xref: /aosp_15_r20/external/clang/test/CodeGenCXX/noexcept.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions -std=c++11 | FileCheck %s
2*67e74705SXin Li 
3*67e74705SXin Li // rdar://11904428
4*67e74705SXin Li //   Ensure that we call __cxa_begin_catch before calling
5*67e74705SXin Li //   std::terminate in a noexcept function.
6*67e74705SXin Li namespace test0 {
7*67e74705SXin Li   void foo();
8*67e74705SXin Li 
9*67e74705SXin Li   struct A {
10*67e74705SXin Li     A();
11*67e74705SXin Li     ~A();
12*67e74705SXin Li   };
13*67e74705SXin Li 
test()14*67e74705SXin Li   void test() noexcept {
15*67e74705SXin Li     A a;
16*67e74705SXin Li     foo();
17*67e74705SXin Li   }
18*67e74705SXin Li }
19*67e74705SXin Li // CHECK-LABEL:    define void @_ZN5test04testEv()
20*67e74705SXin Li // CHECK:      [[EXN:%.*]] = alloca i8*
21*67e74705SXin Li //   This goes to the terminate lpad.
22*67e74705SXin Li // CHECK:      invoke void @_ZN5test01AC1Ev(
23*67e74705SXin Li //   This goes to the cleanup-and-then-terminate lpad.
24*67e74705SXin Li // CHECK:      invoke void @_ZN5test03fooEv()
25*67e74705SXin Li //   Destructors don't throw by default in C++11.
26*67e74705SXin Li // CHECK:      call void @_ZN5test01AD1Ev(
27*67e74705SXin Li //   Cleanup lpad.
28*67e74705SXin Li // CHECK:      [[T0:%.*]] = landingpad
29*67e74705SXin Li // CHECK-NEXT:   catch i8* null
30*67e74705SXin Li // CHECK-NEXT: [[T1:%.*]] = extractvalue { i8*, i32 } [[T0]], 0
31*67e74705SXin Li // CHECK-NEXT: store i8* [[T1]], i8** [[EXN]]
32*67e74705SXin Li //   (Calling this destructor is not technically required.)
33*67e74705SXin Li // CHECK:      call void @_ZN5test01AD1Ev(
34*67e74705SXin Li // CHECK-NEXT: br label
35*67e74705SXin Li //   The terminate landing pad jumps in here for some reason.
36*67e74705SXin Li // CHECK:      [[T0:%.*]] = landingpad
37*67e74705SXin Li // CHECK-NEXT:   catch i8* null
38*67e74705SXin Li // CHECK-NEXT: [[T1:%.*]] = extractvalue { i8*, i32 } [[T0]], 0
39*67e74705SXin Li // CHECK-NEXT: call void @__clang_call_terminate(i8* [[T1]])
40*67e74705SXin Li // CHECK-NEXT: unreachable
41*67e74705SXin Li //   The terminate handler chained to by the cleanup lpad.
42*67e74705SXin Li // CHECK:      [[T0:%.*]] = load i8*, i8** [[EXN]]
43*67e74705SXin Li // CHECK-NEXT: call void @__clang_call_terminate(i8* [[T0]])
44*67e74705SXin Li // CHECK-NEXT: unreachable
45*67e74705SXin Li 
46*67e74705SXin Li // CHECK-LABEL:  define linkonce_odr hidden void @__clang_call_terminate(
47*67e74705SXin Li // CHECK:      call i8* @__cxa_begin_catch(
48*67e74705SXin Li // CHECK-NEXT: call void @_ZSt9terminatev()
49*67e74705SXin Li // CHECK-NEXT: unreachable
50