1// RUN: %clang_cc1 -Wno-non-pod-varargs -emit-llvm %s -o - -triple=i686-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck %s
2
3#include <stdarg.h>
4
5struct A {
6  A(int a) : a(a) {}
7  A(const A &o) : a(o.a) {}
8  ~A() {}
9  int a;
10};
11
12int foo(A a, ...) {
13  va_list ap;
14  va_start(ap, a);
15  int sum = 0;
16  for (int i = 0; i < a.a; ++i)
17    sum += va_arg(ap, int);
18  va_end(ap);
19  return sum;
20}
21
22// CHECK-LABEL: define i32 @"\01?foo@@YAHUA@@ZZ"(<{ %struct.A }>* inalloca, ...)
23
24int main() {
25  return foo(A(3), 1, 2, 3);
26}
27// CHECK-LABEL: define i32 @main()
28// CHECK: %[[argmem:[^ ]*]] = alloca inalloca <{ %struct.A, i32, i32, i32 }>
29// CHECK: call i32 {{.*bitcast.*}}@"\01?foo@@YAHUA@@ZZ"{{.*}}(<{ %struct.A, i32, i32, i32 }>* inalloca %[[argmem]])
30
31void varargs_zero(...);
32void varargs_one(int, ...);
33void varargs_two(int, int, ...);
34void varargs_three(int, int, int, ...);
35void call_var_args() {
36  A x(3);
37  varargs_zero(x);
38  varargs_one(1, x);
39  varargs_two(1, 2, x);
40  varargs_three(1, 2, 3, x);
41}
42
43// CHECK-LABEL: define void @"\01?call_var_args@@YAXXZ"()
44// CHECK: call void {{.*bitcast.*varargs_zero.*}}(<{ %struct.A }>* inalloca %{{.*}})
45// CHECK: call void {{.*bitcast.*varargs_one.*}}(<{ i32, %struct.A }>* inalloca %{{.*}})
46// CHECK: call void {{.*bitcast.*varargs_two.*}}(<{ i32, i32, %struct.A }>* inalloca %{{.*}})
47// CHECK: call void {{.*bitcast.*varargs_three.*}}(<{ i32, i32, i32, %struct.A }>* inalloca %{{.*}})
48
49// CHECK-LABEL: declare void @"\01?varargs_zero@@YAXZZ"(...)
50// CHECK-LABEL: declare void @"\01?varargs_one@@YAXHZZ"(i32, ...)
51// CHECK-LABEL: declare void @"\01?varargs_two@@YAXHHZZ"(i32, i32, ...)
52// CHECK-LABEL: declare void @"\01?varargs_three@@YAXHHHZZ"(i32, i32, i32, ...)
53