1 | // RUN: %clang_cc1 -std=c++1y %s -triple x86_64-linux-gnu -emit-llvm -o - | FileCheck %s |
2 | |
3 | struct A { |
4 | int n = 0; |
5 | const char *p; |
6 | char k = p[n]; |
7 | int f(); |
8 | int x = f(); |
9 | union { |
10 | char c; |
11 | double d = 1.0; |
12 | }; |
13 | }; |
14 | |
15 | int f(); |
16 | |
17 | union B { |
18 | int a; |
19 | int f(); |
20 | int b = f(); |
21 | }; |
22 | |
23 | A a { .p = "foobar" }; |
24 | A b { 4, "bazquux", .x = 42, .c = 9 }; |
25 | A c { 1, 0, 'A', f(), { 3 } }; |
26 | |
27 | // CHECK: @[[STR_A:.*]] = {{.*}} [7 x i8] c"foobar\00" |
28 | // CHECK: @a = global {{.*}} zeroinitializer |
29 | |
30 | // @b has a constant initializer |
31 | // CHECK: @[[STR_B:.*]] = {{.*}} [8 x i8] c"bazquux\00" |
32 | // CHECK: @b = global {{.*}} i32 4, {{.*}} @[[STR_B]], {{.*}} i8 117, i32 42, {{.*}} i8 9 |
33 | |
34 | B x; |
35 | B y {}; |
36 | B z { 1 }; |
37 | // CHECK: @z = global {{.*}} { i32 1 } |
38 | |
39 | // Brace initialization should initialize the first field even though it is |
40 | // unnamed. |
41 | union C { |
42 | struct { |
43 | int C::*memptr; |
44 | }; |
45 | }; |
46 | |
47 | C n{}; |
48 | // CHECK: @n = global %union.C { %struct.anon { i64 -1 } }, align 8 |
49 | |
50 | // Initialization of 'a': |
51 | |
52 | // CHECK: store i32 0, i32* getelementptr inbounds ({{.*}} @a, i32 0, i32 0) |
53 | // CHECK: store i8* {{.*}} @[[STR_A]]{{.*}}, i8** getelementptr inbounds ({{.*}} @a, i32 0, i32 1) |
54 | // CHECK: load i8*, i8** getelementptr inbounds ({{.*}} @a, i32 0, i32 1) |
55 | // CHECK: load i32, i32* getelementptr inbounds ({{.*}} @a, i32 0, i32 0) |
56 | // CHECK: getelementptr inbounds i8, i8* %{{.*}}, {{.*}} %{{.*}} |
57 | // CHECK: store i8 %{{.*}}, i8* getelementptr inbounds ({{.*}} @a, i32 0, i32 2) |
58 | // CHECK: call i32 @_ZN1A1fEv({{.*}} @a) |
59 | // CHECK: store i32 %{{.*}}, i32* getelementptr inbounds ({{.*}}, {{.*}}* @a, i32 0, i32 3) |
60 | // CHECK: store double 1.000000e+00, double* getelementptr inbounds ({{.*}} @a, i32 0, i32 4, i32 0) |
61 | |
62 | // No dynamic initialization of 'b': |
63 | |
64 | // CHECK-NOT: @b |
65 | |
66 | // Initialization of 'c': |
67 | |
68 | // CHECK: store i32 1, i32* getelementptr inbounds ({{.*}} @c, i32 0, i32 0) |
69 | // CHECK: store i8* null, i8** getelementptr inbounds ({{.*}} @c, i32 0, i32 1) |
70 | // CHECK-NOT: load |
71 | // CHECK: store i8 65, i8* getelementptr inbounds ({{.*}} @c, i32 0, i32 2) |
72 | // CHECK: call i32 @_Z1fv() |
73 | // CHECK: store i32 %{{.*}}, i32* getelementptr inbounds ({{.*}}, {{.*}}* @c, i32 0, i32 3) |
74 | // CHECK-NOT: C1Ev |
75 | // CHECK: store i8 3, i8* {{.*}} @c, i32 0, i32 4) |
76 | |
77 | // CHECK: call void @_ZN1BC1Ev({{.*}} @x) |
78 | |
79 | // CHECK: call i32 @_ZN1B1fEv({{.*}} @y) |
80 | // CHECK: store i32 %{{.*}}, i32* getelementptr inbounds ({{.*}} @y, i32 0, i32 0) |
81 | |