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