// Test for PR59181. Tests that no conditional cleanup is created around await_suspend. // // REQUIRES: x86-registered-target // // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm %s -o - -std=c++20 -disable-llvm-passes -fsanitize-address-use-after-scope | FileCheck %s #include "Inputs/coroutine.h" struct Task { int value_; struct promise_type { Task get_return_object() { return Task{0}; } std::suspend_never initial_suspend() noexcept { return {}; } std::suspend_never final_suspend() noexcept { return {}; } void return_value(Task t) noexcept {} void unhandled_exception() noexcept {} auto await_transform(Task t) { struct Suspension { auto await_ready() noexcept { return false;} auto await_suspend(std::coroutine_handle<> coro) { coro.destroy(); } auto await_resume() noexcept { return 0; } }; return Suspension{}; } }; }; Task bar(bool cond) { co_return cond ? Task{ co_await Task{}}: Task{}; } void foo() { bar(true); } // CHECK: cleanup.cont:{{.*}} // CHECK-NEXT: load i8 // CHECK-NEXT: trunc // CHECK-NEXT: store i1 false // CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[REF:%ref.tmp[0-9]+]]) // CHECK: await.suspend:{{.*}} // CHECK-NOT: call void @llvm.lifetime.start.p0(i64 8, ptr [[REF]]) // CHECK: call void @_ZZN4Task12promise_type15await_transformES_EN10Suspension13await_suspendESt16coroutine_handleIvE // CHECK-NEXT: call void @llvm.lifetime.end.p0(i64 8, ptr [[REF]])