
  33 static
  34 void cb2 (int l)
  35 {
  36   v = 125;
  37 }
  38
  39 typedef void (*silly_callback)(int);
  40
  41 silly_callback __attribute__((noipa))
  42 get_callback ()
  43 {
  44   return cb1;
  45 }
  46
  47 static void
  48 f (int c, int l, silly_callback p)
  49 {
  50   int i;
  51
  52   for (i = 0; i < c; i++)
  53     array[i] = 455;
  54
  55   for (i = 0; i < 200; i++)
  56     {
  57       p (l);
  58       if (obscured_one ())
  59         break;
  60     }
  61
  62   if (l > 0)
  63     f (c * 2, l - 1, p);
  64   blah = l;
  65 }
  66
  67 int
  68 main (int argc, char *argv[])
  69 {
  70   int i;
  71   for (i = 0; i < 1000; i++)
  72     {
  73       f (0, 5, get_callback ());
  74       if (v != 25)
  75         __builtin_abort ();
  76       if (obscured_one ())
  77         break;
  78     }
  79
  80   for (i = 0; i < 1000; i++)
  81     {
  82       f (obscured_zero (), obscured_two (), cb2);
  83       if (v != 125)
  84         __builtin_abort ();
  85       if (obscured_one ())
  86         break;
  87     }
  88
  89   return 0;
  90 }