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
|
// RUN: %clang_cc1 -std=c2y -triple x86_64-apple-darwin -Wno-objc-root-class -emit-llvm -o - %s | FileCheck %s
int g(id x);
// CHECK-LABEL: define void @f1(ptr {{.*}} %y)
// CHECK: entry:
// CHECK: %y.addr = alloca ptr, align 8
// CHECK: %x1 = alloca ptr, align 8
// CHECK: %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
// CHECK: %items.ptr = alloca [16 x ptr], align 8
// CHECK: store ptr %y, ptr %y.addr, align 8
// CHECK: br label %x
// CHECK: x:
// CHECK: call void @llvm.memset.p0.i64(ptr align 8 %state.ptr, i8 0, i64 64, i1 false)
// CHECK: %0 = load ptr, ptr %y.addr, align 8
// CHECK: %1 = load ptr, ptr @OBJC_SELECTOR_REFERENCES_, align 8
// CHECK: %call = call i64 @objc_msgSend(ptr {{.*}} %0, ptr {{.*}} %1, ptr {{.*}} %state.ptr, ptr {{.*}} %items.ptr, i64 {{.*}} 16)
// CHECK: %iszero = icmp eq i64 %call, 0
// CHECK: br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
// CHECK: forcoll.loopinit:
// CHECK: %mutationsptr.ptr = getelementptr inbounds nuw %struct.__objcFastEnumerationState, ptr %state.ptr, i32 0, i32 2
// CHECK: %mutationsptr = load ptr, ptr %mutationsptr.ptr, align 8
// CHECK: %forcoll.initial-mutations = load i64, ptr %mutationsptr, align 8
// CHECK: br label %forcoll.loopbody
// CHECK: forcoll.loopbody:
// CHECK: %forcoll.index = phi i64 [ 0, %forcoll.loopinit ], [ %6, %forcoll.next ], [ 0, %forcoll.refetch ]
// CHECK: %forcoll.count = phi i64 [ %call, %forcoll.loopinit ], [ %forcoll.count, %forcoll.next ], [ %call8, %forcoll.refetch ]
// CHECK: %mutationsptr2 = load ptr, ptr %mutationsptr.ptr, align 8
// CHECK: %statemutations = load i64, ptr %mutationsptr2, align 8
// CHECK: %2 = icmp eq i64 %statemutations, %forcoll.initial-mutations
// CHECK: br i1 %2, label %forcoll.notmutated, label %forcoll.mutated
// CHECK: forcoll.mutated:
// CHECK: call void @objc_enumerationMutation(ptr {{.*}} %0)
// CHECK: br label %forcoll.notmutated
// CHECK: forcoll.notmutated:
// CHECK: %stateitems.ptr = getelementptr inbounds nuw %struct.__objcFastEnumerationState, ptr %state.ptr, i32 0, i32 1
// CHECK: %stateitems = load ptr, ptr %stateitems.ptr, align 8
// CHECK: %currentitem.ptr = getelementptr inbounds ptr, ptr %stateitems, i64 %forcoll.index
// CHECK: %3 = load ptr, ptr %currentitem.ptr, align 8
// CHECK: store ptr %3, ptr %x1, align 8
// CHECK: %4 = load ptr, ptr %x1, align 8
// CHECK: %call3 = call i32 @g(ptr {{.*}} %4)
// CHECK: %tobool = icmp ne i32 %call3, 0
// CHECK: br i1 %tobool, label %if.then, label %if.end
// CHECK: if.then:
// CHECK: br label %forcoll.end
// CHECK: if.end:
// CHECK: %5 = load ptr, ptr %x1, align 8
// CHECK: %call4 = call i32 @g(ptr {{.*}} %5)
// CHECK: %tobool5 = icmp ne i32 %call4, 0
// CHECK: br i1 %tobool5, label %if.then6, label %if.end7
// CHECK: if.then6:
// CHECK: br label %forcoll.next
// CHECK: if.end7:
// CHECK: br label %forcoll.next
// CHECK: forcoll.next:
// CHECK: %6 = add nuw i64 %forcoll.index, 1
// CHECK: %7 = icmp ult i64 %6, %forcoll.count
// CHECK: br i1 %7, label %forcoll.loopbody, label %forcoll.refetch
// CHECK: forcoll.refetch:
// CHECK: %8 = load ptr, ptr @OBJC_SELECTOR_REFERENCES_, align 8
// CHECK: %call8 = call i64 @objc_msgSend(ptr {{.*}} %0, ptr {{.*}} %8, ptr {{.*}} %state.ptr, ptr {{.*}} %items.ptr, i64 {{.*}} 16)
// CHECK: %9 = icmp eq i64 %call8, 0
// CHECK: br i1 %9, label %forcoll.empty, label %forcoll.loopbody
// CHECK: forcoll.empty:
// CHECK: br label %forcoll.end
// CHECK: forcoll.end:
// CHECK: ret void
void f1(id y) {
x: for (id x in y) {
if (g(x)) break x;
if (g(x)) continue x;
}
}
// CHECK-LABEL: define void @f2(ptr {{.*}} %y)
// CHECK: entry:
// CHECK: %y.addr = alloca ptr, align 8
// CHECK: %x = alloca ptr, align 8
// CHECK: %state.ptr = alloca %struct.__objcFastEnumerationState, align 8
// CHECK: %items.ptr = alloca [16 x ptr], align 8
// CHECK: store ptr %y, ptr %y.addr, align 8
// CHECK: br label %a
// CHECK: a:
// CHECK: br label %while.cond
// CHECK: while.cond:
