| 1 | // 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 |
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| 2 | // 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 |
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| 3 | |
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| 4 | namespace std::experimental { |
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| 5 | template <typename R, typename... T> struct coroutine_traits { |
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| 6 | using promise_type = typename R::promise_type; |
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| 7 | }; |
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| 8 | |
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| 9 | template <class Promise = void> struct coroutine_handle; |
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| 10 | |
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| 11 | template <> struct coroutine_handle<void> { |
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| 12 | static coroutine_handle from_address(void *) noexcept; |
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| 13 | coroutine_handle() = default; |
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| 14 | template <class PromiseType> |
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| 15 | coroutine_handle(coroutine_handle<PromiseType>) noexcept; |
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| 16 | }; |
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| 17 | template <class Promise> struct coroutine_handle: coroutine_handle<void> { |
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| 18 | coroutine_handle() = default; |
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| 19 | static coroutine_handle from_address(void *) noexcept; |
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| 20 | }; |
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| 21 | } |
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| 22 | |
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| 23 | struct suspend_always { |
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| 24 | bool await_ready() noexcept; |
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| 25 | void await_suspend(std::experimental::coroutine_handle<>) noexcept; |
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| 26 | void await_resume() noexcept; |
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| 27 | }; |
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| 28 | |
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| 29 | struct coro_t { |
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| 30 | struct promise_type { |
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| 31 | coro_t get_return_object() noexcept; |
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| 32 | suspend_always initial_suspend() noexcept; |
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| 33 | suspend_always final_suspend() noexcept; |
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| 34 | void return_void() noexcept; |
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| 35 | void unhandled_exception() noexcept; |
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| 36 | }; |
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| 37 | }; |
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| 38 | |
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| 39 | struct Cleanup { ~Cleanup(); }; |
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| 40 | void may_throw(); |
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| 41 | |
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| 42 | coro_t f() { |
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| 43 | Cleanup x; |
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| 44 | may_throw(); |
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| 45 | co_return; |
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| 46 | } |
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| 47 | |
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| 48 | // CHECK: @"?f@@YA?AUcoro_t@@XZ"( |
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| 49 | // CHECK: invoke void @"?may_throw@@YAXXZ"() |
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| 50 | // CHECK: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]] |
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| 51 | // CHECK: [[EHCLEANUP]]: |
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| 52 | // CHECK: %[[INNERPAD:.+]] = cleanuppad within none [] |
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| 53 | // CHECK: call void @"??1Cleanup@@QEAA@XZ"( |
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| 54 | // CHECK: cleanupret from %{{.+}} unwind label %[[CATCHDISPATCH:.+]] |
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| 55 | |
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| 56 | // CHECK: [[CATCHDISPATCH]]: |
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| 57 | // CHECK: catchswitch within none [label %[[CATCHPAD:.+]]] unwind label %[[COROENDBB:.+]] |
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| 58 | // CHECK: [[CATCHPAD]]: |
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| 59 | // CHECK: call void @"?unhandled_exception@promise_type@coro_t@@QEAAXXZ" |
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| 60 | |
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| 61 | // CHECK: [[COROENDBB]]: |
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| 62 | // CHECK-NEXT: %[[CLPAD:.+]] = cleanuppad within none |
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| 63 | // CHECK-NEXT: call i1 @llvm.coro.end(i8* null, i1 true) [ "funclet"(token %[[CLPAD]]) ] |
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| 64 | // CHECK-NEXT: cleanupret from %[[CLPAD]] unwind label |
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| 65 | |
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| 66 | // CHECK-LPAD: @_Z1fv( |
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| 67 | // CHECK-LPAD: invoke void @_Z9may_throwv() |
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| 68 | // CHECK-LPAD: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]] |
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| 69 | // CHECK-LPAD: [[EHCLEANUP]]: |
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| 70 | // CHECK-LPAD: landingpad { i8*, i32 } |
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| 71 | // CHECK-LPAD: catch |
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| 72 | // CHECK-LPAD: call void @_ZN7CleanupD1Ev( |
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| 73 | // CHECK-LPAD: call i8* @__cxa_begin_catch |
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| 74 | // CHECK-LPAD: call void @_ZN6coro_t12promise_type19unhandled_exceptionEv |
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| 75 | // CHECK-LPAD: invoke void @__cxa_end_catch() |
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| 76 | // CHECK-LPAD: to label %{{.+}} unwind label %[[UNWINDBB:.+]] |
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| 77 | |
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| 78 | // CHECK-LPAD: [[UNWINDBB]]: |
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| 79 | // CHECK-LPAD: %[[I1RESUME:.+]] = call i1 @llvm.coro.end(i8* null, i1 true) |
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| 80 | // CHECK-LPAD: br i1 %[[I1RESUME]], label %[[EHRESUME:.+]], label |
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| 81 | // CHECK-LPAD: [[EHRESUME]]: |
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| 82 | // CHECK-LPAD-NEXT: %[[exn:.+]] = load i8*, i8** %exn.slot, align 8 |
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| 83 | // CHECK-LPAD-NEXT: %[[sel:.+]] = load i32, i32* %ehselector.slot, align 4 |
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| 84 | // CHECK-LPAD-NEXT: %[[val1:.+]] = insertvalue { i8*, i32 } undef, i8* %[[exn]], 0 |
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| 85 | // CHECK-LPAD-NEXT: %[[val2:.+]] = insertvalue { i8*, i32 } %[[val1]], i32 %[[sel]], 1 |
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| 86 | // CHECK-LPAD-NEXT: resume { i8*, i32 } %[[val2]] |
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| 87 | |
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