Gitiles
Code Review Sign In
gerrit-public.fairphone.software / toolchain / llvm-project / 611cdb9a63cb6ace5c113957432cf19ef6895fe5 / . / clang / test / CodeGenCXX / microsoft-abi-dynamic-cast.cpp
blob: 225407b7fa9cb350969e946985f066ce5252b2d6 [file] [log] [blame]
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]1// RUN: %clang_cc1 -emit-llvm -O1 -o - -triple=i386-pc-win32 %s | FileCheck %s
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]2
3struct S { char a; };
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]4struct V { virtual void f(); };
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]5struct A : virtual V {};
6struct B : S, virtual V {};
7struct T {};
8
9T* test0() { return dynamic_cast<T*>((B*)0); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]10// CHECK-LABEL: define noalias %struct.T* @"\01?test0@@YAPAUT@@XZ"()
11// CHECK: ret %struct.T* null
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]12
13T* test1(V* x) { return &dynamic_cast<T&>(*x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]14// CHECK-LABEL: define %struct.T* @"\01?test1@@YAPAUT@@PAUV@@@Z"(%struct.V* %x)
15// CHECK: [[CAST:%.*]] = bitcast %struct.V* %x to i8*
David Majnemer611cdb92014-07-07 08:09:15 +0000[diff] [blame^]16// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTDynamicCast(i8* [[CAST]], i32 0, i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUV@@@8" to i8*), i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUT@@@8" to i8*), i32 1)
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]17// CHECK-NEXT: [[RET:%.*]] = bitcast i8* [[CALL]] to %struct.T*
18// CHECK-NEXT: ret %struct.T* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]19
20T* test2(A* x) { return &dynamic_cast<T&>(*x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]21// CHECK-LABEL: define %struct.T* @"\01?test2@@YAPAUT@@PAUA@@@Z"(%struct.A* %x)
22// CHECK: [[CAST:%.*]] = bitcast %struct.A* %x to i8*
23// CHECK-NEXT: [[BITCAST:%.*]] = bitcast %struct.A* %x to i8**
24// CHECK-NEXT: [[VBTBL:%.*]] = load i8** [[BITCAST]], align 4
25// CHECK-NEXT: [[VBOFFP:%.*]] = getelementptr inbounds i8* [[VBTBL]], i32 4
26// CHECK-NEXT: [[VBOFFPCAST:%.*]] = bitcast i8* [[VBOFFP]] to i32*
27// CHECK-NEXT: [[VBOFFS:%.*]] = load i32* [[VBOFFPCAST]], align 4
28// CHECK-NEXT: [[ADJ:%.*]] = getelementptr inbounds i8* [[CAST]], i32 [[VBOFFS]]
David Majnemer611cdb92014-07-07 08:09:15 +0000[diff] [blame^]29// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTDynamicCast(i8* [[ADJ]], i32 [[VBOFFS]], i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUA@@@8" to i8*), i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUT@@@8" to i8*), i32 1)
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]30// CHECK-NEXT: [[RET:%.*]] = bitcast i8* [[CALL]] to %struct.T*
31// CHECK-NEXT: ret %struct.T* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]32
33T* test3(B* x) { return &dynamic_cast<T&>(*x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]34// CHECK-LABEL: define %struct.T* @"\01?test3@@YAPAUT@@PAUB@@@Z"(%struct.B* %x)
35// CHECK: [[VOIDP:%.*]] = getelementptr inbounds %struct.B* %x, i32 0, i32 0, i32 0
36// CHECK-NEXT: [[VBPTR:%.*]] = getelementptr inbounds i8* [[VOIDP]], i32 4
37// CHECK-NEXT: [[BITCAST:%.*]] = bitcast i8* [[VBPTR:%.*]] to i8**
38// CHECK-NEXT: [[VBTBL:%.*]] = load i8** [[BITCAST]], align 4
39// CHECK-NEXT: [[VBOFFP:%.*]] = getelementptr inbounds i8* [[VBTBL]], i32 4
