gcc-4.9/gcc/testsuite/gcc.dg/builtin-unreachable-5.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-fab1" } */

int
foo (int a)
{
  if (a <= 0)
    {
    L1:
      __builtin_unreachable ();
    }

  if (a > 2)
    goto L1;

  return a > 0;
}

/* { dg-final { scan-tree-dump-times "if \\(" 0 "fab1" } } */
/* { dg-final { scan-tree-dump-times "goto" 0 "fab1" } } */
/* { dg-final { scan-tree-dump-times "L1:" 0 "fab1" } } */
/* { dg-final { scan-tree-dump-times "__builtin_unreachable" 0 "fab1" } } */
/* { dg-final { cleanup-tree-dump "fab1" } } */