xref: /minix3/external/bsd/llvm/dist/clang/test/CodeGen/ms_struct-bitfield.c (revision 0a6a1f1d05b60e214de2f05a7310ddd1f0e590e7) 
1*0a6a1f1dSLionel Sambuc // RUN: %clang_cc1 -emit-llvm -o - -triple x86_64-apple-darwin9 %s | FileCheck %s
2*0a6a1f1dSLionel Sambuc // RUN: %clang_cc1 -emit-llvm -o - -triple thumbv7-apple-ios -target-abi apcs-gnu %s | FileCheck %s -check-prefix=CHECK-ARM
3*0a6a1f1dSLionel Sambuc 
4f4a2713aSLionel Sambuc // rdar://8823265
5f4a2713aSLionel Sambuc 
6*0a6a1f1dSLionel Sambuc // Note that we're declaring global variables with these types,
7*0a6a1f1dSLionel Sambuc // triggering both Sema and IRGen struct layout.
8*0a6a1f1dSLionel Sambuc 
9f4a2713aSLionel Sambuc #define ATTR __attribute__((__ms_struct__))
10f4a2713aSLionel Sambuc 
11f4a2713aSLionel Sambuc struct
12f4a2713aSLionel Sambuc {
13f4a2713aSLionel Sambuc    char foo;
14f4a2713aSLionel Sambuc    long : 0;
15f4a2713aSLionel Sambuc    char bar;
16f4a2713aSLionel Sambuc } ATTR t1;
17*0a6a1f1dSLionel Sambuc int s1 = sizeof(t1);
18*0a6a1f1dSLionel Sambuc // CHECK: @s1 = global i32 2
19*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s1 = global i32 2
20f4a2713aSLionel Sambuc 
21f4a2713aSLionel Sambuc struct
22f4a2713aSLionel Sambuc {
23f4a2713aSLionel Sambuc    char foo;
24f4a2713aSLionel Sambuc    long : 0;
25f4a2713aSLionel Sambuc    char : 0;
26f4a2713aSLionel Sambuc    int : 0;
27f4a2713aSLionel Sambuc    char bar;
28f4a2713aSLionel Sambuc } ATTR t2;
29*0a6a1f1dSLionel Sambuc int s2 = sizeof(t2);
30*0a6a1f1dSLionel Sambuc // CHECK: @s2 = global i32 2
31*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s2 = global i32 2
32f4a2713aSLionel Sambuc 
33f4a2713aSLionel Sambuc struct
34f4a2713aSLionel Sambuc {
35f4a2713aSLionel Sambuc    char foo;
36f4a2713aSLionel Sambuc    long : 0;
37f4a2713aSLionel Sambuc    char : 0;
38f4a2713aSLionel Sambuc    int : 0;
39f4a2713aSLionel Sambuc    char bar;
40f4a2713aSLionel Sambuc    long : 0;
41f4a2713aSLionel Sambuc    char : 0;
42f4a2713aSLionel Sambuc } ATTR t3;
43*0a6a1f1dSLionel Sambuc int s3 = sizeof(t3);
44*0a6a1f1dSLionel Sambuc // CHECK: @s3 = global i32 2
45*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s3 = global i32 2
46f4a2713aSLionel Sambuc 
47f4a2713aSLionel Sambuc struct
48f4a2713aSLionel Sambuc {
49f4a2713aSLionel Sambuc    long : 0;
50f4a2713aSLionel Sambuc    char bar;
51f4a2713aSLionel Sambuc } ATTR t4;
52*0a6a1f1dSLionel Sambuc int s4 = sizeof(t4);
53*0a6a1f1dSLionel Sambuc // CHECK: @s4 = global i32 1
54*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s4 = global i32 1
55f4a2713aSLionel Sambuc 
56f4a2713aSLionel Sambuc struct
57f4a2713aSLionel Sambuc {
58f4a2713aSLionel Sambuc    long : 0;
59f4a2713aSLionel Sambuc    long : 0;
60f4a2713aSLionel Sambuc    char : 0;
61f4a2713aSLionel Sambuc    char bar;
62f4a2713aSLionel Sambuc } ATTR t5;
63*0a6a1f1dSLionel Sambuc int s5 = sizeof(t5);
64*0a6a1f1dSLionel Sambuc // CHECK: @s5 = global i32 1
65*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s5 = global i32 1
66f4a2713aSLionel Sambuc 
67f4a2713aSLionel Sambuc struct
68f4a2713aSLionel Sambuc {
69f4a2713aSLionel Sambuc    long : 0;
70f4a2713aSLionel Sambuc    long : 0;
71f4a2713aSLionel Sambuc    char : 0;
72f4a2713aSLionel Sambuc    char bar;
73f4a2713aSLionel Sambuc } ATTR t6;
74*0a6a1f1dSLionel Sambuc int s6 = sizeof(t6);
75*0a6a1f1dSLionel Sambuc // CHECK: @s6 = global i32 1
76*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s6 = global i32 1
77f4a2713aSLionel Sambuc 
78f4a2713aSLionel Sambuc struct
79f4a2713aSLionel Sambuc {
80f4a2713aSLionel Sambuc    char foo;
81f4a2713aSLionel Sambuc    long : 0;
82f4a2713aSLionel Sambuc    int : 0;
83f4a2713aSLionel Sambuc    char bar;
84f4a2713aSLionel Sambuc    char bar1;
85f4a2713aSLionel Sambuc    long : 0;
86f4a2713aSLionel Sambuc    char bar2;
87f4a2713aSLionel Sambuc    char bar3;
88f4a2713aSLionel Sambuc    char : 0;
89f4a2713aSLionel Sambuc    char bar4;
90f4a2713aSLionel Sambuc    char bar5;
