65b34b78f8
co_await and co_yield are represented by (classes derived from) CoroutineSuspendExpr. That has a number of child nodes, not all of which are used for code-generation. In particular the operand is represented multiple times, and, like the problem with co_return (55406) it must only be emitted in the CFG exactly once. The operand also appears inside OpaqueValueExprs, but that's ok. This adds a visitor for SuspendExprs to emit the required children in the correct order. Note that this CFG is pre-coro xform. We don't have initial or final suspend points. Reviewed By: bruno Differential Revision: https://reviews.llvm.org/D127236
52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -Wthread-safety -std=c++17 -fcoroutines-ts %s
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// expected-no-diagnostics
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namespace std {
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template <typename _Result, typename...>
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struct coroutine_traits {
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using promise_type = typename _Result::promise_type;
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};
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template <typename _Promise = void>
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struct coroutine_handle;
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template <>
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struct coroutine_handle<void> {
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static coroutine_handle from_address(void *__a) noexcept;
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void resume() const noexcept;
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void destroy() const noexcept;
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};
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template <typename _Promise>
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struct coroutine_handle : coroutine_handle<> {};
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struct suspend_always {
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bool await_ready() const noexcept;
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void await_suspend(coroutine_handle<>) const noexcept;
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void await_resume() const noexcept;
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};
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} // namespace std
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class Task {
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public:
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struct promise_type {
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public:
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std::suspend_always initial_suspend() noexcept;
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std::suspend_always final_suspend() noexcept;
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Task get_return_object() noexcept;
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void unhandled_exception() noexcept;
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void return_value(int value) noexcept;
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std::suspend_always yield_value(int value) noexcept;
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};
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};
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Task Foo() noexcept {
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// ICE'd
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co_yield({ int frame = 0; 0; });
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co_await({ int frame = 0; std::suspend_always(); });
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co_return({ int frame = 0; 0; });
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}
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