1 // RUN: %clang_cc1 -std=c++20 -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++20 -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 std {
7   using exception_ptr = int;
8   exception_ptr current_exception();
9 }
10 
11 struct coro_t {
12   struct promise_type {
13     coro_t get_return_object() {
14       std::coroutine_handle<promise_type>{};
15       return {};
16     }
17     std::suspend_never initial_suspend() { return {}; }
18     std::suspend_never final_suspend() noexcept { return {}; }
19     void return_void(){}
20     void unhandled_exception() noexcept;
21   };
22 };
23 
24 struct Cleanup { ~Cleanup(); };
25 void may_throw();
26 
27 coro_t f() {
28   Cleanup x;
29   may_throw();
30   co_return;
31 }
32 
33 // CHECK: @"?f@@YA?AUcoro_t@@XZ"(
34 // CHECK:   invoke void @"?may_throw@@YAXXZ"()
35 // CHECK:       to label %{{.+}} unwind label %[[EHCLEANUP:.+]]
36 // CHECK: [[EHCLEANUP]]:
37 // CHECK:   %[[INNERPAD:.+]] = cleanuppad within none []
38 // CHECK:   call void @"??1Cleanup@@QEAA@XZ"(
39 // CHECK:   cleanupret from %[[INNERPAD]] unwind label %[[CATCHSW:.+]]
40 // CHECK: [[CATCHSW]]:
41 // CHECK:   %[[CATCHSWTOK:.+]] = catchswitch within none [label %[[CATCH:.+]]] unwind label
42 // CHECK: [[CATCH]]:
43 // CHECK:   %[[CATCHTOK:.+]] = catchpad within [[CATCHSWTOK:.+]]
44 // CHECK:   call void @"?unhandled_exception@promise_type@coro_t@@QEAAXXZ"
45 // CHECK:   catchret from %[[CATCHTOK]] to label %[[CATCHRETDEST:.+]]
46 // CHECK: [[CATCHRETDEST]]:
47 // CHECK-NEXT: br label %[[TRYCONT:.+]]
48 // CHECK: [[TRYCONT]]:
49 // CHECK-NEXT: br label %[[COROFIN:.+]]
50 // CHECK: [[COROFIN]]:
51 // CHECK-NEXT: bitcast %"struct.std::suspend_never"* %{{.+}} to i8*
52 // CHECK-NEXT: call void @llvm.lifetime.start.p0i8(
53 // CHECK-NEXT: call void @"?final_suspend@promise_type@coro_t@@QEAA?AUsuspend_never@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: bitcast %"struct.std::suspend_never"* %{{.+}} to i8*
73 // CHECK-LPAD-NEXT: call void @llvm.lifetime.start.p0i8(
74 // CHECK-LPAD-NEXT: call void @_ZN6coro_t12promise_type13final_suspendEv(
75