blob: 6937d25580ad02b88ba3a96dd4cc9cd1c0c49eca (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-isolate-paths -fdump-tree-phicprop1" } */
extern void foo(void *) __attribute__ ((__nonnull__ (1)));
int z;
void
com (int a)
{
foo (a == 42 ? &z : (void *) 0);
}
void
bar (void)
{
foo ((void *)0);
}
/* We testing that the path isolation code can take advantage of the
returns non-null attribute to isolate a path where NULL flows into
a return statement.
We also verify that after isolation phi-cprop simplifies the
return statement so that it returns &z directly.
/* { dg-final { scan-tree-dump-times "__builtin_trap" 2 "isolate-paths"} } */
/* { dg-final { scan-tree-dump-times "foo .&z.;" 1 "phicprop1"} } */
/* { dg-final { cleanup-tree-dump "isolate-paths" } } */
/* { dg-final { cleanup-tree-dump "phicprop1" } } */
|
