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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
(module
(func $zed (param i32)
(call $zed (local.get 0))
)
(func "foo1" (param $x i32)
(block $a
(block $b
(block $c
(block $d
(block $e
(br_table $a $b $c $d $e (local.get $x))
)
(call $zed (i32.const -1))
(call $zed (i32.const -2))
;; implicit fallthrough - can be done in the switch too
)
(call $zed (i32.const -3))
(call $zed (i32.const -4))
(br $c) ;; branch which is identical to a fallthrough
)
(call $zed (i32.const -5))
(call $zed (i32.const -6))
(br $a) ;; skip some blocks - can't do this in a switch!
)
(call $zed (i32.const -7))
(call $zed (i32.const -8))
(br $a)
)
(call $zed (i32.const -9))
(call $zed (i32.const -10))
)
(func "foo2" (param $x i32)
(block $a
(block $b
(block $c
(block $d
(block $e
(br_table $a $b $c $d $e (local.get $x))
)
(call $zed (i32.const -1))
(call $zed (i32.const -2))
(br $c) ;; skip some blocks - can't do this in a switch!
)
(call $zed (i32.const -3))
(call $zed (i32.const -4))
(br $c) ;; branch which is identical to a fallthrough
)
(call $zed (i32.const -5))
(call $zed (i32.const -6))
(br $a) ;; skip some blocks - can't do this in a switch!
)
(call $zed (i32.const -7))
(call $zed (i32.const -8))
(br $a)
)
(call $zed (i32.const -9))
(call $zed (i32.const -10))
)
(func "foo3" (param $x i32)
(block $a
(block $b
(block $c
(block $d
(block $e
(br_table $a $b $c $d $e (local.get $x))
)
(br_if $c (local.get $x))
(call $zed (i32.const -1))
(call $zed (i32.const -2))
)
(call $zed (i32.const -3))
(call $zed (i32.const -4))
(br $c) ;; branch which is identical to a fallthrough
)
(call $zed (i32.const -5))
(call $zed (i32.const -6))
(br $a) ;; skip some blocks - can't do this in a switch!
)
(call $zed (i32.const -7))
(call $zed (i32.const -8))
(br $a)
)
(call $zed (i32.const -9))
(call $zed (i32.const -10))
)
(func "foo4" (param $x i32)
(block $a
(block $b
(block $c
(block $d
(br_if $c (local.get $x))
(block $e
(br_table $a $b $c $d $e (local.get $x))
)
(br_if $c (local.get $x))
(call $zed (i32.const -1))
(call $zed (i32.const -2))
)
(call $zed (i32.const -3))
(call $zed (i32.const -4))
(br $c) ;; branch which is identical to a fallthrough
)
(call $zed (i32.const -5))
(call $zed (i32.const -6))
(br $a) ;; skip some blocks - can't do this in a switch!
)
(call $zed (i32.const -7))
(call $zed (i32.const -8))
(br $a)
)
(call $zed (i32.const -9))
(call $zed (i32.const -10))
)
)
|
