gcc/testsuite/gcc.target/powerpc/safe-indirect-jump-3.c

   1 /* { dg-do compile } */
   2 /* { dg-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 bar (void);
   8
   9 int foo (int x)
  10 {
  11   int a;
  12
  13   switch (x)
  14     {
  15     default:
  16       a = -1;
  17       break;
  18     case 0:
  19       a = x * x;
  20       break;
  21     case 1:
  22       a = x + 1;
  23       break;
  24     case 2:
  25       a = x + x;
  26       break;
  27     case 3:
  28       a = x << 3;
  29       break;
  30     case 4:
  31       a = x >> 1;
  32       break;
  33     case 5:
  34       a = x;
  35       break;
  36     case 6:
  37       a = 0;
  38       break;
  39     case 7:
  40       a = x * x + x;
  41       break;
  42     }
  43
  44   bar();
  45
  46   return a;
  47 }
  48
  49 /* The following assumes CR7 as the first chosen volatile.  */
  50
  51 /* { dg-final { scan-assembler "crset 30" } } */
  52 /* { dg-final { scan-assembler "beqctr- 7" } } */
  53 /* { dg-final { scan-assembler {b \$} } } */