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- // Verifies lifetime of __gro local variable
- // Verify that coroutine promise and allocated memory are freed up on exception.
- // RUN: %clang_cc1 -std=c++1z -fcoroutines-ts -triple=x86_64-unknown-linux-gnu -emit-llvm -o - %s -disable-llvm-passes | FileCheck %s
- namespace std::experimental {
- template <typename... T> struct coroutine_traits;
- template <class Promise = void> struct coroutine_handle {
- coroutine_handle() = default;
- static coroutine_handle from_address(void *) noexcept;
- };
- template <> struct coroutine_handle<void> {
- static coroutine_handle from_address(void *) noexcept;
- coroutine_handle() = default;
- template <class PromiseType>
- coroutine_handle(coroutine_handle<PromiseType>) noexcept;
- };
- }
- struct suspend_always {
- bool await_ready() noexcept;
- void await_suspend(std::experimental::coroutine_handle<>) noexcept;
- void await_resume() noexcept;
- };
- struct GroType {
- ~GroType();
- operator int() noexcept;
- };
- template <> struct std::experimental::coroutine_traits<int> {
- struct promise_type {
- GroType get_return_object() noexcept;
- suspend_always initial_suspend() noexcept;
- suspend_always final_suspend() noexcept;
- void return_void() noexcept;
- promise_type();
- ~promise_type();
- void unhandled_exception() noexcept;
- };
- };
- struct Cleanup { ~Cleanup(); };
- void doSomething() noexcept;
- // CHECK: define i32 @_Z1fv(
- int f() {
- // CHECK: %[[RetVal:.+]] = alloca i32
- // CHECK: %[[GroActive:.+]] = alloca i1
- // CHECK: %[[Size:.+]] = call i64 @llvm.coro.size.i64()
- // CHECK: call i8* @_Znwm(i64 %[[Size]])
- // CHECK: store i1 false, i1* %[[GroActive]]
- // CHECK: call void @_ZNSt12experimental16coroutine_traitsIJiEE12promise_typeC1Ev(
- // CHECK: call void @_ZNSt12experimental16coroutine_traitsIJiEE12promise_type17get_return_objectEv(
- // CHECK: store i1 true, i1* %[[GroActive]]
- Cleanup cleanup;
- doSomething();
- co_return;
- // CHECK: call void @_Z11doSomethingv(
- // CHECK: call void @_ZNSt12experimental16coroutine_traitsIJiEE12promise_type11return_voidEv(
- // CHECK: call void @_ZN7CleanupD1Ev(
- // Destroy promise and free the memory.
- // CHECK: call void @_ZNSt12experimental16coroutine_traitsIJiEE12promise_typeD1Ev(
- // CHECK: %[[Mem:.+]] = call i8* @llvm.coro.free(
- // CHECK: call void @_ZdlPv(i8* %[[Mem]])
- // Initialize retval from Gro and destroy Gro
- // CHECK: %[[Conv:.+]] = call i32 @_ZN7GroTypecviEv(
- // CHECK: store i32 %[[Conv]], i32* %[[RetVal]]
- // CHECK: %[[IsActive:.+]] = load i1, i1* %[[GroActive]]
- // CHECK: br i1 %[[IsActive]], label %[[CleanupGro:.+]], label %[[Done:.+]]
- // CHECK: [[CleanupGro]]:
- // CHECK: call void @_ZN7GroTypeD1Ev(
- // CHECK: br label %[[Done]]
- // CHECK: [[Done]]:
- // CHECK: %[[LoadRet:.+]] = load i32, i32* %[[RetVal]]
- // CHECK: ret i32 %[[LoadRet]]
- }
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