gcc/testsuite/gcc.target/powerpc/safe-indirect-jump-6.c

   1 /* { dg-do run } */
   2 /* { dg-additional-options "-mno-speculate-indirect-jumps" } */
   3 /* { dg-warning "'-mno-speculate-indirect-jumps' is deprecated" "" { target *-*-* } 0 } */
   4
   5 /* Test for deliberate misprediction of jump tables.  */
   6
   7 void __attribute__((noinline)) bar ()
   8 {
   9 }
  10
  11 int foo (int x)
  12 {
  13   int a;
  14
  15   switch (x)
  16     {
  17     default:
  18       a = -1;
  19       break;
  20     case 0:
  21       a = x * x + 3;
  22       break;
  23     case 1:
  24       a = x + 1;
  25       break;
  26     case 2:
  27       a = x + x;
  28       break;
  29     case 3:
  30       a = x << 3;
  31       break;
  32     case 4:
  33       a = x >> 1;
  34       break;
  35     case 5:
  36       a = x;
  37       break;
  38     case 6:
  39       a = 0;
  40       break;
  41     case 7:
  42       a = x * x + x;
  43       break;
  44     }
  45
  46   bar();
  47
  48   return a;
  49 }
  50
  51 int main ()
  52 {
  53   if (foo (0) != 3)
  54     __builtin_abort ();
  55
  56   if (foo (1) != 2)
  57     __builtin_abort ();
  58
  59   if (foo (2) != 4)
  60     __builtin_abort ();
  61
  62   if (foo (3) != 24)
  63     __builtin_abort ();
  64
  65   if (foo (4) != 2)
  66     __builtin_abort ();
  67
  68   if (foo (5) != 5)
  69     __builtin_abort ();
  70
  71   if (foo (6) != 0)
  72     __builtin_abort ();
  73
  74   if (foo (7) != 56)
  75     __builtin_abort ();
  76
  77   if (foo (8) != -1)
  78     __builtin_abort ();
  79
  80   return 0;
  81 }