1 | // RUN: %clang_cc1 -triple x86_64-unknown-freebsd10.0 -emit-llvm < %s | FileCheck -check-prefix=FREEBSD %s |
2 | // RUN: %clang_cc1 -triple x86_64-pc-win32 -emit-llvm < %s | FileCheck -check-prefix=WIN64 %s |
3 | |
4 | struct foo { |
5 | int x; |
6 | float y; |
7 | char z; |
8 | }; |
9 | // FREEBSD: %[[STRUCT_FOO:.*]] = type { i32, float, i8 } |
10 | // WIN64: %[[STRUCT_FOO:.*]] = type { i32, float, i8 } |
11 | |
12 | void __attribute__((ms_abi)) f1(void); |
13 | void __attribute__((sysv_abi)) f2(void); |
14 | void f3(void) { |
15 | // FREEBSD-LABEL: define void @f3() |
16 | // WIN64-LABEL: define dso_local void @f3() |
17 | f1(); |
18 | // FREEBSD: call win64cc void @f1() |
19 | // WIN64: call void @f1() |
20 | f2(); |
21 | // FREEBSD: call void @f2() |
22 | // WIN64: call x86_64_sysvcc void @f2() |
23 | } |
24 | // FREEBSD: declare win64cc void @f1() |
25 | // FREEBSD: declare void @f2() |
26 | // WIN64: declare dso_local void @f1() |
27 | // WIN64: declare dso_local x86_64_sysvcc void @f2() |
28 | |
29 | // Win64 ABI varargs |
30 | void __attribute__((ms_abi)) f4(int a, ...) { |
31 | // FREEBSD-LABEL: define win64cc void @f4 |
32 | // WIN64-LABEL: define dso_local void @f4 |
33 | __builtin_ms_va_list ap; |
34 | __builtin_ms_va_start(ap, a); |
35 | // FREEBSD: %[[AP:.*]] = alloca i8* |
36 | // FREEBSD: call void @llvm.va_start |
37 | // WIN64: %[[AP:.*]] = alloca i8* |
38 | // WIN64: call void @llvm.va_start |
39 | int b = __builtin_va_arg(ap, int); |
40 | // FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] |
41 | // FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 |
42 | // FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] |
43 | // FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32* |
44 | // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] |
45 | // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 |
46 | // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] |
47 | // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* |
48 | // FIXME: These are different now. We probably need __builtin_ms_va_arg. |
49 | double _Complex c = __builtin_va_arg(ap, double _Complex); |
50 | // FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] |
51 | // FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 |
52 | // FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] |
53 | // FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* |
54 | // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] |
55 | // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8 |
56 | // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] |
57 | // WIN64-NEXT: %[[CUR2:.*]] = bitcast i8* %[[AP_CUR2]] to { double, double }** |
58 | // WIN64-NEXT: load { double, double }*, { double, double }** %[[CUR2]] |
59 | struct foo d = __builtin_va_arg(ap, struct foo); |
60 | // FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] |
61 | // FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 |
62 | // FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] |
63 | // FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* |
64 | // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] |
65 | // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8 |
66 | // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] |
67 | // WIN64-NEXT: %[[CUR3:.*]] = bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* |
68 | // WIN64-NEXT: load %[[STRUCT_FOO]]*, %[[STRUCT_FOO]]** %[[CUR3]] |
69 | __builtin_ms_va_list ap2; |
70 | __builtin_ms_va_copy(ap2, ap); |
71 | // FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] |
72 | // FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] |
73 | // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] |
74 | // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] |
75 | __builtin_ms_va_end(ap); |
76 | // FREEBSD: call void @llvm.va_end |
77 | // WIN64: call void @llvm.va_end |
78 | } |
79 | |
80 | // Let's verify that normal va_lists work right on Win64, too. |
81 | void f5(int a, ...) { |
82 | // WIN64-LABEL: define dso_local void @f5 |
83 | __builtin_va_list ap; |
84 | __builtin_va_start(ap, a); |
85 | // WIN64: %[[AP:.*]] = alloca i8* |
86 | // WIN64: call void @llvm.va_start |
87 | int b = __builtin_va_arg(ap, int); |