91f4a2713aSLionel Sambuc    char : 0;
92f4a2713aSLionel Sambuc    char bar6;
93f4a2713aSLionel Sambuc    char bar7;
94f4a2713aSLionel Sambuc } ATTR t7;
95*0a6a1f1dSLionel Sambuc int s7 = sizeof(t7);
96*0a6a1f1dSLionel Sambuc // CHECK: @s7 = global i32 9
97*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s7 = global i32 9
98f4a2713aSLionel Sambuc 
99f4a2713aSLionel Sambuc struct
100f4a2713aSLionel Sambuc {
101f4a2713aSLionel Sambuc    long : 0;
102f4a2713aSLionel Sambuc    long : 0;
103f4a2713aSLionel Sambuc    char : 0;
104f4a2713aSLionel Sambuc } ATTR t8;
105*0a6a1f1dSLionel Sambuc int s8 = sizeof(t8);
106*0a6a1f1dSLionel Sambuc // CHECK: @s8 = global i32 0
107*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s8 = global i32 0
108f4a2713aSLionel Sambuc 
109f4a2713aSLionel Sambuc struct
110f4a2713aSLionel Sambuc {
111f4a2713aSLionel Sambuc    char foo;
112f4a2713aSLionel Sambuc    long : 0;
113f4a2713aSLionel Sambuc    int : 0;
114f4a2713aSLionel Sambuc    char bar;
115f4a2713aSLionel Sambuc    char bar1;
116f4a2713aSLionel Sambuc    long : 0;
117f4a2713aSLionel Sambuc    char bar2;
118f4a2713aSLionel Sambuc    char bar3;
119f4a2713aSLionel Sambuc    char : 0;
120f4a2713aSLionel Sambuc    char bar4;
121f4a2713aSLionel Sambuc    char bar5;
122f4a2713aSLionel Sambuc    char : 0;
123f4a2713aSLionel Sambuc    char bar6;
124f4a2713aSLionel Sambuc    char bar7;
125f4a2713aSLionel Sambuc    int  i1;
126f4a2713aSLionel Sambuc    char : 0;
127f4a2713aSLionel Sambuc    long : 0;
128f4a2713aSLionel Sambuc    char :4;
129f4a2713aSLionel Sambuc    char bar8;
130f4a2713aSLionel Sambuc    char : 0;
131f4a2713aSLionel Sambuc    char bar9;
132f4a2713aSLionel Sambuc    char bar10;
133f4a2713aSLionel Sambuc    int  i2;
134f4a2713aSLionel Sambuc    char : 0;
135f4a2713aSLionel Sambuc    long : 0;
136f4a2713aSLionel Sambuc    char :4;
137f4a2713aSLionel Sambuc } ATTR t9;
138*0a6a1f1dSLionel Sambuc int s9 = sizeof(t9);
139*0a6a1f1dSLionel Sambuc // CHECK: @s9 = global i32 28
140*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s9 = global i32 28
141f4a2713aSLionel Sambuc 
142f4a2713aSLionel Sambuc struct
143f4a2713aSLionel Sambuc {
144f4a2713aSLionel Sambuc    char foo: 8;
145f4a2713aSLionel Sambuc    long : 0;
146f4a2713aSLionel Sambuc    char bar;
147f4a2713aSLionel Sambuc } ATTR t10;
148*0a6a1f1dSLionel Sambuc int s10 = sizeof(t10);
149*0a6a1f1dSLionel Sambuc // CHECK: @s10 = global i32 16
150*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s10 = global i32 8
151f4a2713aSLionel Sambuc 
152*0a6a1f1dSLionel Sambuc // rdar://16041826 - ensure that ms_structs work correctly on a
153*0a6a1f1dSLionel Sambuc // !useBitFieldTypeAlignment() target
154*0a6a1f1dSLionel Sambuc struct {
155*0a6a1f1dSLionel Sambuc   unsigned int a : 31;
156*0a6a1f1dSLionel Sambuc   unsigned int b : 2;
157*0a6a1f1dSLionel Sambuc   unsigned int c;
158*0a6a1f1dSLionel Sambuc } ATTR t11;
159*0a6a1f1dSLionel Sambuc int s11 = sizeof(t11);
160*0a6a1f1dSLionel Sambuc // CHECK: @s11 = global i32 12
161*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s11 = global i32 12
162f4a2713aSLionel Sambuc 
163*0a6a1f1dSLionel Sambuc struct {
164*0a6a1f1dSLionel Sambuc   unsigned char a : 3;
165*0a6a1f1dSLionel Sambuc   unsigned char b : 4;
166*0a6a1f1dSLionel Sambuc   unsigned short c : 6;
167*0a6a1f1dSLionel Sambuc } ATTR t12;
168*0a6a1f1dSLionel Sambuc int s12 = sizeof(t12);
169*0a6a1f1dSLionel Sambuc // CHECK: @s12 = global i32 4
170*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s12 = global i32 4
171f4a2713aSLionel Sambuc 
172*0a6a1f1dSLionel Sambuc struct {
173*0a6a1f1dSLionel Sambuc   unsigned char a : 3;
174*0a6a1f1dSLionel Sambuc   unsigned char b : 4;
175*0a6a1f1dSLionel Sambuc   __attribute__((packed)) unsigned short c : 6;
176*0a6a1f1dSLionel Sambuc } ATTR t13;
177*0a6a1f1dSLionel Sambuc int s13 = sizeof(t13);
178*0a6a1f1dSLionel Sambuc // CHECK: @s13 = global i32 4
179*0a6a1f1dSLionel Sambuc // CHECK-ARM: @s13 = global i32 4
180