40// CHECK-NEXT: [[VBOFFPCAST:%.*]] = bitcast i8* [[VBOFFP]] to i32*
41// CHECK-NEXT: [[VBOFFS:%.*]] = load i32* [[VBOFFPCAST]], align 4
42// CHECK-NEXT: [[DELTA:%.*]] = add nsw i32 [[VBOFFS]], 4
43// CHECK-NEXT: [[ADJ:%.*]] = getelementptr inbounds i8* [[VOIDP]], i32 [[DELTA]]
David Majnemer611cdb92014-07-07 08:09:15 +0000[diff] [blame^]44// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTDynamicCast(i8* [[ADJ]], i32 [[DELTA]], i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUB@@@8" to i8*), i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUT@@@8" to i8*), i32 1)
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]45// CHECK-NEXT: [[RET:%.*]] = bitcast i8* [[CALL]] to %struct.T*
46// CHECK-NEXT: ret %struct.T* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]47
48T* test4(V* x) { return dynamic_cast<T*>(x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]49// CHECK-LABEL: define %struct.T* @"\01?test4@@YAPAUT@@PAUV@@@Z"(%struct.V* %x)
50// CHECK: [[CAST:%.*]] = bitcast %struct.V* %x to i8*
David Majnemer611cdb92014-07-07 08:09:15 +0000[diff] [blame^]51// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTDynamicCast(i8* [[CAST]], i32 0, i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUV@@@8" to i8*), i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUT@@@8" to i8*), i32 0)
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]52// CHECK-NEXT: [[RET:%.*]] = bitcast i8* [[CALL]] to %struct.T*
53// CHECK-NEXT: ret %struct.T* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]54
55T* test5(A* x) { return dynamic_cast<T*>(x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]56// CHECK-LABEL: define %struct.T* @"\01?test5@@YAPAUT@@PAUA@@@Z"(%struct.A* %x)
57// CHECK: [[CHECK:%.*]] = icmp eq %struct.A* %x, null
58// CHECK-NEXT: br i1 [[CHECK]]
59// CHECK: [[VOIDP:%.*]] = bitcast %struct.A* %x to i8*
60// CHECK-NEXT: [[BITCAST:%.*]] = bitcast %struct.A* %x to i8**
61// CHECK-NEXT: [[VBTBL:%.*]] = load i8** [[BITCAST]], align 4
62// CHECK-NEXT: [[VBOFFP:%.*]] = getelementptr inbounds i8* [[VBTBL]], i32 4
63// CHECK-NEXT: [[VBOFFPCAST:%.*]] = bitcast i8* [[VBOFFP]] to i32*
64// CHECK-NEXT: [[VBOFFS:%.*]] = load i32* [[VBOFFPCAST:%.*]], align 4
65// CHECK-NEXT: [[ADJ:%.*]] = getelementptr inbounds i8* [[VOIDP]], i32 [[VBOFFS]]
David Majnemer611cdb92014-07-07 08:09:15 +0000[diff] [blame^]66// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTDynamicCast(i8* [[ADJ]], i32 [[VBOFFS]], i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUA@@@8" to i8*), i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUT@@@8" to i8*), i32 0)
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]67// CHECK-NEXT: [[RES:%.*]] = bitcast i8* [[CALL]] to %struct.T*
68// CHECK-NEXT: br label
69// CHECK: [[RET:%.*]] = phi %struct.T*
70// CHECK-NEXT: ret %struct.T* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]71
72T* test6(B* x) { return dynamic_cast<T*>(x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]73// CHECK-LABEL: define %struct.T* @"\01?test6@@YAPAUT@@PAUB@@@Z"(%struct.B* %x)
74// CHECK: [[CHECK:%.*]] = icmp eq %struct.B* %x, null
75// CHECK-NEXT: br i1 [[CHECK]]
76// CHECK: [[CAST:%.*]] = getelementptr inbounds %struct.B* %x, i32 0, i32 0, i32 0
77// CHECK-NEXT: [[VBPTR:%.*]] = getelementptr inbounds i8* [[CAST]], i32 4
78// CHECK-NEXT: [[BITCAST:%.*]] = bitcast i8* [[VBPTR]] to i8**
79// CHECK-NEXT: [[VBTBL:%.*]] = load i8** [[BITCAST]], align 4
