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