59 lines
1.8 KiB
C++
59 lines
1.8 KiB
C++
// Verify that we synthesized the coroutine for a lambda inside of a function template.
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// RUN: %clang_cc1 -std=c++1z -fcoroutines-ts -triple=x86_64-unknown-linux-gnu -emit-llvm -o - %s -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck %s
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namespace std::experimental {
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template <typename R, typename... T> struct coroutine_traits {
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using promise_type = typename R::promise_type;
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};
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template <class Promise = void> struct coroutine_handle;
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template <> struct coroutine_handle<void> {
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static coroutine_handle from_address(void *) noexcept;
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coroutine_handle() = default;
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template <class PromiseType>
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coroutine_handle(coroutine_handle<PromiseType>) noexcept;
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};
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template <class Promise> struct coroutine_handle : coroutine_handle<void> {
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coroutine_handle() = default;
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static coroutine_handle from_address(void *) noexcept;
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};
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}
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struct suspend_always {
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bool await_ready() noexcept;
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void await_suspend(std::experimental::coroutine_handle<>) noexcept;
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void await_resume() noexcept;
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};
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struct Task {
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struct promise_type {
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Task get_return_object();
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void return_void() {}
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suspend_always initial_suspend() noexcept;
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suspend_always final_suspend() noexcept;
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void unhandled_exception() noexcept;
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};
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};
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template <typename _AwrT> auto SyncAwait(_AwrT &&A) {
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if (!A.await_ready()) {
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auto AwaitAsync = [&]() -> Task {
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try { (void)(co_await A); } catch (...) {}
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};
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Task t = AwaitAsync();
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}
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return A.await_resume();
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}
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void f() {
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suspend_always test;
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SyncAwait(test);
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}
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// Verify that we synthesized the coroutine for a lambda inside SyncAwait
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// CHECK-LABEL: define linkonce_odr void @_ZZ9SyncAwaitIR14suspend_alwaysEDaOT_ENKUlvE_clEv(
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// CHECK: alloca %"struct.Task::promise_type"
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// CHECK: call token @llvm.coro.id(
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// CHECK: call i8 @llvm.coro.suspend(
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// CHECK: call i1 @llvm.coro.end(
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