1 // RUN: %clang_cc1 -no-opaque-pointers -std=c++11 -triple armv7-none-eabi -emit-llvm -o - %s | FileCheck %s
2
3 struct X {
4 X();
5 X(const X&);
6 X(const char*);
7 ~X();
8 };
9
10 struct Y {
11 int i;
12 X x;
13 };
14
15 // CHECK: @.compoundliteral = internal global [5 x i32] [i32 1, i32 2, i32 3, i32 4, i32 5], align 4
16 // CHECK: @q ={{.*}} global i32* getelementptr inbounds ([5 x i32], [5 x i32]* @.compoundliteral, i32 0, i32 0), align 4
17
18 // CHECK-LABEL: define{{.*}} i32 @_Z1fv()
f()19 int f() {
20 // CHECK: [[LVALUE:%[a-z0-9.]+]] = alloca
21 // CHECK-NEXT: [[I:%[a-z0-9]+]] = getelementptr inbounds {{.*}}, {{.*}}* [[LVALUE]], i32 0, i32 0
22 // CHECK-NEXT: store i32 17, i32* [[I]]
23 // CHECK-NEXT: [[X:%[a-z0-9]+]] = getelementptr inbounds {{.*}} [[LVALUE]], i32 0, i32 1
24 // CHECK-NEXT: call noundef %struct.X* @_ZN1XC1EPKc({{.*}}[[X]]
25 // CHECK-NEXT: [[I:%[a-z0-9]+]] = getelementptr inbounds {{.*}} [[LVALUE]], i32 0, i32 0
26 // CHECK-NEXT: [[RESULT:%[a-z0-9]+]] = load i32, i32*
27 // CHECK-NEXT: call noundef %struct.Y* @_ZN1YD1Ev
28 // CHECK-NEXT: ret i32 [[RESULT]]
29 return ((Y){17, "seventeen"}).i;
30 }
31
32 // CHECK-LABEL: define{{.*}} i32 @_Z1gv()
g()33 int g() {
34 // CHECK: store [2 x i32]* %{{[a-z0-9.]+}}, [2 x i32]** [[V:%[a-z0-9.]+]]
35 const int (&v)[2] = (int [2]) {1,2};
36
37 // CHECK: [[A:%[a-z0-9.]+]] = load [2 x i32]*, [2 x i32]** [[V]]
38 // CHECK-NEXT: [[A0ADDR:%[a-z0-9.]+]] = getelementptr inbounds [2 x i32], [2 x i32]* [[A]], i32 0, {{.*}} 0
39 // CHECK-NEXT: [[A0:%[a-z0-9.]+]] = load i32, i32* [[A0ADDR]]
40 // CHECK-NEXT: ret i32 [[A0]]
41 return v[0];
42 }
43
44 // GCC's compound-literals-in-C++ extension lifetime-extends a compound literal
45 // (or a C++11 list-initialized temporary!) if:
46 // - it is at global scope
47 // - it has array type
48 // - it has a constant initializer
49
50 struct Z { int i[3]; };
51 int *p = (Z){ {1, 2, 3} }.i;
52 // CHECK: define {{.*}}__cxx_global_var_init()
53 // CHECK: alloca %struct.Z
54 // CHECK: store i32* %{{.*}}, i32** @p
55
56 int *q = (int [5]){1, 2, 3, 4, 5};
57 // (constant initialization, checked above)
58
59 extern int n;
60 int *r = (int [5]){1, 2, 3, 4, 5} + n;
61 // CHECK-LABEL: define {{.*}}__cxx_global_var_init.1()
62 // CHECK: %[[PTR:.*]] = getelementptr inbounds i32, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @.compoundliteral.2, i32 0, i32 0), i32 %
63 // CHECK: store i32* %[[PTR]], i32** @r
64
65 int *PR21912_1 = (int []){} + n;
66 // CHECK-LABEL: define {{.*}}__cxx_global_var_init.3()
67 // CHECK: %[[PTR:.*]] = getelementptr inbounds i32, i32* getelementptr inbounds ([0 x i32], [0 x i32]* @.compoundliteral.4, i32 0, i32 0), i32 %
68 // CHECK: store i32* %[[PTR]], i32** @PR21912_1
69
70 union PR21912Ty {
71 long long l;
72 double d;
73 };
74 union PR21912Ty *PR21912_2 = (union PR21912Ty[]){{.d = 2.0}, {.l = 3}} + n;
75 // CHECK-LABEL: define {{.*}}__cxx_global_var_init.5()
76 // CHECK: %[[PTR:.*]] = getelementptr inbounds %union.PR21912Ty, %union.PR21912Ty* getelementptr inbounds ([2 x %union.PR21912Ty], [2 x %union.PR21912Ty]* bitcast (<{ { double }, %union.PR21912Ty }>* @.compoundliteral.6 to [2 x %union.PR21912Ty]*), i32 0, i32 0), i32 %
77 // CHECK: store %union.PR21912Ty* %[[PTR]], %union.PR21912Ty** @PR21912_2, align 4
78
79 // This compound literal should have local scope.
__anon77f2a75c0102null80 int computed_with_lambda = [] {
81 int *array = (int[]) { 1, 3, 5, 7 };
82 return array[0];
83 }();
84 // CHECK-LABEL: define internal noundef i32 @{{.*}}clEv
85 // CHECK: alloca [4 x i32]
86