1 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fcxx-exceptions -fexceptions -O0 %s -emit-llvm -o - | FileCheck %s
2
3 extern "C" int printf(const char *, ...);
4
5 static int N;
6 struct S {
SS7 S()
8 __attribute__((nothrow)) { printf("%d: S()\n", ++N); }
~SS9 ~S() __attribute__((nothrow)) { printf("%d: ~S()\n", N--); }
10 int n[17];
11 };
12 // CHECK: [[struct_S:%.+]] = type { [17 x i32] }
print(int n,int a,int b,int c,int d)13 void print(int n, int a, int b, int c, int d) {
14 printf("n=%d\n,sizeof(S)=%d\nsizeof(array_t[0][0])=%d\nsizeof(array_t[0])=%d\nsizeof(array_t)=%d\n",
15 n, a, b, c, d);
16 if (n == 2)
17 throw(n);
18 }
19
test(int n)20 void test(int n) {
21 // CHECK: define void {{.*test.*}}(i32 [[n:%.+]]) #
22 // CHECK: [[n_addr:%.+]] = alloca
23 // CHECK-NEXT: [[saved_stack:%.+]] = alloca
24 // CHECK-NEXT: [[sizeof_S:%.+]] = alloca
25 // CHECK-NEXT: [[sizeof_array_t_0_0:%.+]] = alloca
26 // CHECK-NEXT: [[sizeof_array_t_0:%.+]] = alloca
27 // CHECK-NEXT: [[sizeof_array_t:%.+]] = alloca
28 // CHECK-NEXT: [[exn_slot:%.+]] = alloca i8*
29 // CHECK-NEXT: [[ehselector_slot:%.+]] = alloca i32
30 // CHECK-NEXT: store i32 [[n]], i32* [[n_addr]]
31 // CHECK-NEXT: [[t0:%.+]] = load i32, i32* [[n_addr]]
32 // CHECK-NEXT: [[t1:%.+]] = zext i32 [[t0]] to i64
33 // CHECK-NEXT: [[t2:%.+]] = load i32, i32* [[n_addr]]
34 // CHECK-NEXT: [[add:%.+]] = add nsw i32 [[t2]], 1
35 // CHECK-NEXT: [[t3:%.+]] = zext i32 [[add]] to i64
36 // CHECK-NEXT: [[t4:%.+]] = call i8* @llvm.stacksave()
37 // CHECK-NEXT: store i8* [[t4]], i8** [[saved_stack]]
38 // CHECK-NEXT: [[t5:%.+]] = mul nuw i64 [[t1]], [[t3]]
39 // CHECK-NEXT: [[vla:%.+]] = alloca [[struct_S]], i64 [[t5]]
40 // CHECK-NEXT: [[t6:%.+]] = mul nuw i64 [[t1]], [[t3]]
41 // CHECK-NEXT: [[isempty:%.+]] = icmp eq i64 [[t6]], 0
42 // CHECK-NEXT: br i1 [[isempty]], label %[[arrayctor_cont:.+]], label %[[new_ctorloop:.+]]
43
44 S array_t[n][n + 1];
45
46 // CHECK: [[new_ctorloop]]
47 // CHECK-NEXT: [[arrayctor_end:%.+]] = getelementptr inbounds [[struct_S]], [[struct_S]]* [[vla]], i64 [[t6]]
48 // CHECK-NEXT: br label %[[arrayctor_loop:.+]]
49
50 // CHECK: [[arrayctor_loop]]
51 // CHECK-NEXT: [[arrayctor_cur:%.+]] = phi [[struct_S]]* [ [[vla]], %[[new_ctorloop]] ], [ [[arrayctor_next:%.+]], %[[arrayctor_loop]] ]
52 // CHECK-NEXT: call void [[ctor:@.+]]([[struct_S]]* [[arrayctor_cur]])
53 // CHECK-NEXT: [[arrayctor_next]] = getelementptr inbounds [[struct_S]], [[struct_S]]* [[arrayctor_cur]], i64 1
54 // CHECK-NEXT: [[arrayctor_done:%.+]] = icmp eq [[struct_S]]* [[arrayctor_next]], [[arrayctor_end]]
55 // CHECK-NEXT: br i1 [[arrayctor_done]], label %[[arrayctor_cont]], label %[[arrayctor_loop]]
56
57 int sizeof_S = sizeof(S);
58 int sizeof_array_t_0_0 = sizeof(array_t[0][0]);
59 int sizeof_array_t_0 = sizeof(array_t[0]);
60 int sizeof_array_t = sizeof(array_t);
61 print(n, sizeof_S, sizeof_array_t_0_0, sizeof_array_t_0, sizeof_array_t);
62
63 // CHECK: [[arrayctor_cont]]
64 // CHECK-NEXT: store i32 68, i32* [[sizeof_S]]
65 // CHECK-NEXT: store i32 68, i32* [[sizeof_array_t_0_0]]
66 // CHECK: [[t8:%.+]] = mul nuw i64 68, [[t3]]
67 // CHECK-NEXT: [[conv:%.+]] = trunc i64 [[t8]] to i32
68 // CHECK-NEXT: store i32 [[conv]], i32* [[sizeof_array_t_0]]
69 // CHECK-NEXT: [[t9:%.+]] = mul nuw i64 [[t1]], [[t3]]
70 // CHECK-NEXT: [[t10:%.+]] = mul nuw i64 68, [[t9]]
71 // CHECK-NEXT: [[conv1:%.+]] = trunc i64 [[t10]] to i32
72 // CHECK-NEXT: store i32 [[conv1]], i32* [[sizeof_array_t]]
73 // CHECK-NEXT: [[t11:%.+]] = load i32, i32* [[n_addr:%.+]]
74 // CHECK-NEXT: [[t12:%.+]] = load i32, i32* [[sizeof_S]]
