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
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
// RUN: %clang_cc1 -triple i386-apple-darwin10 -fobjc-runtime=macosx-fragile-10.5 -emit-llvm -fexceptions -fobjc-exceptions -O2 -o - %s | FileCheck %s
// Test we maintain at least a basic amount of interoperation between
// ObjC and C++ exceptions in the legacy runtime.
void foo(void);
void test0(id obj) {
@synchronized(obj) {
foo();
}
}
// CHECK-LABEL: define{{.*}} void @_Z5test0P11objc_object(
// Enter the @synchronized block.
// CHECK: call i32 @objc_sync_enter(ptr [[OBJ:%.*]])
// CHECK: call void @objc_exception_try_enter(ptr nonnull [[BUF:%.*]])
// CHECK-NEXT: [[T1:%.*]] = call i32 @_setjmp(ptr nonnull [[BUF]])
// CHECK-NEXT: [[T2:%.*]] = icmp eq i32 [[T1]], 0
// CHECK-NEXT: br i1 [[T2]],
// Body.
// CHECK: invoke void @_Z3foov()
// Leave the @synchronized. The reload of obj here is unnecessary.
// CHECK: call void @objc_exception_try_exit(ptr nonnull [[BUF]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call i32 @objc_sync_exit(ptr [[T0]])
// CHECK-NEXT: ret void
// Real EH cleanup.
// CHECK: [[T0:%.*]] = landingpad
// CHECK-NEXT: cleanup
// CHECK-NEXT: call void @objc_exception_try_exit(ptr nonnull [[BUF]])
// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call i32 @objc_sync_exit(ptr [[T0]])
// CHECK-NEXT: resume
// ObjC EH "cleanup".
// CHECK: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: call i32 @objc_sync_exit(ptr [[T0]])
// CHECK-NEXT: [[T0:%.*]] = call ptr @objc_exception_extract(ptr nonnull [[BUF]])
// CHECK-NEXT: call void @objc_exception_throw(ptr [[T0]])
// CHECK-NEXT: unreachable
void test1(id obj, bool *failed) {
@try {
foo();
} @catch (...) {
*failed = true;
}
}
// CHECK-LABEL: define{{.*}} void @_Z5test1P11objc_objectPb(
// Enter the @try block.
// CHECK: call void @objc_exception_try_enter(ptr nonnull [[BUF:%.*]])
// CHECK-NEXT: [[T1:%.*]] = call i32 @_setjmp(ptr nonnull [[BUF]])
// CHECK-NEXT: [[T2:%.*]] = icmp eq i32 [[T1]], 0
// CHECK-NEXT: br i1 [[T2]],
// Body.
// CHECK: invoke void @_Z3foov()
// Catch handler. Reload of 'failed' address is unnecessary.
// CHECK: [[T0:%.*]] = load ptr, ptr
// CHECK-NEXT: store i8 1, ptr [[T0]],
// CHECK-NEXT: br label
// Leave the @try.
// CHECK: call void @objc_exception_try_exit(ptr nonnull [[BUF]])
// CHECK-NEXT: br label
// CHECK: ret void
// Real EH cleanup.
// CHECK: [[T0:%.*]] = landingpad
// CHECK-NEXT: cleanup
// CHECK-NEXT: call void @objc_exception_try_exit(ptr nonnull [[BUF]])
// CHECK-NEXT: resume
|
