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