6720465c47
Only NSObject we can trust the layout of won't change even though we cannot directly see its @implementation
216 lines
6.8 KiB
Objective-C
216 lines
6.8 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-macosx10.14.0 -emit-llvm %s -o - | FileCheck %s
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// CHECK: @"OBJC_IVAR_$_StaticLayout.static_layout_ivar" = hidden constant i64 20
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// CHECK: @"OBJC_IVAR_$_SuperClass.superClassIvar" = hidden constant i64 20
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// CHECK: @"OBJC_IVAR_$_SuperClass._superClassProperty" = hidden constant i64 24
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// CHECK: @"OBJC_IVAR_$_IntermediateClass.intermediateClassIvar" = constant i64 32
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// CHECK: @"OBJC_IVAR_$_IntermediateClass.intermediateClassIvar2" = constant i64 40
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// CHECK: @"OBJC_IVAR_$_IntermediateClass._intermediateProperty" = hidden constant i64 48
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// CHECK: @"OBJC_IVAR_$_SubClass.subClassIvar" = constant i64 56
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// CHECK: @"OBJC_IVAR_$_SubClass._subClassProperty" = hidden constant i64 64
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// CHECK: @"OBJC_IVAR_$_RootClass.these" = constant i64 0
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// CHECK: @"OBJC_IVAR_$_RootClass.never" = constant i64 4
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// CHECK: @"OBJC_IVAR_$_RootClass.change" = constant i64 8
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// CHECK: @"OBJC_IVAR_$_StillStaticLayout.static_layout_ivar" = hidden constant i64 12
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// CHECK: @"OBJC_IVAR_$_NotStaticLayout.not_static_layout_ivar" = hidden global i64 12
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// CHECK: @"OBJC_IVAR_$_SuperClass2._superClassProperty2" = hidden constant i64 20
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// CHECK: @"OBJC_IVAR_$_IntermediateClass2._IntermediateClass2Property" = hidden constant i64 24
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// CHECK: @"OBJC_IVAR_$_SubClass2._subClass2Property" = hidden constant i64 28
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@interface NSObject {
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int these, will, never, change, ever;
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}
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@end
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@interface StaticLayout : NSObject
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@end
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@implementation StaticLayout {
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int static_layout_ivar;
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}
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// CHECK-LABEL: define internal void @"\01-[StaticLayout meth]"
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-(void)meth {
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static_layout_ivar = 0;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_StaticLayout
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// CHECK: getelementptr inbounds i8, ptr %0, i64 20
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}
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@end
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@interface SuperClass : NSObject
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@property (nonatomic, assign) int superClassProperty;
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@end
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@implementation SuperClass {
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int superClassIvar; // Declare an ivar
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}
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// CHECK-LABEL: define internal void @"\01-[SuperClass superClassMethod]"
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- (void)superClassMethod {
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_superClassProperty = 42;
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superClassIvar = 10;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_SuperClass
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// CHECK: getelementptr inbounds i8, ptr %1, i64 20
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}
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// Implicitly synthesized method here
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// CHECK-LABEL: define internal i32 @"\01-[SuperClass superClassProperty]"
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// CHECK: getelementptr inbounds i8, ptr %0, i64 24
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// CHECK-LABEL: define internal void @"\01-[SuperClass setSuperClassProperty:]"
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// CHECK: getelementptr inbounds i8, ptr %1, i64 24
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@end
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@interface IntermediateClass : SuperClass {
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double intermediateClassIvar;
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@protected
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int intermediateClassIvar2;
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}
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@property (nonatomic, strong) SuperClass *intermediateProperty;
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@end
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@implementation IntermediateClass
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@synthesize intermediateProperty = _intermediateProperty;
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// CHECK-LABEL: define internal void @"\01-[IntermediateClass intermediateClassMethod]"
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- (void)intermediateClassMethod {
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intermediateClassIvar = 3.14;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_IntermediateClass
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// CHECK: getelementptr inbounds i8, ptr %0, i64 32
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}
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// CHECK-LABEL: define internal void @"\01-[IntermediateClass intermediateClassPropertyMethod]"
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- (void)intermediateClassPropertyMethod {
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self.intermediateProperty = 0;
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// CHECK: load ptr, ptr @OBJC_SELECTOR_REFERENCES_
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// CHECK: call void @objc_msgSend(ptr noundef %0, ptr noundef %1, ptr noundef null)
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}
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// CHECK-LABEL: define internal void @"\01-[IntermediateClass intermediateClassPropertyMethodDirect]"
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- (void)intermediateClassPropertyMethodDirect {
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_intermediateProperty = 0;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_IntermediateClass._intermediateProperty"
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// CHECK: getelementptr inbounds i8, ptr %0, i64 48
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}
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@end
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@interface SubClass : IntermediateClass {
