1// RUN: %clang_cc1 -triple wasm32-unknown-unknown -o - -emit-llvm %s | FileCheck %s
2
3#include <stdarg.h>
4
5int 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
34long 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
67struct S {
68    int x;
69    int y;
70    int z;
71};
72
73struct 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