xref: /aosp_15_r20/external/clang/test/CodeGen/ms_struct-bitfield.c (revision 67e74705e28f6214e480b399dd47ea732279e315) 
1*67e74705SXin Li // RUN: %clang_cc1 -emit-llvm -o - -triple x86_64-apple-darwin9 %s | FileCheck %s
2*67e74705SXin Li // RUN: %clang_cc1 -emit-llvm -o - -triple thumbv7-apple-ios -target-abi apcs-gnu %s | FileCheck %s -check-prefix=CHECK-ARM
3*67e74705SXin Li 
4*67e74705SXin Li // rdar://8823265
5*67e74705SXin Li 
6*67e74705SXin Li // Note that we're declaring global variables with these types,
7*67e74705SXin Li // triggering both Sema and IRGen struct layout.
8*67e74705SXin Li 
9*67e74705SXin Li #define ATTR __attribute__((__ms_struct__))
10*67e74705SXin Li 
11*67e74705SXin Li struct
12*67e74705SXin Li {
13*67e74705SXin Li    char foo;
14*67e74705SXin Li    long : 0;
15*67e74705SXin Li    char bar;
16*67e74705SXin Li } ATTR t1;
17*67e74705SXin Li int s1 = sizeof(t1);
18*67e74705SXin Li // CHECK: @s1 = global i32 2
19*67e74705SXin Li // CHECK-ARM: @s1 = global i32 2
20*67e74705SXin Li 
21*67e74705SXin Li struct
22*67e74705SXin Li {
23*67e74705SXin Li    char foo;
24*67e74705SXin Li    long : 0;
25*67e74705SXin Li    char : 0;
26*67e74705SXin Li    int : 0;
27*67e74705SXin Li    char bar;
28*67e74705SXin Li } ATTR t2;
29*67e74705SXin Li int s2 = sizeof(t2);
30*67e74705SXin Li // CHECK: @s2 = global i32 2
31*67e74705SXin Li // CHECK-ARM: @s2 = global i32 2
32*67e74705SXin Li 
33*67e74705SXin Li struct
34*67e74705SXin Li {
35*67e74705SXin Li    char foo;
36*67e74705SXin Li    long : 0;
37*67e74705SXin Li    char : 0;
38*67e74705SXin Li    int : 0;
39*67e74705SXin Li    char bar;
40*67e74705SXin Li    long : 0;
41*67e74705SXin Li    char : 0;
42*67e74705SXin Li } ATTR t3;
43*67e74705SXin Li int s3 = sizeof(t3);
44*67e74705SXin Li // CHECK: @s3 = global i32 2
45*67e74705SXin Li // CHECK-ARM: @s3 = global i32 2
46*67e74705SXin Li 
47*67e74705SXin Li struct
48*67e74705SXin Li {
49*67e74705SXin Li    long : 0;
50*67e74705SXin Li    char bar;
51*67e74705SXin Li } ATTR t4;
52*67e74705SXin Li int s4 = sizeof(t4);
53*67e74705SXin Li // CHECK: @s4 = global i32 1
54*67e74705SXin Li // CHECK-ARM: @s4 = global i32 1
55*67e74705SXin Li 
56*67e74705SXin Li struct
57*67e74705SXin Li {
58*67e74705SXin Li    long : 0;
59*67e74705SXin Li    long : 0;
60*67e74705SXin Li    char : 0;
61*67e74705SXin Li    char bar;
62*67e74705SXin Li } ATTR t5;
63*67e74705SXin Li int s5 = sizeof(t5);
64*67e74705SXin Li // CHECK: @s5 = global i32 1
65*67e74705SXin Li // CHECK-ARM: @s5 = global i32 1
66*67e74705SXin Li 
67*67e74705SXin Li struct
68*67e74705SXin Li {
69*67e74705SXin Li    long : 0;
70*67e74705SXin Li    long : 0;
71*67e74705SXin Li    char : 0;
72*67e74705SXin Li    char bar;
73*67e74705SXin Li } ATTR t6;
74*67e74705SXin Li int s6 = sizeof(t6);
75*67e74705SXin Li // CHECK: @s6 = global i32 1
76*67e74705SXin Li // CHECK-ARM: @s6 = global i32 1
77*67e74705SXin Li 
78*67e74705SXin Li struct
79*67e74705SXin Li {
80*67e74705SXin Li    char foo;
81*67e74705SXin Li    long : 0;
82*67e74705SXin Li    int : 0;
83*67e74705SXin Li    char bar;
84*67e74705SXin Li    char bar1;
85*67e74705SXin Li    long : 0;
86*67e74705SXin Li    char bar2;
87*67e74705SXin Li    char bar3;
88*67e74705SXin Li    char : 0;
89*67e74705SXin Li    char bar4;
90*67e74705SXin Li    char bar5;
