File: arc-ivar-layout.m

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (77 lines) | stat: -rw-r--r-- 1,490 bytes parent folder | download | duplicates (11)
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
// RUN: %clang_cc1 -fobjc-arc -fobjc-runtime-has-weak -triple x86_64-apple-darwin -print-ivar-layout -emit-llvm %s -o %t-64.s | FileCheck -check-prefix CHECK-LP64 %s

@interface NSObject {
  id isa;
}
@end

@interface AllPointers : NSObject {
    id foo;
    id __strong bar;    
    NSObject *bletch;
}
@end

@implementation AllPointers
@end
// CHECK-LP64: strong ivar layout for class 'AllPointers': 0x03, 0x00

@class NSString, NSNumber;
@interface A : NSObject {
   NSString *foo;
   NSNumber *bar;
   unsigned int bletch;
   __weak id delegate;
}
@end

@interface B : A {
  unsigned int x;
  NSString *y;
  NSString *z;
}
@end

@implementation A @end

// CHECK-LP64: strong ivar layout for class 'A': 0x02, 0x00
// CHECK-LP64: weak ivar layout for class 'A': 0x31, 0x00

@implementation B @end

// CHECK-LP64: strong ivar layout for class 'B': 0x12, 0x00

@interface UnsafePerson {
@public
    __unsafe_unretained id name;
    __unsafe_unretained id age;
    id value;
}
@end

@implementation UnsafePerson @end

// CHECK-LP64: strong ivar layout for class 'UnsafePerson': 0x21, 0x00

@interface rdar16136439
    @property (nonatomic, readonly, weak) id first;
@end

@implementation rdar16136439 @end

// CHECK-LP64: weak ivar layout for class 'rdar16136439': 0x01, 0x00

@interface Misalign : NSObject {
  char a;
}
@end

@interface Misaligned : Misalign {
  char b;
  id x;
}
@end

@implementation Misaligned @end

// CHECK-LP64: strong ivar layout for class 'Misaligned': 0x01, 0x00