88 | // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] |
89 | // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 |
90 | // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] |
91 | // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* |
92 | double _Complex c = __builtin_va_arg(ap, double _Complex); |
93 | // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] |
94 | // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8 |
95 | // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] |
96 | // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* |
97 | struct foo d = __builtin_va_arg(ap, struct foo); |
98 | // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] |
99 | // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8 |
100 | // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] |
101 | // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* |
102 | __builtin_va_list ap2; |
103 | __builtin_va_copy(ap2, ap); |
104 | // WIN64: call void @llvm.va_copy |
105 | __builtin_va_end(ap); |
106 | // WIN64: call void @llvm.va_end |
107 | } |
108 | |
109 | // Verify that using a Win64 va_list from a System V function works. |
110 | void __attribute__((sysv_abi)) f6(__builtin_ms_va_list ap) { |
111 | // FREEBSD-LABEL: define void @f6 |
112 | // FREEBSD: store i8* %ap, i8** %[[AP:.*]] |
113 | // WIN64-LABEL: define dso_local x86_64_sysvcc void @f6 |
114 | // WIN64: store i8* %ap, i8** %[[AP:.*]] |
115 | int b = __builtin_va_arg(ap, int); |
116 | // FREEBSD: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] |
117 | // FREEBSD-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 |
118 | // FREEBSD-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] |
119 | // FREEBSD-NEXT: bitcast i8* %[[AP_CUR]] to i32* |
120 | // WIN64: %[[AP_CUR:.*]] = load i8*, i8** %[[AP]] |
121 | // WIN64-NEXT: %[[AP_NEXT:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR]], i64 8 |
122 | // WIN64-NEXT: store i8* %[[AP_NEXT]], i8** %[[AP]] |
123 | // WIN64-NEXT: bitcast i8* %[[AP_CUR]] to i32* |
124 | double _Complex c = __builtin_va_arg(ap, double _Complex); |
125 | // FREEBSD: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] |
126 | // FREEBSD-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 16 |
127 | // FREEBSD-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] |
128 | // FREEBSD-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* |
129 | // WIN64: %[[AP_CUR2:.*]] = load i8*, i8** %[[AP]] |
130 | // WIN64-NEXT: %[[AP_NEXT2:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR2]], i64 8 |
131 | // WIN64-NEXT: store i8* %[[AP_NEXT2]], i8** %[[AP]] |
132 | // WIN64-NEXT: bitcast i8* %[[AP_CUR2]] to { double, double }* |
133 | struct foo d = __builtin_va_arg(ap, struct foo); |
134 | // FREEBSD: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] |
135 | // FREEBSD-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 16 |
136 | // FREEBSD-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] |
137 | // FREEBSD-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* |
138 | // WIN64: %[[AP_CUR3:.*]] = load i8*, i8** %[[AP]] |
139 | // WIN64-NEXT: %[[AP_NEXT3:.*]] = getelementptr inbounds i8, i8* %[[AP_CUR3]], i64 8 |
140 | // WIN64-NEXT: store i8* %[[AP_NEXT3]], i8** %[[AP]] |
141 | // WIN64-NEXT: bitcast i8* %[[AP_CUR3]] to %[[STRUCT_FOO]]* |
142 | __builtin_ms_va_list ap2; |
143 | __builtin_ms_va_copy(ap2, ap); |
144 | // FREEBSD: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] |
145 | // FREEBSD-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] |
146 | // WIN64: %[[AP_VAL:.*]] = load i8*, i8** %[[AP]] |
147 | // WIN64-NEXT: store i8* %[[AP_VAL]], i8** %[[AP2:.*]] |
148 | } |
149 | |
150 | // This test checks if structs are passed according to Win64 calling convention |
151 | // when it's enforced by __attribute((ms_abi)). |
152 | struct i128 { |
153 | unsigned long long a; |
154 | unsigned long long b; |
155 | }; |
156 | |
157 | __attribute__((ms_abi)) struct i128 f7(struct i128 a) { |
158 | // WIN64: define dso_local void @f7(%struct.i128* noalias sret %agg.result, %struct.i128* %a) |
159 | // FREEBSD: define win64cc void @f7(%struct.i128* noalias sret %agg.result, %struct.i128* %a) |
160 | return a; |
161 | } |
162 | |