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double subClassIvar;
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}
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@property (nonatomic, assign) SubClass *subClassProperty;
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@end
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@implementation SubClass
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// CHECK-LABEL: define internal void @"\01-[SubClass subclassVar]"
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- (void)subclassVar {
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subClassIvar = 6.28;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_SubClass
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// CHECK: getelementptr inbounds i8, ptr %0, i64 56
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}
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// CHECK-LABEL: define internal void @"\01-[SubClass intermediateSubclassVar]"
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-(void)intermediateSubclassVar {
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intermediateClassIvar = 3.14;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_IntermediateClass
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// CHECK: getelementptr inbounds i8, ptr %0, i64 32
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}
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// Implicit synthesized method here:
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// CHECK-LABEL: define internal ptr @"\01-[SubClass subClassProperty]"
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_SubClass._subClassProperty"
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// CHECK: getelementptr inbounds i8, ptr %0, i64 64
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// CHECK-LABEL: define internal void @"\01-[SubClass setSubClassProperty:]"
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$_SubClass._subClassProperty"
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// CHECK: getelementptr inbounds i8, ptr %1, i64 64
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@end
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__attribute((objc_root_class)) @interface RootClass {
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int these, never, change;
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}
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@end
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@implementation RootClass
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@end
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@interface StillStaticLayout : RootClass
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@end
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@implementation StillStaticLayout {
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int static_layout_ivar;
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}
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// CHECK-LABEL: define internal void @"\01-[StillStaticLayout meth]"
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-(void)meth {
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static_layout_ivar = 0;
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// CHECK-NOT: load i64, ptr @"OBJC_IVAR_$StillStaticLayout.static_layout_ivar
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}
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@end
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@interface NotNSObject
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@end
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@interface NotStaticLayout : NotNSObject {
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int these, might, change;
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}
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@end
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@implementation NotStaticLayout {
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int not_static_layout_ivar;
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}
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// CHECK-LABEL: define internal void @"\01-[NotStaticLayout meth]"
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-(void)meth {
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not_static_layout_ivar = 0;
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// CHECK: load i64, ptr @"OBJC_IVAR_$_NotStaticLayout.not_static_layout_ivar
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}
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@end
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// CHECK: define internal i32 @"\01-[IntermediateClass2 IntermediateClass2Property]"(ptr noundef %[[SELF:.*]],
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// CHECK: %[[SELF_ADDR:.*]] = alloca ptr, align 8
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// CHECK: store ptr %[[SELF]], ptr %[[SELF_ADDR]], align 8
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// CHECK: %[[V0:.*]] = load ptr, ptr %[[SELF_ADDR]], align 8
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// CHECK: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[V0]], i64 24
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// CHECK: %[[LOAD:.*]] = load atomic i32, ptr %[[ADD_PTR]] unordered, align 4
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// CHECK: ret i32 %[[LOAD]]
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// CHECK: define internal i32 @"\01-[SubClass2 subClass2Property]"(ptr noundef %[[SELF:.*]],
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// CHECK: %[[SELF_ADDR:.*]] = alloca ptr, align 8
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// CHECK: store ptr %[[SELF]], ptr %[[SELF_ADDR]], align 8
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// CHECK: %[[V0:.*]] = load ptr, ptr %[[SELF_ADDR]], align 8
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// CHECK: %[[ADD_PTR:.*]] = getelementptr inbounds i8, ptr %[[V0]], i64 28
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// CHECK: %[[LOAD:.*]] = load atomic i32, ptr %[[ADD_PTR]] unordered, align 4
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// CHECK: ret i32 %[[LOAD]]
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@interface SuperClass2 : NSObject
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@property int superClassProperty2;
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@end
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@interface IntermediateClass2 : SuperClass2
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@property int IntermediateClass2Property;
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@end
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@interface IntermediateClass3 : SuperClass2
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@property int IntermediateClass3Property;
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@end
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@interface SubClass2 : IntermediateClass2
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@property int subClass2Property;
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@end
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@implementation IntermediateClass3
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@end
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@implementation SuperClass2
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@end
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@implementation IntermediateClass2
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@end
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@implementation SubClass2
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@end
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