forked from swiftlang/swift
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathclass_resilience_objc.swift
89 lines (68 loc) · 4.54 KB
/
class_resilience_objc.swift
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
79
80
81
82
83
84
85
86
87
88
89
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -emit-ir -o - -primary-file %s | %FileCheck %s --check-prefix=CHECK --check-prefix=CHECK-%target-ptrsize
// REQUIRES: objc_interop
// XFAIL: CPU=armv7k
// CHECK: %swift.type = type { [[INT:i32|i64]] }
import Foundation
public class FixedLayoutObjCSubclass : NSObject {
// This field could use constant direct access because NSObject has
// fixed layout, but we don't allow that right now.
public final var field: Int32 = 0
};
// CHECK-LABEL: define hidden swiftcc void @_T021class_resilience_objc29testConstantDirectFieldAccessyAA23FixedLayoutObjCSubclassCF(%T21class_resilience_objc23FixedLayoutObjCSubclassC*)
// CHECK: [[OFFSET:%.*]] = load [[INT]], [[INT]]* @_T021class_resilience_objc23FixedLayoutObjCSubclassC5fields5Int32VvWvd
// CHECK-NEXT: [[OBJECT:%.*]] = bitcast %T21class_resilience_objc23FixedLayoutObjCSubclassC* %0 to i8*
// CHECK-NEXT: [[ADDR:%.*]] = getelementptr inbounds i8, i8* [[OBJECT]], [[INT]] [[OFFSET]]
// CHECK-NEXT: [[FIELD_ADDR:%.*]] = bitcast i8* [[ADDR]] to %Ts5Int32V*
// CHECK-NEXT: [[PAYLOAD_ADDR:%.*]] = getelementptr inbounds %Ts5Int32V, %Ts5Int32V* [[FIELD_ADDR]], i32 0, i32 0
// CHECK-NEXT: store i32 10, i32* [[PAYLOAD_ADDR]]
func testConstantDirectFieldAccess(_ o: FixedLayoutObjCSubclass) {
o.field = 10
}
public class NonFixedLayoutObjCSubclass : NSCoder {
// This field uses non-constant direct access because NSCoder has resilient
// layout.
public final var field: Int32 = 0
}
// CHECK-LABEL: define hidden swiftcc void @_T021class_resilience_objc32testNonConstantDirectFieldAccessyAA0E23FixedLayoutObjCSubclassCF(%T21class_resilience_objc26NonFixedLayoutObjCSubclassC*)
// CHECK: [[OFFSET:%.*]] = load [[INT]], [[INT]]* @_T021class_resilience_objc26NonFixedLayoutObjCSubclassC5fields5Int32VvWvd
// CHECK-NEXT: [[OBJECT:%.*]] = bitcast %T21class_resilience_objc26NonFixedLayoutObjCSubclassC* %0 to i8*
// CHECK-NEXT: [[ADDR:%.*]] = getelementptr inbounds i8, i8* [[OBJECT]], [[INT]] [[OFFSET]]
// CHECK-NEXT: [[FIELD_ADDR:%.*]] = bitcast i8* [[ADDR]] to %Ts5Int32V*
// CHECK-NEXT: [[PAYLOAD_ADDR:%.*]] = getelementptr inbounds %Ts5Int32V, %Ts5Int32V* [[FIELD_ADDR]], i32 0, i32 0
// CHECK-NEXT: store i32 10, i32* [[PAYLOAD_ADDR]]
func testNonConstantDirectFieldAccess(_ o: NonFixedLayoutObjCSubclass) {
o.field = 10
}
public class GenericObjCSubclass<T> : NSCoder {
public final var content: T
public final var field: Int32 = 0
public init(content: T) {
self.content = content
}
}
// CHECK-LABEL: define hidden swiftcc void @_T021class_resilience_objc31testConstantIndirectFieldAccessyAA19GenericObjCSubclassCyxGlF(%T21class_resilience_objc19GenericObjCSubclassC*)
// FIXME: we could eliminate the unnecessary isa load by lazily emitting
// metadata sources in EmitPolymorphicParameters
// CHECK: bitcast %T21class_resilience_objc19GenericObjCSubclassC* %0
// CHECK-32: [[ADDR:%.*]] = bitcast %T21class_resilience_objc19GenericObjCSubclassC* %0 to %swift.type**
// CHECK-32-NEXT: [[ISA:%.*]] = load %swift.type*, %swift.type** [[ADDR]]
// CHECK-64: [[ADDR:%.*]] = bitcast %T21class_resilience_objc19GenericObjCSubclassC* %0 to [[INT]]*
// CHECK-64-NEXT: [[ISA:%.*]] = load [[INT]], [[INT]]* [[ADDR]]
// CHECK-64-NEXT: [[ISA_MASK:%.*]] = load [[INT]], [[INT]]* @swift_isaMask
// CHECK-64-NEXT: [[ISA_VALUE:%.*]] = and [[INT]] [[ISA]], [[ISA_MASK]]
// CHECK-64-NEXT: [[ISA:%.*]] = inttoptr [[INT]] [[ISA_VALUE]] to %swift.type*
// CHECK-NEXT: [[ISA_ADDR:%.*]] = bitcast %swift.type* [[ISA]] to [[INT]]*
// CHECK-32-NEXT: [[FIELD_OFFSET_ADDR:%.*]] = getelementptr inbounds [[INT]], [[INT]]* [[ISA_ADDR]], [[INT]] 16
// CHECK-64-NEXT: [[FIELD_OFFSET_ADDR:%.*]] = getelementptr inbounds [[INT]], [[INT]]* [[ISA_ADDR]], [[INT]] 13
// CHECK-NEXT: [[FIELD_OFFSET:%.*]] = load [[INT]], [[INT]]* [[FIELD_OFFSET_ADDR:%.*]]
// CHECK-NEXT: [[OBJECT:%.*]] = bitcast %T21class_resilience_objc19GenericObjCSubclassC* %0 to i8*
// CHECK-NEXT: [[ADDR:%.*]] = getelementptr inbounds i8, i8* [[OBJECT]], [[INT]] [[FIELD_OFFSET]]
// CHECK-NEXT: [[FIELD_ADDR:%.*]] = bitcast i8* [[ADDR]] to %Ts5Int32V*
// CHECK-NEXT: [[PAYLOAD_ADDR:%.*]] = getelementptr inbounds %Ts5Int32V, %Ts5Int32V* [[FIELD_ADDR]], i32 0, i32 0
// CHECK-NEXT: store i32 10, i32* [[PAYLOAD_ADDR]]
func testConstantIndirectFieldAccess<T>(_ o: GenericObjCSubclass<T>) {
// This field uses constant indirect access because NSCoder has resilient
// layout. Non-constant indirect is never needed for Objective-C classes
// because the field offset vector only contains Swift field offsets.
o.field = 10
}