75 // CHECK-NEXT: [[t13:%.+]] = load i32, i32* [[sizeof_array_t_0_0]]
76 // CHECK-NEXT: [[t14:%.+]] = load i32, i32* [[sizeof_array_t_0]]
77 // CHECK-NEXT: [[t15:%.+]] = load i32, i32* [[sizeof_array_t]]
78 // CHECK-NEXT: invoke void @{{.*print.*}}(i32 [[t11]], i32 [[t12]], i32 [[t13]], i32 [[t14]], i32 [[t15]])
79 // CHECK-NEXT: to label %[[invoke_cont:.+]] unwind label %[[lpad:.+]]
80
81 // CHECK: [[invoke_cont]]
82 // CHECK-NEXT: [[t16:%.+]] = mul nuw i64 [[t1]], [[t3]]
83 // CHECK-NEXT: [[t17:%.+]] = getelementptr inbounds [[struct_S]], [[struct_S]]* [[vla]], i64 [[t16]]
84 // CHECK-NEXT: [[arraydestroy_isempty:%.+]] = icmp eq [[struct_S]]* [[vla]], [[t17]]
85 // CHECK-NEXT: br i1 [[arraydestroy_isempty]], label %[[arraydestroy_done2:.+]], label %[[arraydestroy_body:.+]]
86
87 // CHECK: [[arraydestroy_body]]
88 // CHECK-NEXT: [[arraydestroy_elementPast:%.+]] = phi [[struct_S]]* [ [[t17]], %[[invoke_cont]] ], [ [[arraydestroy_element:%.+]], %[[arraydestroy_body]] ]
89 // CHECK-NEXT: [[arraydestroy_element]] = getelementptr inbounds [[struct_S]], [[struct_S]]* [[arraydestroy_elementPast]]
90 // CHECK-NEXT: call void @[[dtor:.+]]([[struct_S]]* [[arraydestroy_element]])
91 // CHECK-NEXT: [[arraydestroy_done:%.+]] = icmp eq [[struct_S]]* [[arraydestroy_element]], [[vla]]
92 // CHECK-NEXT: br i1 [[arraydestroy_done]], label %[[arraydestroy_done2]], label %[[arraydestroy_body]]
93
94 // CHECK: [[arraydestroy_done2]]
95 // CHECK-NEXT: [[t17:%.+]] = load i8*, i8** [[saved_stack]]
96 // CHECK-NEXT: call void @llvm.stackrestore(i8* [[t17]])
97 // CHECK: ret void
98
99 // CHECK: [[lpad]]
100 // CHECK-NEXT: [[t19:%.+]] = landingpad { i8*, i32 }
101 // CHECK: [[t20:%.+]] = extractvalue { i8*, i32 } [[t19]], 0
102 // CHECK-NEXT: store i8* [[t20]], i8** [[exn_slot]]
103 // CHECK-NEXT: [[t21:%.+]] = extractvalue { i8*, i32 } [[t19]], 1
104 // CHECK-NEXT: store i32 [[t21]], i32* [[ehselector_slot]]
105 // CHECK-NEXT: [[t22:%.+]] = mul nuw i64 [[t1]], [[t3]]
106 // CHECK-NEXT: [[t23:%.+]] = getelementptr inbounds [[struct_S]], [[struct_S]]* [[vla]], i64 [[t22]]
107 // CHECK-NEXT: [[arraydestroy_isempty3:%.+]] = icmp eq [[struct_S]]* [[vla]], [[t23]]
108 // CHECK-NEXT: br i1 [[arraydestroy_isempty3]], label %[[arraydestroy_done8:.+]], label %[[arraydestroy_body4:.+]]
109
110 // CHECK: [[arraydestroy_body4]]
111 // CHECK: [[arraydestroy_elementPast5:%.+]] = phi [[struct_S]]* [ [[t23]], %[[lpad]] ], [ [[arraydestroy_element6:.+]], %[[arraydestroy_body4]] ]
112 // CHECK-NEXT: [[arraydestroy_element6]] = getelementptr inbounds [[struct_S]], [[struct_S]]* [[arraydestroy_elementPast5]], i64 -1
113 // CHECK-NEXT: call void @[[dtor]]([[struct_S]]* [[arraydestroy_element6]])
114 // CHECK-NEXT: [[arraydestroy_done7:%.+]] = icmp eq [[struct_S]]* [[arraydestroy_element6]], [[vla]]
115 // CHECK-NEXT: br i1 [[arraydestroy_done7]], label %[[arraydestroy_done8]], label %[[arraydestroy_body4]]
116
117 // CHECK: [[arraydestroy_done8]]
118 // CHECK-NEXT: br label %[[eh_resume:.+]]
119
120 // CHECK: [[eh_resume]]
121 // CHECK-NEXT: [[exn:%.+]] = load i8*, i8** [[exn_slot]]
122 // CHECK-NEXT: [[sel:%.+]] = load i32, i32* [[ehselector_slot]]
123 // CHECK-NEXT: [[lpad_val:%.+]] = insertvalue { i8*, i32 } undef, i8* [[exn]], 0
124 // CHECK-NEXT: [[lpad_val9:%.+]] = insertvalue { i8*, i32 } [[lpad_val]], i32 [[sel]], 1
125 // CHECK-NEXT: resume { i8*, i32 } [[lpad_val9]]
126 }
127
main()128 int main() {
129 try {
130 test(2);
131 } catch (int e) {
132 printf("expeption %d\n", e);
133 }
134 try {
135 test(3);
136 } catch (int e) {
137 printf("expeption %d", e);
138 }
139 }
140