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Reid Klecknerafba553e2014-07-08 02:24:27 +00001// RUN: %clang_cc1 -Wno-non-pod-varargs -emit-llvm %s -o - -triple=i686-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck %s
Reid Kleckner314ef7b2014-02-01 00:04:45 +00002
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
Reid Klecknerafba553e2014-07-08 02:24:27 +000022// CHECK-LABEL: define i32 @"\01?foo@@YAHUA@@ZZ"(<{ %struct.A }>* inalloca, ...)
23
Reid Kleckner314ef7b2014-02-01 00:04:45 +000024int main() {
25 return foo(A(3), 1, 2, 3);
26}
27// CHECK-LABEL: define i32 @main()
Reid Klecknerafba553e2014-07-08 02:24:27 +000028// 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, ...)