1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s 2 3 // CHECK: @"OBJC_IVAR_$_I3._iv2" = global i64 8, section "__DATA, __objc_ivar", align 8 4 // CHECK: @"OBJC_IVAR_$_I3._iv3" = global i64 12, section "__DATA, __objc_ivar", align 8 5 // CHECK: _OBJC_CLASS_RO_$_I3" = private global {{.*}} { i32 0, i32 8, i32 13 6 // CHECK: @"OBJC_IVAR_$_I4._iv4" = global i64 13, section "__DATA, __objc_ivar", align 8 7 // CHECK: _OBJC_CLASS_RO_$_I4" = private global {{.*}} { i32 0, i32 13, i32 14, {{.*}} 8 // CHECK: @"OBJC_IVAR_$_I5._iv6_synth" = hidden global i64 16, section "__DATA, __objc_ivar", align 8 9 // CHECK: @"OBJC_IVAR_$_I5._iv7_synth" = hidden global i64 20, section "__DATA, __objc_ivar", align 8 10 // CHECK: @"OBJC_IVAR_$_I5._iv5" = global i64 14, section "__DATA, __objc_ivar", align 8 11 // CHECK: _OBJC_CLASS_RO_$_I5" = private global {{.*}} { i32 0, i32 14, i32 24, {{.*}} 12 // CHECK: @"OBJC_IVAR_$_I6.iv0" = global i64 0, section "__DATA, __objc_ivar", align 8 13 // CHECK: _OBJC_CLASS_RO_$_I6" = private global {{.*}} { i32 2, i32 0, i32 1, {{.*}} 14 // CHECK: @"OBJC_IVAR_$_I8.b" = global i64 8, section "__DATA, __objc_ivar", align 8 15 // CHECK: _OBJC_CLASS_RO_$_I8" = private global {{.*}} { i32 0, i32 8, i32 16, {{.*}} 16 // CHECK: @"OBJC_IVAR_$_I9.iv0" = global i64 0, section "__DATA, __objc_ivar", align 8 17 // CHECK: _OBJC_CLASS_RO_$_I9" = private global {{.*}} { i32 2, i32 0, i32 4, {{.*}} 18 // CHECK: @"OBJC_IVAR_$_I10.iv1" = global i64 4, section "__DATA, __objc_ivar", align 8 19 // CHECK: _OBJC_CLASS_RO_$_I10" = private global {{.*}} { i32 0, i32 4, i32 5, {{.*}} 20 // CHECK: _OBJC_CLASS_RO_$_I11" = private global {{.*}} { i32 0, i32 5, i32 5, {{.*}} 21 // CHECK: @"OBJC_IVAR_$_I12.iv2" = global i64 8, section "__DATA, __objc_ivar", align 8 22 // CHECK: _OBJC_CLASS_RO_$_I12" = private global {{.*}} { i32 0, i32 8, i32 12, {{.*}} 23 24 /* 25 Compare to: 26 gcc -m64 -S -o - interface-layout-64.m | grep '^_OBJC_IVAR_$_*{{.*}}' -A 1 27 and 28 gcc -m64 -S -o - interface-layout-64.m | grep '^l{{.*}}_CLASS_RO_$_I[0-9]*' -A 3 29 */ 30 31 struct s0 { 32 double x; 33 }; 34 35 @interface I2 { 36 struct s0 _iv1; 37 } 38 @end 39 40 @interface I3 : I2 { 41 unsigned int _iv2 :1; 42 unsigned : 0; 43 unsigned int _iv3 : 3; 44 } 45 @end 46 47 @interface I4 : I3 { 48 char _iv4; 49 } 50 @end 51 52 @interface I5 : I4 { 53 char _iv5; 54 } 55 56 @property int prop0; 57 @end 58 59 @implementation I3 60 @end 61 62 @implementation I4 63 @end 64 65 @interface I5 () 66 @property int prop1; 67 @property char prop2; 68 @end 69 70 @implementation I5 71 @synthesize prop0 = _iv6_synth; 72 @synthesize prop1 = _iv7_synth; 73 @synthesize prop2 = _iv5; 74 @end 75 76 // The size rounds up to the next available byte. 77 @interface I6 { 78 unsigned iv0 : 2; 79 } 80 @end 81 @implementation I6 82 @end 83 84 // The start of the subclass includes padding for its own alignment. 85 @interface I7 { 86 char a; 87 } 88 @end 89 @interface I8 : I7 { 90 double b; 91 } 92 @end 93 @implementation I8 94 @end 95 96 // Padding bit-fields 97 @interface I9 { 98 unsigned iv0 : 2; 99 unsigned : 0; 100 } 101 @end 102 @implementation I9 103 @end 104 @interface I10 : I9 { 105 unsigned iv1 : 2; 106 } 107 @end 108 @implementation I10 109 @end 110 111 // Empty structures 112 @interface I11 : I10 113 @end 114 @implementation I11 115 @end 116 @interface I12 : I11 { 117 unsigned iv2; 118 } 119 @end 120 @implementation I12 121 @end 122
