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187770dc74
private symbols in the __DATA segment internal. This prevents the linker from removing the symbol names. Keeping the symbols visible enables tools to collect various information about the symbols, for example, tools that discover whether or not a symbol gets dirtied. rdar://problem/48887111 Differential Revision: https://reviews.llvm.org/D61454 llvm-svn: 360359
122 lines
3.1 KiB
Objective-C
122 lines
3.1 KiB
Objective-C
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s | FileCheck %s
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// CHECK: @"OBJC_IVAR_$_I3._iv2" = global i64 8, section "__DATA, __objc_ivar", align 8
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// CHECK: @"OBJC_IVAR_$_I3._iv3" = global i64 12, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I3" = internal global {{.*}} { i32 0, i32 8, i32 13
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// CHECK: @"OBJC_IVAR_$_I4._iv4" = global i64 13, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I4" = internal global {{.*}} { i32 0, i32 13, i32 14, {{.*}}
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// CHECK: @"OBJC_IVAR_$_I5._iv6_synth" = hidden global i64 16, section "__DATA, __objc_ivar", align 8
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// CHECK: @"OBJC_IVAR_$_I5._iv7_synth" = hidden global i64 20, section "__DATA, __objc_ivar", align 8
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// CHECK: @"OBJC_IVAR_$_I5._iv5" = global i64 14, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I5" = internal global {{.*}} { i32 0, i32 14, i32 24, {{.*}}
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// CHECK: @"OBJC_IVAR_$_I6.iv0" = global i64 0, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I6" = internal global {{.*}} { i32 2, i32 0, i32 1, {{.*}}
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// CHECK: @"OBJC_IVAR_$_I8.b" = global i64 8, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I8" = internal global {{.*}} { i32 0, i32 8, i32 16, {{.*}}
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// CHECK: @"OBJC_IVAR_$_I9.iv0" = global i64 0, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I9" = internal global {{.*}} { i32 2, i32 0, i32 4, {{.*}}
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// CHECK: @"OBJC_IVAR_$_I10.iv1" = global i64 4, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I10" = internal global {{.*}} { i32 0, i32 4, i32 5, {{.*}}
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// CHECK: _OBJC_CLASS_RO_$_I11" = internal global {{.*}} { i32 0, i32 5, i32 5, {{.*}}
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// CHECK: @"OBJC_IVAR_$_I12.iv2" = global i64 8, section "__DATA, __objc_ivar", align 8
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// CHECK: _OBJC_CLASS_RO_$_I12" = internal global {{.*}} { i32 0, i32 8, i32 12, {{.*}}
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/*
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Compare to:
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gcc -m64 -S -o - interface-layout-64.m | grep '^_OBJC_IVAR_$_*{{.*}}' -A 1
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and
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gcc -m64 -S -o - interface-layout-64.m | grep '^l{{.*}}_CLASS_RO_$_I[0-9]*' -A 3
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*/
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struct s0 {
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double x;
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};
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@interface I2 {
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struct s0 _iv1;
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}
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@end
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@interface I3 : I2 {
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unsigned int _iv2 :1;
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unsigned : 0;
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unsigned int _iv3 : 3;
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}
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@end
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@interface I4 : I3 {
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char _iv4;
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}
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@end
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@interface I5 : I4 {
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char _iv5;
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}
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@property int prop0;
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@end
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@implementation I3
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@end
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@implementation I4
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@end
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@interface I5 ()
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@property int prop1;
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@property char prop2;
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@end
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@implementation I5
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@synthesize prop0 = _iv6_synth;
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@synthesize prop1 = _iv7_synth;
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@synthesize prop2 = _iv5;
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@end
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// The size rounds up to the next available byte.
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@interface I6 {
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unsigned iv0 : 2;
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}
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@end
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@implementation I6
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@end
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// The start of the subclass includes padding for its own alignment.
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@interface I7 {
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char a;
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}
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@end
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@interface I8 : I7 {
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double b;
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}
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@end
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@implementation I8
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@end
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// Padding bit-fields
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@interface I9 {
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unsigned iv0 : 2;
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unsigned : 0;
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}
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@end
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@implementation I9
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@end
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@interface I10 : I9 {
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unsigned iv1 : 2;
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}
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@end
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@implementation I10
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@end
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// Empty structures
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@interface I11 : I10
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@end
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@implementation I11
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@end
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@interface I12 : I11 {
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unsigned iv2;
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}
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@end
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@implementation I12
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@end
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