summaryrefslogtreecommitdiffstats
path: root/test/Analysis/LazyCallGraph/basic.ll
blob: b8108d99ed6f50905420fd9bfb1735f5a01b3e15 (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
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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
; RUN: opt -disable-output -passes=print-cg %s 2>&1 | FileCheck %s
;
; Basic validation of the call graph analysis used in the new pass manager.

define void @f() {
; CHECK-LABEL: Call edges in function: f
; CHECK-NOT: ->

entry:
  ret void
}

; A bunch more functions just to make it easier to test several call edges at once.
define void @f1() {
  ret void
}
define void @f2() {
  ret void
}
define void @f3() {
  ret void
}
define void @f4() {
  ret void
}
define void @f5() {
  ret void
}
define void @f6() {
  ret void
}
define void @f7() {
  ret void
}
define void @f8() {
  ret void
}
define void @f9() {
  ret void
}
define void @f10() {
  ret void
}
define void @f11() {
  ret void
}
define void @f12() {
  ret void
}

declare i32 @__gxx_personality_v0(...)

define void @test0() {
; CHECK-LABEL: Call edges in function: test0
; CHECK-NEXT: -> f
; CHECK-NOT: ->

entry:
  call void @f()
  call void @f()
  call void @f()
  call void @f()
  ret void
}

define void ()* @test1(void ()** %x) {
; CHECK-LABEL: Call edges in function: test1
; CHECK-NEXT: -> f12
; CHECK-NEXT: -> f11
; CHECK-NEXT: -> f10
; CHECK-NEXT: -> f7
; CHECK-NEXT: -> f9
; CHECK-NEXT: -> f8
; CHECK-NEXT: -> f6
; CHECK-NEXT: -> f5
; CHECK-NEXT: -> f4
; CHECK-NEXT: -> f3
; CHECK-NEXT: -> f2
; CHECK-NEXT: -> f1
; CHECK-NOT: ->

entry:
  br label %next

dead:
  br label %next

next:
  phi void ()* [ @f1, %entry ], [ @f2, %dead ]
  select i1 true, void ()* @f3, void ()* @f4
  store void ()* @f5, void ()** %x
  call void @f6()
  call void (void ()*, void ()*)* bitcast (void ()* @f7 to void (void ()*, void ()*)*)(void ()* @f8, void ()* @f9)
  invoke void @f10() to label %exit unwind label %unwind

exit:
  ret void ()* @f11

unwind:
  %res = landingpad { i8*, i32 } personality i32 (...)* @__gxx_personality_v0
          cleanup
  resume { i8*, i32 } { i8* bitcast (void ()* @f12 to i8*), i32 42 }
}

@g = global void ()* @f1
@g1 = global [4 x void ()*] [void ()* @f2, void ()* @f3, void ()* @f4, void ()* @f5]
@g2 = global {i8, void ()*, i8} {i8 1, void ()* @f6, i8 2}
@h = constant void ()* @f7

define void @test2() {
; CHECK-LABEL: Call edges in function: test2
; CHECK-NEXT: -> f7
; CHECK-NEXT: -> f6
; CHECK-NEXT: -> f5
; CHECK-NEXT: -> f4
; CHECK-NEXT: -> f3
; CHECK-NEXT: -> f2
; CHECK-NEXT: -> f1
; CHECK-NOT: ->

  load i8** bitcast (void ()** @g to i8**)
  load i8** bitcast (void ()** getelementptr ([4 x void ()*]* @g1, i32 0, i32 2) to i8**)
  load i8** bitcast (void ()** getelementptr ({i8, void ()*, i8}* @g2, i32 0, i32 1) to i8**)
  load i8** bitcast (void ()** @h to i8**)
  ret void
}

; Verify the SCCs formed.
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f7
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f6
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f5
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f4
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f3
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f2
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f1
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    test2
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f12
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f11
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f10
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f9
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f8
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    test1
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    f
;
; CHECK-LABEL: SCC with 1 functions:
; CHECK-NEXT:    test0