| // RUN: %clang_cc1 -std=c++1z -fcoroutines-ts -triple=x86_64-pc-windows-msvc18.0.0 -emit-llvm %s -o - -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck %s |
| // 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 --check-prefix=CHECK-LPAD %s |
| |
| namespace std::experimental { |
| template <typename R, typename... T> struct coroutine_traits { |
| using promise_type = typename R::promise_type; |
| }; |
| |
| template <class Promise = void> struct coroutine_handle; |
| |
| template <> struct coroutine_handle<void> { |
| static coroutine_handle from_address(void *) noexcept; |
| coroutine_handle() = default; |
| template <class PromiseType> |
| coroutine_handle(coroutine_handle<PromiseType>) noexcept; |
| }; |
| template <class Promise> struct coroutine_handle: coroutine_handle<void> { |
| coroutine_handle() = default; |
| static coroutine_handle from_address(void *) noexcept; |
| }; |
| } |
| |
| struct suspend_always { |
| bool await_ready() noexcept; |
| void await_suspend(std::experimental::coroutine_handle<>) noexcept; |
| void await_resume() noexcept; |
| }; |
| |
| struct coro_t { |
| struct promise_type { |
| coro_t get_return_object() noexcept; |
| suspend_always initial_suspend() noexcept; |
| suspend_always final_suspend() noexcept; |
| void return_void() noexcept; |
| void unhandled_exception() noexcept; |
| }; |
| }; |
| |
| struct Cleanup { ~Cleanup(); }; |
| void may_throw(); |
| |
| coro_t f() { |
| Cleanup x; |
| may_throw(); |
| co_return; |
| } |
| |
| // CHECK: @"?f@@YA?AUcoro_t@@XZ"( |
| // CHECK: invoke void @"?may_throw@@YAXXZ"() |
| // CHECK: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]] |
| // CHECK: [[EHCLEANUP]]: |
| // CHECK: %[[INNERPAD:.+]] = cleanuppad within none [] |
| // CHECK: call void @"??1Cleanup@@QEAA@XZ"( |
| // CHECK: cleanupret from %{{.+}} unwind label %[[CATCHDISPATCH:.+]] |
| |
| // CHECK: [[CATCHDISPATCH]]: |
| // CHECK: catchswitch within none [label %[[CATCHPAD:.+]]] unwind label %[[COROENDBB:.+]] |
| // CHECK: [[CATCHPAD]]: |
| // CHECK: call void @"?unhandled_exception@promise_type@coro_t@@QEAAXXZ" |
| |
| // CHECK: [[COROENDBB]]: |
| // CHECK-NEXT: %[[CLPAD:.+]] = cleanuppad within none |
| // CHECK-NEXT: call i1 @llvm.coro.end(i8* null, i1 true) [ "funclet"(token %[[CLPAD]]) ] |
| // CHECK-NEXT: cleanupret from %[[CLPAD]] unwind label |
| |
| // CHECK-LPAD: @_Z1fv( |
| // CHECK-LPAD: invoke void @_Z9may_throwv() |
| // CHECK-LPAD: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]] |
| // CHECK-LPAD: [[EHCLEANUP]]: |
| // CHECK-LPAD: landingpad { i8*, i32 } |
| // CHECK-LPAD: catch |
| // CHECK-LPAD: call void @_ZN7CleanupD1Ev( |
| // CHECK-LPAD: call i8* @__cxa_begin_catch |
| // CHECK-LPAD: call void @_ZN6coro_t12promise_type19unhandled_exceptionEv |
| // CHECK-LPAD: invoke void @__cxa_end_catch() |
| // CHECK-LPAD: to label %{{.+}} unwind label %[[UNWINDBB:.+]] |
| |
| // CHECK-LPAD: [[UNWINDBB]]: |
| // CHECK-LPAD: %[[I1RESUME:.+]] = call i1 @llvm.coro.end(i8* null, i1 true) |
| // CHECK-LPAD: br i1 %[[I1RESUME]], label %[[EHRESUME:.+]], label |
| // CHECK-LPAD: [[EHRESUME]]: |
| // CHECK-LPAD-NEXT: %[[exn:.+]] = load i8*, i8** %exn.slot, align 8 |
| // CHECK-LPAD-NEXT: %[[sel:.+]] = load i32, i32* %ehselector.slot, align 4 |
| // CHECK-LPAD-NEXT: %[[val1:.+]] = insertvalue { i8*, i32 } undef, i8* %[[exn]], 0 |
| // CHECK-LPAD-NEXT: %[[val2:.+]] = insertvalue { i8*, i32 } %[[val1]], i32 %[[sel]], 1 |
| // CHECK-LPAD-NEXT: resume { i8*, i32 } %[[val2]] |