1 // RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
8 // CHECK: @u = global %union.anon zeroinitializer
9 union { int i; float f; } u = { };
11 // CHECK: @u2 = global { i32, [4 x i8] } { i32 0, [4 x i8] undef }
12 union { int i; double f; } u2 = { };
14 // CHECK: @u3 = global %union.anon.1 zeroinitializer
15 union { double f; int i; } u3 = { };
17 // CHECK: @b = global [2 x i32] [i32 0, i32 22]
36 // Traditional C anonymous member init
37 struct ds ds0 = { { { .a = 0 } } };
38 // C1X lookup-based anonymous member init cases
39 struct ds ds1 = { { .a = 1 } };
40 struct ds ds2 = { { .b = 1 } };
41 struct ds ds3 = { .a = 0 };
42 // CHECK: @ds4 = global %struct.ds { %struct.anon.3 { %struct.anon zeroinitializer, i16 0, %struct.anon.2 { i16 1 } } }
43 struct ds ds4 = { .c = 1 };
44 struct ds ds5 = { { { .a = 0 } }, .b = 1 };
45 struct ds ds6 = { { .a = 0, .b = 1 } };
46 // CHECK: @ds7 = global %struct.ds { %struct.anon.3 { %struct.anon { i16 2 }, i16 3, %struct.anon.2 zeroinitializer } }
56 // <rdar://problem/10465114>
57 struct overwrite_string_struct1 {
58 __typeof(L"foo"[0]) L[6];
60 } overwrite_string1[] = { { { L"foo" }, 1 }, [0].L[2] = L'x'};
61 // CHECK: [6 x i32] [i32 102, i32 111, i32 120, i32 0, i32 0, i32 0], i32 1
62 struct overwrite_string_struct2 {
65 } overwrite_string2[] = { { { "foo" }, 1 }, [0].L[2] = 'x'};
66 // CHECK: [6 x i8] c"fox\00\00\00", i32 1
67 struct overwrite_string_struct3 {
70 } overwrite_string3[] = { { { "foo" }, 1 }, [0].L[2] = 'x'};
71 // CHECK: [3 x i8] c"fox", i32 1
72 struct overwrite_string_struct4 {
75 } overwrite_string4[] = { { { "foobar" }, 1 }, [0].L[2] = 'x'};
76 // CHECK: [3 x i8] c"fox", i32 1
77 struct overwrite_string_struct5 {
80 } overwrite_string5[] = { { { "foo" }, 1 }, [0].L[4] = 'y'};
81 // CHECK: [6 x i8] c"foo\00y\00", i32 1
84 // CHECK: @u1 = {{.*}} { i32 65535 }
85 union u_FFFF { char c; long l; } u1 = { .l = 0xFFFF };
89 typedef union u_16644 {
99 // CHECK: @union_16644_instance_0 = {{.*}} { i32 0, i32 0, i32 0, i32 3 } }
100 union_16644_t union_16644_instance_0 =
108 // CHECK: @union_16644_instance_1 = {{.*}} [i32 10, i32 0, i32 0, i32 0]
109 union_16644_t union_16644_instance_1 =
117 // CHECK: @union_16644_instance_2 = {{.*}} [i32 0, i32 20, i32 0, i32 0]
118 union_16644_t union_16644_instance_2 =
124 // CHECK: @union_16644_instance_3 = {{.*}} { i32 0, i32 31, i32 0, i32 0 }
125 union_16644_t union_16644_instance_3 =
133 // CHECK: @union_16644_instance_4 = {{.*}} { i32 5, i32 2, i32 0, i32 0 } {{.*}} [i32 0, i32 4, i32 0, i32 0]
134 union_16644_t union_16644_instance_4[2] =
142 // CHECK: @lab = global { [4 x i8], i32 } { [4 x i8] undef, i32 123 }
143 struct leading_anon_bitfield { int : 32; int n; } lab = { .n = 123 };
145 void test1(int argc, char **argv)
147 // CHECK: internal global %struct.foo { i8* null, i32 1024 }
148 static struct foo foo = {
152 // CHECK: bitcast %union.anon.4* %u2
153 // CHECK: call void @llvm.memset
154 union { int i; float f; } u2 = { };
156 // CHECK-NOT: call void @llvm.memset
157 union { int i; float f; } u3;