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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
| // RUN: %clang_analyze_cc1 -std=c++14 %s \
// RUN: -analyzer-checker=debug.DumpDominators \
// RUN: -analyzer-checker=debug.DumpPostDominators \
// RUN: -analyzer-checker=debug.DumpControlDependencies \
// RUN: 2>&1 | FileCheck %s
bool coin();
namespace pr42041_unreachable_cfg_successor {
enum Kind {
A
};
void f() {
switch(Kind{}) {
case A:
break;
}
}
} // end of namespace pr42041_unreachable_cfg_successor
// [B3 (ENTRY)] -> [B1] -> [B2] -> [B0 (EXIT)]
// CHECK: Control dependencies (Node#,Dependency#):
// CHECK-NEXT: Immediate dominance tree (Node#,IDom#):
// CHECK-NEXT: (0,2)
// CHECK-NEXT: (1,3)
// CHECK-NEXT: (2,1)
// CHECK-NEXT: (3,3)
// CHECK-NEXT: Immediate post dominance tree (Node#,IDom#):
// CHECK-NEXT: (0,0)
// CHECK-NEXT: (1,2)
// CHECK-NEXT: (2,0)
// CHECK-NEXT: (3,1)
void funcWithBranch() {
int x = 0;
if (coin()) {
if (coin()) {
x = 5;
}
int j = 10 / x;
(void)j;
}
}
// 1st if 2nd if
// [B5 (ENTRY)] -> [B4] -> [B3] -> [B2] -> [B1] -> [B0 (EXIT)]
// \ \ / /
// \ -------------> /
// ------------------------------>
// CHECK: Control dependencies (Node#,Dependency#):
// CHECK-NEXT: (1,4)
// CHECK-NEXT: (2,3)
// CHECK-NEXT: (2,4)
// CHECK-NEXT: (3,4)
// CHECK-NEXT: Immediate dominance tree (Node#,IDom#):
// CHECK-NEXT: (0,4)
// CHECK-NEXT: (1,3)
// CHECK-NEXT: (2,3)
// CHECK-NEXT: (3,4)
// CHECK-NEXT: (4,5)
// CHECK-NEXT: (5,5)
// CHECK-NEXT: Immediate post dominance tree (Node#,IDom#):
// CHECK-NEXT: (0,0)
// CHECK-NEXT: (1,0)
// CHECK-NEXT: (2,1)
// CHECK-NEXT: (3,1)
// CHECK-NEXT: (4,0)
// CHECK-NEXT: (5,4)
|