// CHECK: %0 = load ptr, ptr %y.addr, align 8
// CHECK: %call = call i32 @g(ptr {{.*}} %0)
// CHECK: %tobool = icmp ne i32 %call, 0
// CHECK: br i1 %tobool, label %while.body, label %while.end
// CHECK: while.body:
// CHECK: br label %b
// CHECK: b:
// CHECK: call void @llvm.memset.p0.i64(ptr align 8 %state.ptr, i8 0, i64 64, i1 false)
// CHECK: %1 = load ptr, ptr %y.addr, align 8
// CHECK: %2 = load ptr, ptr @OBJC_SELECTOR_REFERENCES_, align 8
// CHECK: %call1 = call i64 @objc_msgSend(ptr {{.*}} %1, ptr {{.*}} %2, ptr {{.*}} %state.ptr, ptr {{.*}} %items.ptr, i64 {{.*}} 16)
// CHECK: %iszero = icmp eq i64 %call1, 0
// CHECK: br i1 %iszero, label %forcoll.empty, label %forcoll.loopinit
// CHECK: forcoll.loopinit:
// CHECK: %mutationsptr.ptr = getelementptr inbounds nuw %struct.__objcFastEnumerationState, ptr %state.ptr, i32 0, i32 2
// CHECK: %mutationsptr = load ptr, ptr %mutationsptr.ptr, align 8
// CHECK: %forcoll.initial-mutations = load i64, ptr %mutationsptr, align 8
// CHECK: br label %forcoll.loopbody
// CHECK: forcoll.loopbody:
// CHECK: %forcoll.index = phi i64 [ 0, %forcoll.loopinit ], [ %9, %forcoll.next ], [ 0, %forcoll.refetch ]
// CHECK: %forcoll.count = phi i64 [ %call1, %forcoll.loopinit ], [ %forcoll.count, %forcoll.next ], [ %call17, %forcoll.refetch ]
// CHECK: %mutationsptr2 = load ptr, ptr %mutationsptr.ptr, align 8
// CHECK: %statemutations = load i64, ptr %mutationsptr2, align 8
// CHECK: %3 = icmp eq i64 %statemutations, %forcoll.initial-mutations
// CHECK: br i1 %3, label %forcoll.notmutated, label %forcoll.mutated
// CHECK: forcoll.mutated:
// CHECK: call void @objc_enumerationMutation(ptr {{.*}} %1)
// CHECK: br label %forcoll.notmutated
// CHECK: forcoll.notmutated:
// CHECK: %stateitems.ptr = getelementptr inbounds nuw %struct.__objcFastEnumerationState, ptr %state.ptr, i32 0, i32 1
// CHECK: %stateitems = load ptr, ptr %stateitems.ptr, align 8
// CHECK: %currentitem.ptr = getelementptr inbounds ptr, ptr %stateitems, i64 %forcoll.index
// CHECK: %4 = load ptr, ptr %currentitem.ptr, align 8
// CHECK: store ptr %4, ptr %x, align 8
// CHECK: %5 = load ptr, ptr %x, align 8
// CHECK: %call3 = call i32 @g(ptr {{.*}} %5)
// CHECK: %tobool4 = icmp ne i32 %call3, 0
// CHECK: br i1 %tobool4, label %if.then, label %if.end
// CHECK: if.then:
// CHECK: br label %while.end
// CHECK: if.end:
// CHECK: %6 = load ptr, ptr %x, align 8
// CHECK: %call5 = call i32 @g(ptr {{.*}} %6)
// CHECK: %tobool6 = icmp ne i32 %call5, 0
// CHECK: br i1 %tobool6, label %if.then7, label %if.end8
// CHECK: if.then7:
// CHECK: br label %while.cond
// CHECK: if.end8:
// CHECK: %7 = load ptr, ptr %x, align 8
// CHECK: %call9 = call i32 @g(ptr {{.*}} %7)
// CHECK: %tobool10 = icmp ne i32 %call9, 0
// CHECK: br i1 %tobool10, label %if.then11, label %if.end12
// CHECK: if.then11:
// CHECK: br label %forcoll.end
// CHECK: if.end12:
// CHECK: %8 = load ptr, ptr %x, align 8
// CHECK: %call13 = call i32 @g(ptr {{.*}} %8)
// CHECK: %tobool14 = icmp ne i32 %call13, 0
// CHECK: br i1 %tobool14, label %if.then15, label %if.end16
// CHECK: if.then15:
// CHECK: br label %forcoll.next
// CHECK: if.end16:
// CHECK: br label %forcoll.next
// CHECK: forcoll.next:
// CHECK: %9 = add nuw i64 %forcoll.index, 1
// CHECK: %10 = icmp ult i64 %9, %forcoll.count
// CHECK: br i1 %10, label %forcoll.loopbody, label %forcoll.refetch
// CHECK: forcoll.refetch:
// CHECK: %11 = load ptr, ptr @OBJC_SELECTOR_REFERENCES_, align 8
// CHECK: %call17 = call i64 @objc_msgSend(ptr {{.*}} %1, ptr {{.*}} %11, ptr {{.*}} %state.ptr, ptr {{.*}} %items.ptr, i64 {{.*}} 16)
// CHECK: %12 = icmp eq i64 %call17, 0
// CHECK: br i1 %12, label %forcoll.empty, label %forcoll.loopbody
// CHECK: forcoll.empty:
// CHECK: br label %forcoll.end
// CHECK: forcoll.end:
// CHECK: br label %while.cond
// CHECK: while.end:
// CHECK: ret void
void f2(id y) {
a: while (g(y)) {
b: for (id x in y) {
if (g(x)) break a;
if (g(x)) continue a;
if (g(x)) break b;
if (g(x)) continue b;
}
}
}
|
