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// 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: @"\01?f@@YA?AUcoro_t@@XZ"(
// CHECK: invoke void @"\01?may_throw@@YAXXZ"()
// CHECK: to label %[[CONT:.+]] unwind label %[[EHCLEANUP:.+]]
// CHECK: [[EHCLEANUP]]:
// CHECK: %[[INNERPAD:.+]] = cleanuppad within none []
// CHECK: call void @"\01??_DCleanup@@QEAAXXZ"(
// CHECK: cleanupret from %{{.+}} unwind label %[[CATCHDISPATCH:.+]]
// CHECK: [[CATCHDISPATCH]]:
// CHECK: catchswitch within none [label %[[CATCHPAD:.+]]] unwind label %[[COROENDBB:.+]]
// CHECK: [[CATCHPAD]]:
// CHECK: call void @"\01?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]]
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