1 // RUN: %clang_cc1 %s -triple x86_64-unknown-unknown -emit-llvm -o - | FileCheck %s
2
3 struct P1 { char x[6]; } g1 = { "foo" };
4 struct LP1 { struct P1 p1; };
5
6 struct P2 { int a, b, c; } g2 = { 1, 2, 3 };
7 struct LP2 { struct P2 p2; };
8 struct LP2P2 { struct P2 p1, p2; };
9 union UP2 { struct P2 p2; };
10
11 struct LP3 { struct P1 p1[2]; } g3 = { { "dog" }, { "cat" } };
12 struct LLP3 { struct LP3 l3; };
13 union ULP3 { struct LP3 l3; };
14
15 // CHECK-LABEL: test1
test1(void)16 void test1(void)
17 {
18 // CHECK: call void @llvm.memcpy{{.*}}%struct.P1, %struct.P1* @g1{{.*}}i64 6, i32 {{[0-9]}}, i1 false)
19 // CHECK: store i8 120, i8* %
20
21 struct LP1 l = { .p1 = g1, .p1.x[2] = 'x' };
22 }
23
24 // CHECK-LABEL: test2
test2(void)25 void test2(void)
26 {
27 // CHECK: call void @llvm.memcpy{{.*}}%struct.P1, %struct.P1* @g1{{.*}}i64 6, i32 {{[0-9]}}, i1 false)
28 // CHECK: store i8 114, i8* %
29
30 struct LP1 l = { .p1 = g1, .p1.x[1] = 'r' };
31 }
32
33 // CHECK-LABEL: test3
test3(void)34 void test3(void)
35 {
36 // CHECK: call void @llvm.memcpy{{.*}}%struct.P2* @g2{{.*}}i64 12, i32 {{[0-9]}}, i1 false)
37 // CHECK: store i32 10, i32* %
38
39 struct LP2 l = { .p2 = g2, .p2.b = 10 };
40 }
41
42 // CHECK-LABEL: get235
get235()43 struct P2 get235()
44 {
45 struct P2 p = { 2, 3, 5 };
46 return p;
47 }
48
49 // CHECK-LABEL: get456789
get456789()50 struct LP2P2 get456789()
51 {
52 struct LP2P2 l = { { 4, 5, 6 }, { 7, 8, 9 } };
53 return l;
54 }
55
56 // CHECK-LABEL: get123
get123()57 union UP2 get123()
58 {
59 union UP2 u = { { 1, 2, 3 } };
60 return u;
61 }
62
63 // CHECK-LABEL: test4
test4(void)64 void test4(void)
65 {
66 // CHECK: [[CALL:%[a-z0-9]+]] = call {{.*}}@get123()
67 // CHECK: store{{.*}}[[CALL]], {{.*}}[[TMP0:%[a-z0-9]+]]
68 // CHECK: [[TMP1:%[a-z0-9]+]] = bitcast {{.*}}[[TMP0]]
69 // CHECK: call void @llvm.memcpy{{.*}}[[TMP1]], i64 12, i32 {{[0-9]}}, i1 false)
70 // CHECK: store i32 100, i32* %
71
72 struct LUP2 { union UP2 up; } var = { get123(), .up.p2.a = 100 };
73 }
74
75 // CHECK-LABEL: test5
test5(void)76 void test5(void)
77 {
78 // .l3 = g3
79 // CHECK: call void @llvm.memcpy{{.*}}%struct.LP3, %struct.LP3* @g3{{.*}}i64 12, i32 {{[0-9]}}, i1 false)
80
81 // .l3.p1 = { [0] = g1 } implicitly sets [1] to zero
82 // CHECK: call void @llvm.memcpy{{.*}}%struct.P1, %struct.P1* @g1{{.*}}i64 6, i32 {{[0-9]}}, i1 false)
83 // CHECK: getelementptr{{.*}}%struct.P1, %struct.P1*{{.*}}i64 1
84 // CHECK: call void @llvm.memset{{.*}}i8 0, i64 6, i32 {{[0-9]}}, i1 false)
85
86 // .l3.p1[1].x[1] = 'x'
87 // CHECK: store i8 120, i8* %
88
89 struct LLP3 var = { .l3 = g3, .l3.p1 = { [0] = g1 }, .l3.p1[1].x[1] = 'x' };
90 }
91
92 // CHECK-LABEL: test6
test6(void)93 void test6(void)
94 {
95 // CHECK: [[LP:%[a-z0-9]+]] = getelementptr{{.*}}%struct.LLP2P2, %struct.LLP2P2*{{.*}}, i32 0, i32 0
96 // CHECK: call {{.*}}get456789(%struct.LP2P2* {{.*}}[[LP]])
97
98 // CHECK: [[CALL:%[a-z0-9]+]] = call {{.*}}@get235()
99 // CHECK: store{{.*}}[[CALL]], {{.*}}[[TMP0:%[a-z0-9]+]]
100 // CHECK: [[TMP1:%[a-z0-9]+]] = bitcast {{.*}}[[TMP0]]
101 // CHECK: call void @llvm.memcpy{{.*}}[[TMP1]], i64 12, i32 {{[0-9]}}, i1 false)
102
103 // CHECK: store i32 10, i32* %
104
105 struct LLP2P2 { struct LP2P2 lp; } var = { get456789(),
106 .lp.p1 = get235(),
107 .lp.p1.b = 10 };
108 }
109