1 // RUN: %clang_cc1 -triple wasm32-unknown-unknown -o - -emit-llvm %s | FileCheck %s
2
3 #include <stdarg.h>
4
test_i32(char * fmt,...)5 int test_i32(char *fmt, ...) {
6 va_list va;
7
8 va_start(va, fmt);
9 int v = va_arg(va, int);
10 va_end(va);
11
12 return v;
13 }
14
15 // CHECK-LABEL: define i32 @test_i32(i8*{{.*}} %fmt, ...) {{.*}} {
16 // CHECK: [[FMT_ADDR:%[^,=]+]] = alloca i8*, align 4
17 // CHECK: [[VA:%[^,=]+]] = alloca i8*, align 4
18 // CHECK: [[V:%[^,=]+]] = alloca i32, align 4
19 // CHECK: store i8* %fmt, i8** [[FMT_ADDR]], align 4
20 // CHECK: [[VA1:%[^,=]+]] = bitcast i8** [[VA]] to i8*
21 // CHECK: call void @llvm.va_start(i8* [[VA1]])
22 // CHECK: [[ARGP_CUR:%[^,=]+]] = load i8*, i8** [[VA]], align 4
23 // CHECK: [[ARGP_NEXT:%[^,=]+]] = getelementptr inbounds i8, i8* [[ARGP_CUR]], i32 4
24 // CHECK: store i8* [[ARGP_NEXT]], i8** [[VA]], align 4
25 // CHECK: [[R3:%[^,=]+]] = bitcast i8* [[ARGP_CUR]] to i32*
26 // CHECK: [[R4:%[^,=]+]] = load i32, i32* [[R3]], align 4
27 // CHECK: store i32 [[R4]], i32* [[V]], align 4
28 // CHECK: [[VA2:%[^,=]+]] = bitcast i8** [[VA]] to i8*
29 // CHECK: call void @llvm.va_end(i8* [[VA2]])
30 // CHECK: [[R5:%[^,=]+]] = load i32, i32* [[V]], align 4
31 // CHECK: ret i32 [[R5]]
32 // CHECK: }
33
test_i64(char * fmt,...)34 long long test_i64(char *fmt, ...) {
35 va_list va;
36
37 va_start(va, fmt);
38 long long v = va_arg(va, long long);
39 va_end(va);
40
41 return v;
42 }
43
44 // CHECK-LABEL: define i64 @test_i64(i8*{{.*}} %fmt, ...) {{.*}} {
45 // CHECK: [[FMT_ADDR:%[^,=]+]] = alloca i8*, align 4
46 // CHECK: [[VA:%[^,=]+]] = alloca i8*, align 4
47 // CHECK: [[V:%[^,=]+]] = alloca i64, align 8
48 // CHECK: store i8* %fmt, i8** [[FMT_ADDR]], align 4
49 // CHECK: [[VA1:%[^,=]+]] = bitcast i8** [[VA]] to i8*
50 // CHECK: call void @llvm.va_start(i8* [[VA1]])
51 // CHECK: [[ARGP_CUR:%[^,=]+]] = load i8*, i8** [[VA]], align 4
52 // CHECK: [[R0:%[^,=]+]] = ptrtoint i8* [[ARGP_CUR]] to i32
53 // CHECK: [[R1:%[^,=]+]] = add i32 [[R0]], 7
54 // CHECK: [[R2:%[^,=]+]] = and i32 [[R1]], -8
55 // CHECK: [[ARGP_CUR_ALIGNED:%[^,=]+]] = inttoptr i32 [[R2]] to i8*
56 // CHECK: [[ARGP_NEXT:%[^,=]+]] = getelementptr inbounds i8, i8* [[ARGP_CUR_ALIGNED]], i32 8
57 // CHECK: store i8* [[ARGP_NEXT]], i8** [[VA]], align 4
58 // CHECK: [[R3:%[^,=]+]] = bitcast i8* [[ARGP_CUR_ALIGNED]] to i64*
59 // CHECK: [[R4:%[^,=]+]] = load i64, i64* [[R3]], align 8
60 // CHECK: store i64 [[R4]], i64* [[V]], align 8
61 // CHECK: [[VA2:%[^,=]+]] = bitcast i8** [[VA]] to i8*
62 // CHECK: call void @llvm.va_end(i8* [[VA2]])
63 // CHECK: [[R5:%[^,=]+]] = load i64, i64* [[V]], align 8
64 // CHECK: ret i64 [[R5]]
65 // CHECK: }
66
67 struct S {
68 int x;
69 int y;
70 int z;
71 };
72
test_struct(char * fmt,...)73 struct S test_struct(char *fmt, ...) {
74 va_list va;
75
76 va_start(va, fmt);
77 struct S v = va_arg(va, struct S);
78 va_end(va);
79
80 return v;
81 }
82
83 // CHECK: define void @test_struct([[STRUCT_S:%[^,=]+]]*{{.*}} noalias sret %agg.result, i8*{{.*}} %fmt, ...) {{.*}} {
84 // CHECK: [[FMT_ADDR:%[^,=]+]] = alloca i8*, align 4
85 // CHECK: [[VA:%[^,=]+]] = alloca i8*, align 4
86 // CHECK: [[V:%[^,=]+]] = alloca [[STRUCT_S]], align 4
87 // CHECK: store i8* %fmt, i8** [[FMT_ADDR]], align 4
88 // CHECK: [[VA1:%[^,=]+]] = bitcast i8** [[VA]] to i8*
89 // CHECK: call void @llvm.va_start(i8* [[VA1]])
90 // CHECK: [[ARGP_CUR:%[^,=]+]] = load i8*, i8** [[VA]], align 4
91 // CHECK: [[ARGP_NEXT:%[^,=]+]] = getelementptr inbounds i8, i8* [[ARGP_CUR]], i32 12
92 // CHECK: store i8* [[ARGP_NEXT]], i8** [[VA]], align 4
93 // CHECK: [[R3:%[^,=]+]] = bitcast i8* [[ARGP_CUR]] to [[STRUCT_S]]*
94 // CHECK: [[R4:%[^,=]+]] = bitcast [[STRUCT_S]]* [[V]] to i8*
95 // CHECK: [[R5:%[^,=]+]] = bitcast [[STRUCT_S]]* [[R3]] to i8*
96 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[R4]], i8* [[R5]], i32 12, i32 4, i1 false)
97 // CHECK: [[VA2:%[^,=]+]] = bitcast i8** [[VA]] to i8*
98 // CHECK: call void @llvm.va_end(i8* [[VA2]])
99 // CHECK: [[R6:%[^,=]+]] = bitcast [[STRUCT_S]]* %agg.result to i8*
100 // CHECK: [[R7:%[^,=]+]] = bitcast [[STRUCT_S]]* [[V]] to i8*
101 // CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[R6]], i8* [[R7]], i32 12, i32 4, i1 false)
102 // CHECK: ret void
103 // CHECK: }
104