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// Tests that we can mark await-suspend as noinline correctly.
//
// RUN: %clang_cc1 -std=c++20 -triple x86_64-unknown-linux-gnu -emit-llvm -o - %s \
// RUN: -O1 -disable-llvm-passes | FileCheck %s
#include "Inputs/coroutine.h"
struct Task {
struct promise_type {
struct FinalAwaiter {
bool await_ready() const noexcept { return false; }
template <typename PromiseType>
std::coroutine_handle<> await_suspend(std::coroutine_handle<PromiseType> h) noexcept {
return h.promise().continuation;
}
void await_resume() noexcept {}
};
Task get_return_object() noexcept {
return std::coroutine_handle<promise_type>::from_promise(*this);
}
std::suspend_always initial_suspend() noexcept { return {}; }
FinalAwaiter final_suspend() noexcept { return {}; }
void unhandled_exception() noexcept {}
void return_void() noexcept {}
std::coroutine_handle<> continuation;
};
Task(std::coroutine_handle<promise_type> handle);
~Task();
private:
std::coroutine_handle<promise_type> handle;
};
struct StatefulAwaiter {
int value;
bool await_ready() const noexcept { return false; }
template <typename PromiseType>
void await_suspend(std::coroutine_handle<PromiseType> h) noexcept {}
void await_resume() noexcept {}
};
typedef std::suspend_always NoStateAwaiter;
using AnotherStatefulAwaiter = StatefulAwaiter;
template <class T>
struct TemplatedAwaiter {
T value;
bool await_ready() const noexcept { return false; }
template <typename PromiseType>
void await_suspend(std::coroutine_handle<PromiseType> h) noexcept {}
void await_resume() noexcept {}
};
class Awaitable {};
StatefulAwaiter operator co_await(Awaitable) {
return StatefulAwaiter{};
}
StatefulAwaiter GlobalAwaiter;
class Awaitable2 {};
StatefulAwaiter& operator co_await(Awaitable2) {
return GlobalAwaiter;
}
struct AlwaysInlineStatefulAwaiter {
void* value;
bool await_ready() const noexcept { return false; }
template <typename PromiseType>
__attribute__((always_inline))
void await_suspend(std::coroutine_handle<PromiseType> h) noexcept {}
void await_resume() noexcept {}
};
Task testing() {
co_await std::suspend_always{};
co_await StatefulAwaiter{};
co_await AnotherStatefulAwaiter{};
// Test lvalue case.
StatefulAwaiter awaiter;
co_await awaiter;
// The explicit call to await_suspend is not considered suspended.
awaiter.await_suspend(std::coroutine_handle<void>::from_address(nullptr));
co_await TemplatedAwaiter<int>{};
TemplatedAwaiter<int> TemplatedAwaiterInstace;
co_await TemplatedAwaiterInstace;
co_await Awaitable{};
co_await Awaitable2{};
co_await AlwaysInlineStatefulAwaiter{};
}
struct AwaitTransformTask {
struct promise_type {
struct FinalAwaiter {
bool await_ready() const noexcept { return false; }
template <typename PromiseType>
std::coroutine_handle<> await_suspend(std::coroutine_handle<PromiseType> h) noexcept {
return h.promise().continuation;
}
void await_resume() noexcept {}
};
AwaitTransformTask get_return_object() noexcept {
return std::coroutine_handle<promise_type>::from_promise(*this);
}
std::suspend_always initial_suspend() noexcept { return {}; }
FinalAwaiter final_suspend() noexcept { return {}; }
void unhandled_exception() noexcept {}
void return_void() noexcept {}
template <typename Awaitable>
auto await_transform(Awaitable &&awaitable) {
return awaitable;
}
std::coroutine_handle<> continuation;
};
AwaitTransformTask(std::coroutine_handle<promise_type> handle);
~AwaitTransformTask();
private:
std::coroutine_handle<promise_type> handle;
};
struct awaitableWithGetAwaiter {
bool await_ready() const noexcept { return false; }
template <typename PromiseType>
void await_suspend(std::coroutine_handle<PromiseType> h) noexcept {}
void await_resume() noexcept {}
};
AwaitTransformTask testingWithAwaitTransform() {
co_await awaitableWithGetAwaiter{};
}
// CHECK: define{{.*}}@_ZNSt14suspend_always13await_suspendESt16coroutine_handleIvE{{.*}}#[[NORMAL_ATTR:[0-9]+]]
// CHECK: define{{.*}}@_ZN15StatefulAwaiter13await_suspendIN4Task12promise_typeEEEvSt16coroutine_handleIT_E{{.*}}#[[NOINLINE_ATTR:[0-9]+]]
// CHECK: define{{.*}}@_ZN15StatefulAwaiter13await_suspendIvEEvSt16coroutine_handleIT_E{{.*}}#[[NORMAL_ATTR]]
// CHECK: define{{.*}}@_ZN16TemplatedAwaiterIiE13await_suspendIN4Task12promise_typeEEEvSt16coroutine_handleIT_E{{.*}}#[[NOINLINE_ATTR]]
// CHECK: define{{.*}}@_ZN27AlwaysInlineStatefulAwaiter13await_suspendIN4Task12promise_typeEEEvSt16coroutine_handleIT_E{{.*}}#[[ALWAYS_INLINE_ATTR:[0-9]+]]
// CHECK: define{{.*}}@_ZN4Task12promise_type12FinalAwaiter13await_suspendIS0_EESt16coroutine_handleIvES3_IT_E{{.*}}#[[NORMAL_ATTR]]
// CHECK: define{{.*}}@_ZN23awaitableWithGetAwaiter13await_suspendIN18AwaitTransformTask12promise_typeEEEvSt16coroutine_handleIT_E{{.*}}#[[NORMAL_ATTR]]
// CHECK: define{{.*}}@_ZN18AwaitTransformTask12promise_type12FinalAwaiter13await_suspendIS0_EESt16coroutine_handleIvES3_IT_E{{.*}}#[[NORMAL_ATTR]]
// CHECK-NOT: attributes #[[NORMAL_ATTR]] = noinline
// CHECK: attributes #[[NOINLINE_ATTR]] = {{.*}}noinline
// CHECK-NOT: attributes #[[ALWAYS_INLINE_ATTR]] = {{.*}}noinline
// CHECK: attributes #[[ALWAYS_INLINE_ATTR]] = {{.*}}alwaysinline
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