1// RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -o - | FileCheck --check-prefix=X86 %s
2// RUN: %clang_cc1 %s -triple=wasm32 -emit-llvm -o - | FileCheck --check-prefix=WASM %s
3// RUN: %clang_cc1 %s -triple=armv7-apple-darwin9 -emit-llvm -o - | FileCheck --check-prefix=ARM %s
4
5// Test that destructors are not passed directly to __cxa_atexit when their
6// signatures do not match the type of its first argument.
7// e.g. ARM and WebAssembly have destructors that return this instead of void.
8
9
10class Foo {
11 public:
12  ~Foo() {
13  }
14};
15
16Foo global;
17
18// X86 destructors have void return, and are registered directly with __cxa_atexit.
19// X86: define internal void @__cxx_global_var_init()
20// X86:   call i32 @__cxa_atexit(void (i8*)* bitcast (void (%class.Foo*)* @_ZN3FooD1Ev to void (i8*)*), i8* getelementptr inbounds (%class.Foo, %class.Foo* @global, i32 0, i32 0), i8* @__dso_handle)
21
22// ARM destructors return this, but can be registered directly with __cxa_atexit
23// because the calling conventions tolerate the mismatch.
24// ARM: define internal void @__cxx_global_var_init()
25// ARM:   call i32 @__cxa_atexit(void (i8*)* bitcast (%class.Foo* (%class.Foo*)* @_ZN3FooD1Ev to void (i8*)*), i8* getelementptr inbounds (%class.Foo, %class.Foo* @global, i32 0, i32 0), i8* @__dso_handle)
26
27// Wasm destructors return this, and use a wrapper function, which is registered
28// with __cxa_atexit.
29// WASM: define internal void @__cxx_global_var_init()
30// WASM: call i32 @__cxa_atexit(void (i8*)* @__cxx_global_array_dtor, i8* null, i8* @__dso_handle)
31
32// WASM: define internal void @__cxx_global_array_dtor(i8*)
33// WASM: %call = call %class.Foo* @_ZN3FooD1Ev(%class.Foo* @global)
34