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| // RUN: %clang_cc1 -Wno-non-pod-varargs -emit-llvm %s -o - -triple=i686-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck %s
|
| #include <stdarg.h>
|
| struct A {
| A(int a) : a(a) {}
| A(const A &o) : a(o.a) {}
| ~A() {}
| int a;
| };
|
| int foo(A a, ...) {
| va_list ap;
| va_start(ap, a);
| int sum = 0;
| for (int i = 0; i < a.a; ++i)
| sum += va_arg(ap, int);
| va_end(ap);
| return sum;
| }
|
| // CHECK-LABEL: define i32 @"\01?foo@@YAHUA@@ZZ"(<{ %struct.A }>* inalloca, ...)
|
| int main() {
| return foo(A(3), 1, 2, 3);
| }
| // CHECK-LABEL: define i32 @main()
| // CHECK: %[[argmem:[^ ]*]] = alloca inalloca <{ %struct.A, i32, i32, i32 }>
| // CHECK: call i32 {{.*bitcast.*}}@"\01?foo@@YAHUA@@ZZ"{{.*}}(<{ %struct.A, i32, i32, i32 }>* inalloca %[[argmem]])
|
| void varargs_zero(...);
| void varargs_one(int, ...);
| void varargs_two(int, int, ...);
| void varargs_three(int, int, int, ...);
| void call_var_args() {
| A x(3);
| varargs_zero(x);
| varargs_one(1, x);
| varargs_two(1, 2, x);
| varargs_three(1, 2, 3, x);
| }
|
| // CHECK-LABEL: define void @"\01?call_var_args@@YAXXZ"()
| // CHECK: call void {{.*bitcast.*varargs_zero.*}}(<{ %struct.A }>* inalloca %{{.*}})
| // CHECK: call void {{.*bitcast.*varargs_one.*}}(<{ i32, %struct.A }>* inalloca %{{.*}})
| // CHECK: call void {{.*bitcast.*varargs_two.*}}(<{ i32, i32, %struct.A }>* inalloca %{{.*}})
| // CHECK: call void {{.*bitcast.*varargs_three.*}}(<{ i32, i32, i32, %struct.A }>* inalloca %{{.*}})
|
| // CHECK-LABEL: declare void @"\01?varargs_zero@@YAXZZ"(...)
| // CHECK-LABEL: declare void @"\01?varargs_one@@YAXHZZ"(i32, ...)
| // CHECK-LABEL: declare void @"\01?varargs_two@@YAXHHZZ"(i32, i32, ...)
| // CHECK-LABEL: declare void @"\01?varargs_three@@YAXHHHZZ"(i32, i32, i32, ...)
|
|