91*67e74705SXin Li    char : 0;
92*67e74705SXin Li    char bar6;
93*67e74705SXin Li    char bar7;
94*67e74705SXin Li } ATTR t7;
95*67e74705SXin Li int s7 = sizeof(t7);
96*67e74705SXin Li // CHECK: @s7 = global i32 9
97*67e74705SXin Li // CHECK-ARM: @s7 = global i32 9
98*67e74705SXin Li 
99*67e74705SXin Li struct
100*67e74705SXin Li {
101*67e74705SXin Li    long : 0;
102*67e74705SXin Li    long : 0;
103*67e74705SXin Li    char : 0;
104*67e74705SXin Li } ATTR t8;
105*67e74705SXin Li int s8 = sizeof(t8);
106*67e74705SXin Li // CHECK: @s8 = global i32 0
107*67e74705SXin Li // CHECK-ARM: @s8 = global i32 0
108*67e74705SXin Li 
109*67e74705SXin Li struct
110*67e74705SXin Li {
111*67e74705SXin Li    char foo;
112*67e74705SXin Li    long : 0;
113*67e74705SXin Li    int : 0;
114*67e74705SXin Li    char bar;
115*67e74705SXin Li    char bar1;
116*67e74705SXin Li    long : 0;
117*67e74705SXin Li    char bar2;
118*67e74705SXin Li    char bar3;
119*67e74705SXin Li    char : 0;
120*67e74705SXin Li    char bar4;
121*67e74705SXin Li    char bar5;
122*67e74705SXin Li    char : 0;
123*67e74705SXin Li    char bar6;
124*67e74705SXin Li    char bar7;
125*67e74705SXin Li    int  i1;
126*67e74705SXin Li    char : 0;
127*67e74705SXin Li    long : 0;
128*67e74705SXin Li    char :4;
129*67e74705SXin Li    char bar8;
130*67e74705SXin Li    char : 0;
131*67e74705SXin Li    char bar9;
132*67e74705SXin Li    char bar10;
133*67e74705SXin Li    int  i2;
134*67e74705SXin Li    char : 0;
135*67e74705SXin Li    long : 0;
136*67e74705SXin Li    char :4;
137*67e74705SXin Li } ATTR t9;
138*67e74705SXin Li int s9 = sizeof(t9);
139*67e74705SXin Li // CHECK: @s9 = global i32 28
140*67e74705SXin Li // CHECK-ARM: @s9 = global i32 28
141*67e74705SXin Li 
142*67e74705SXin Li struct
143*67e74705SXin Li {
144*67e74705SXin Li    char foo: 8;
145*67e74705SXin Li    long : 0;
146*67e74705SXin Li    char bar;
147*67e74705SXin Li } ATTR t10;
148*67e74705SXin Li int s10 = sizeof(t10);
149*67e74705SXin Li // CHECK: @s10 = global i32 16
150*67e74705SXin Li // CHECK-ARM: @s10 = global i32 8
151*67e74705SXin Li 
152*67e74705SXin Li // rdar://16041826 - ensure that ms_structs work correctly on a
153*67e74705SXin Li // !useBitFieldTypeAlignment() target
154*67e74705SXin Li struct {
155*67e74705SXin Li   unsigned int a : 31;
156*67e74705SXin Li   unsigned int b : 2;
157*67e74705SXin Li   unsigned int c;
158*67e74705SXin Li } ATTR t11;
159*67e74705SXin Li int s11 = sizeof(t11);
160*67e74705SXin Li // CHECK: @s11 = global i32 12
161*67e74705SXin Li // CHECK-ARM: @s11 = global i32 12
162*67e74705SXin Li 
163*67e74705SXin Li struct {
164*67e74705SXin Li   unsigned char a : 3;
165*67e74705SXin Li   unsigned char b : 4;
166*67e74705SXin Li   unsigned short c : 6;
167*67e74705SXin Li } ATTR t12;
168*67e74705SXin Li int s12 = sizeof(t12);
169*67e74705SXin Li // CHECK: @s12 = global i32 4
170*67e74705SXin Li // CHECK-ARM: @s12 = global i32 4
171*67e74705SXin Li 
172*67e74705SXin Li struct {
173*67e74705SXin Li   unsigned char a : 3;
174*67e74705SXin Li   unsigned char b : 4;
175*67e74705SXin Li   __attribute__((packed)) unsigned short c : 6;
176*67e74705SXin Li } ATTR t13;
177*67e74705SXin Li int s13 = sizeof(t13);
178*67e74705SXin Li // CHECK: @s13 = global i32 4
179*67e74705SXin Li // CHECK-ARM: @s13 = global i32 4
180