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| // RUN: %clang_cc1 %s -triple=x86_64-pc-linux -emit-llvm -o - | FileCheck --check-prefix=X86 %s
// RUN: %clang_cc1 %s -triple=wasm32 -emit-llvm -o - | FileCheck --check-prefix=WASM %s
// RUN: %clang_cc1 %s -triple=armv7-apple-darwin9 -emit-llvm -o - | FileCheck --check-prefix=ARM %s
// Test that destructors are not passed directly to __cxa_atexit when their
// signatures do not match the type of its first argument.
// e.g. ARM and WebAssembly have destructors that return this instead of void.
class Foo {
public:
~Foo() {
}
};
Foo global;
// X86 destructors have void return, and are registered directly with __cxa_atexit.
// X86: define internal void @__cxx_global_var_init()
// 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)
// ARM destructors return this, but can be registered directly with __cxa_atexit
// because the calling conventions tolerate the mismatch.
// ARM: define internal void @__cxx_global_var_init()
// 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)
// Wasm destructors return this, and use a wrapper function, which is registered
// with __cxa_atexit.
// WASM: define internal void @__cxx_global_var_init()
// WASM: call i32 @__cxa_atexit(void (i8*)* @__cxx_global_array_dtor, i8* null, i8* @__dso_handle)
// WASM: define internal void @__cxx_global_array_dtor(i8* %0)
// WASM: %call = call %class.Foo* @_ZN3FooD1Ev(%class.Foo* @global)
|