1 // RUN: %clang_cc1 -std=c++14 -fcoroutines-ts -triple=x86_64-pc-windows-msvc18.0.0 -emit-llvm %s -o - -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck %s
2 // RUN: %clang_cc1 -std=c++14 -fcoroutines-ts -triple=x86_64-unknown-linux-gnu -emit-llvm -o - %s -fexceptions -fcxx-exceptions -disable-llvm-passes | FileCheck --check-prefix=CHECK-LPAD %s
3 
4 #include "Inputs/coroutine.h"
5 
6 namespace coro = std::experimental::coroutines_v1;
7 
8 namespace std {
9   using exception_ptr = int;
10   exception_ptr current_exception();
11 }
12 
13 struct coro_t {
14   struct promise_type {
15     coro_t get_return_object() {
16       coro::coroutine_handle<promise_type>{};
17       return {};
18     }
19     coro::suspend_never initial_suspend() { return {}; }
20     coro::suspend_never final_suspend() noexcept { return {}; }
21     void return_void(){}
22     void unhandled_exception() noexcept;
23   };
24 };
25 
26 struct Cleanup { ~Cleanup(); };
27 void may_throw();
28 
29 coro_t f() {
30   Cleanup x;
31   may_throw();
32   co_return;
33 }
34 
35 // CHECK: @"?f@@YA?AUcoro_t@@XZ"(
36 // CHECK:   invoke void @"?may_throw@@YAXXZ"()
37 // CHECK:       to label %{{.+}} unwind label %[[EHCLEANUP:.+]]
38 // CHECK: [[EHCLEANUP]]:
39 // CHECK:   %[[INNERPAD:.+]] = cleanuppad within none []
40 // CHECK:   call void @"??1Cleanup@@QEAA@XZ"(
41 // CHECK:   cleanupret from %[[INNERPAD]] unwind label %[[CATCHSW:.+]]
42 // CHECK: [[CATCHSW]]:
43 // CHECK:   %[[CATCHSWTOK:.+]] = catchswitch within none [label %[[CATCH:.+]]] unwind label
44 // CHECK: [[CATCH]]:
45 // CHECK:   %[[CATCHTOK:.+]] = catchpad within [[CATCHSWTOK:.+]]
46 // CHECK:   call void @"?unhandled_exception@promise_type@coro_t@@QEAAXXZ"
47 // CHECK:   catchret from %[[CATCHTOK]] to label %[[CATCHRETDEST:.+]]
48 // CHECK: [[CATCHRETDEST]]:
49 // CHECK-NEXT: br label %[[TRYCONT:.+]]
50 // CHECK: [[TRYCONT]]:
51 // CHECK-NEXT: br label %[[COROFIN:.+]]
52 // CHECK: [[COROFIN]]:
53 // CHECK-NEXT: call void @"?final_suspend@promise_type@coro_t@@QEAA?AUsuspend_never@coroutines_v1@experimental@std@@XZ"(
54 
55 // CHECK-LPAD: @_Z1fv(
56 // CHECK-LPAD:   invoke void @_Z9may_throwv()
57 // CHECK-LPAD:       to label %[[CONT:.+]] unwind label %[[CLEANUP:.+]]
58 // CHECK-LPAD: [[CLEANUP]]:
59 // CHECK-LPAD:   call void @_ZN7CleanupD1Ev(%struct.Cleanup* {{[^,]*}} %x) #2
60 // CHECK-LPAD:   br label %[[CATCH:.+]]
61 
62 // CHECK-LPAD: [[CATCH]]:
63 // CHECK-LPAD:    call i8* @__cxa_begin_catch
64 // CHECK-LPAD:    call void @_ZN6coro_t12promise_type19unhandled_exceptionEv(%"struct.coro_t::promise_type"* {{[^,]*}} %__promise) #2
65 // CHECK-LPAD:    invoke void @__cxa_end_catch()
66 // CHECK-LPAD-NEXT:  to label %[[CATCHRETDEST:.+]] unwind label
67 // CHECK-LPAD: [[CATCHRETDEST]]:
68 // CHECK-LPAD-NEXT: br label %[[TRYCONT:.+]]
69 // CHECK-LPAD: [[TRYCONT]]:
70 // CHECK-LPAD: br label %[[COROFIN:.+]]
71 // CHECK-LPAD: [[COROFIN]]:
72 // CHECK-LPAD-NEXT: call void @_ZN6coro_t12promise_type13final_suspendEv(
73