gcc/testsuite/gcc.target/s390/nobp-table-jump-z10.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O3 -march=z10 -mzarch --save-temps -mindirect-branch-jump=thunk -mindirect-branch-table" } */
   3 /* case-values-threshold will be set to 20 by the back-end when jump
   4    thunk are requested.  */
   5
   6 int __attribute__((noipa)) foo1 (void) { return 1; }
   7 int __attribute__((noipa)) foo2 (void) { return 2; }
   8 int __attribute__((noipa)) foo3 (void) { return 3; }
   9 int __attribute__((noipa)) foo4 (void) { return 4; }
  10 int __attribute__((noipa)) foo5 (void) { return 5; }
  11 int __attribute__((noipa)) foo6 (void) { return 6; }
  12 int __attribute__((noipa)) foo7 (void) { return 7; }
  13 int __attribute__((noipa)) foo8 (void) { return 8; }
  14 int __attribute__((noipa)) foo9 (void) { return 9; }
  15 int __attribute__((noipa)) foo10 (void) { return 10; }
  16 int __attribute__((noipa)) foo11 (void) { return 11; }
  17 int __attribute__((noipa)) foo12 (void) { return 12; }
  18 int __attribute__((noipa)) foo13 (void) { return 13; }
  19 int __attribute__((noipa)) foo14 (void) { return 14; }
  20 int __attribute__((noipa)) foo15 (void) { return 15; }
  21 int __attribute__((noipa)) foo16 (void) { return 16; }
  22 int __attribute__((noipa)) foo17 (void) { return 17; }
  23 int __attribute__((noipa)) foo18 (void) { return 18; }
  24 int __attribute__((noipa)) foo19 (void) { return 19; }
  25 int __attribute__((noipa)) foo20 (void) { return 20; }
  26
  27
  28 int __attribute__((noipa))
  29 bar (int a)
  30 {
  31   int ret = 0;
  32
  33   switch (a)
  34     {
  35     case 1: ret = foo1 (); break;
  36     case 2: ret = foo2 (); break;
  37     case 3: ret = foo3 (); break;
  38     case 4: ret = foo4 (); break;
  39     case 5: ret = foo5 (); break;
  40     case 6: ret = foo6 (); break;
  41     case 7: ret = foo7 (); break;
  42     case 8: ret = foo8 (); break;
  43     case 9: ret = foo9 (); break;
  44     case 10: ret = foo10 (); break;
  45     case 11: ret = foo11 (); break;
  46     case 12: ret = foo12 (); break;
  47     case 13: ret = foo13 (); break;
  48     case 14: ret = foo14 (); break;
  49     case 15: ret = foo15 (); break;
  50     case 16: ret = foo16 (); break;
  51     case 17: ret = foo17 (); break;
  52     case 18: ret = foo18 (); break;
  53     case 19: ret = foo19 (); break;
  54     case 20: ret = foo20 (); break;
  55     default:
  56       __builtin_abort ();
  57     }
  58
  59   return ret;
  60 }
  61
  62 int
  63 main ()
  64 {
  65   if (bar (3) != 3)
  66     __builtin_abort ();
  67
  68   return 0;
  69 }
  70
  71 /* 1 x bar
  72 /* { dg-final { scan-assembler-times "exrl" 1 } } */
  73
  74 /* { dg-final { scan-assembler     "section\t.s390_indirect_jump" } } */
  75 /* { dg-final { scan-assembler-not "section\t.s390_indirect_call" } } */
  76 /* { dg-final { scan-assembler-not "section\t.s390_return_fromreg" } } */
  77 /* { dg-final { scan-assembler-not "section\t.s390_return_frommem" } } */