80// CHECK-NEXT: [[VBOFFP:%.*]] = getelementptr inbounds i8* [[VBTBL]], i32 4
81// CHECK-NEXT: [[VBOFFPCAST:%.*]] = bitcast i8* [[VBOFFP]] to i32*
82// CHECK-NEXT: [[VBOFFS:%.*]] = load i32* [[VBOFFPCAST:%.*]], align 4
83// CHECK-NEXT: [[DELTA:%.*]] = add nsw i32 [[VBOFFS]], 4
84// CHECK-NEXT: [[ADJ:%.*]] = getelementptr inbounds i8* [[CAST]], i32 [[DELTA]]
David Majnemer611cdb92014-07-07 08:09:15 +0000[diff] [blame^]85// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTDynamicCast(i8* [[ADJ]], i32 [[DELTA]], i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUB@@@8" to i8*), i8* bitcast (%rtti.TypeDescriptor7* @"\01??_R0?AUT@@@8" to i8*), i32 0)
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]86// CHECK-NEXT: [[RES:%.*]] = bitcast i8* [[CALL]] to %struct.T*
87// CHECK-NEXT: br label
88// CHECK: [[RET:%.*]] = phi %struct.T*
89// CHECK-NEXT: ret %struct.T* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]90
91void* test7(V* x) { return dynamic_cast<void*>(x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]92// CHECK-LABEL: define i8* @"\01?test7@@YAPAXPAUV@@@Z"(%struct.V* %x)
93// CHECK: [[CAST:%.*]] = bitcast %struct.V* %x to i8*
94// CHECK-NEXT: [[RET:%.*]] = tail call i8* @__RTCastToVoid(i8* [[CAST]])
95// CHECK-NEXT: ret i8* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]96
97void* test8(A* x) { return dynamic_cast<void*>(x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]98// CHECK-LABEL: define i8* @"\01?test8@@YAPAXPAUA@@@Z"(%struct.A* %x)
99// CHECK: [[CHECK:%.*]] = icmp eq %struct.A* %x, null
100// CHECK-NEXT: br i1 [[CHECK]]
101// CHECK: [[VOIDP:%.*]] = bitcast %struct.A* %x to i8*
102// CHECK-NEXT: [[BITCAST:%.*]] = bitcast %struct.A* %x to i8**
103// CHECK-NEXT: [[VBTBL:%.*]] = load i8** [[BITCAST]], align 4
104// CHECK-NEXT: [[VBOFFP:%.*]] = getelementptr inbounds i8* [[VBTBL]], i32 4
105// CHECK-NEXT: [[VBOFFPCAST:%.*]] = bitcast i8* [[VBOFFP]] to i32*
106// CHECK-NEXT: [[VBOFFS:%.*]] = load i32* [[VBOFFPCAST:%.*]], align 4
107// CHECK-NEXT: [[ADJ:%.*]] = getelementptr inbounds i8* [[VOIDP]], i32 [[VBOFFS]]
108// CHECK-NEXT: [[RES:%.*]] = tail call i8* @__RTCastToVoid(i8* [[ADJ]])
109// CHECK-NEXT: br label
110// CHECK: [[RET:%.*]] = phi i8*
111// CHECK-NEXT: ret i8* [[RET]]
Warren Huntb57b4b02014-06-06 22:12:37 +0000[diff] [blame]112
113void* test9(B* x) { return dynamic_cast<void*>(x); }
David Majnemer1162d252014-06-22 19:05:33 +0000[diff] [blame]114// CHECK-LABEL: define i8* @"\01?test9@@YAPAXPAUB@@@Z"(%struct.B* %x)
115// CHECK: [[CHECK:%.*]] = icmp eq %struct.B* %x, null
116// CHECK-NEXT: br i1 [[CHECK]]
117// CHECK: [[CAST:%.*]] = getelementptr inbounds %struct.B* %x, i32 0, i32 0, i32 0
118// CHECK-NEXT: [[VBPTR:%.*]] = getelementptr inbounds i8* [[CAST]], i32 4
119// CHECK-NEXT: [[BITCAST:%.*]] = bitcast i8* [[VBPTR]] to i8**
120// CHECK-NEXT: [[VBTBL:%.*]] = load i8** [[BITCAST]], align 4
121// CHECK-NEXT: [[VBOFFP:%.*]] = getelementptr inbounds i8* [[VBTBL]], i32 4
122// CHECK-NEXT: [[VBOFFPCAST:%.*]] = bitcast i8* [[VBOFFP]] to i32*
123// CHECK-NEXT: [[VBOFFS:%.*]] = load i32* [[VBOFFPCAST:%.*]], align 4
124// CHECK-NEXT: [[DELTA:%.*]] = add nsw i32 [[VBOFFS]], 4
125// CHECK-NEXT: [[ADJ:%.*]] = getelementptr inbounds i8* [[CAST]], i32 [[DELTA]]
126// CHECK-NEXT: [[CALL:%.*]] = tail call i8* @__RTCastToVoid(i8* [[ADJ]])
127// CHECK-NEXT: br label
128// CHECK: [[RET:%.*]] = phi i8*
129// CHECK-NEXT: ret i8* [[RET]]
130