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      1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fobjc-nonfragile-abi -emit-llvm -o %t %s
      2 // RUNX: llvm-gcc -m64 -emit-llvm -S -o %t %s &&
      3 
      4 // RUN: grep '@"OBJC_IVAR_$_I3._iv2" = global i64 8, section "__DATA, __objc_ivar", align 8' %t
      5 // RUN: grep '@"OBJC_IVAR_$_I3._iv3" = global i64 12, section "__DATA, __objc_ivar", align 8' %t
      6 // RUN: grep '@"OBJC_IVAR_$_I4._iv4" = global i64 13, section "__DATA, __objc_ivar", align 8' %t
      7 // RUN: grep '@"OBJC_IVAR_$_I5._iv5" = global i64 14, section "__DATA, __objc_ivar", align 8' %t
      8 // RUN: grep '@"OBJC_IVAR_$_I5._iv6_synth" = hidden global i64 16, section "__DATA, __objc_ivar", align 8' %t
      9 // RUN: grep '@"OBJC_IVAR_$_I5._iv7_synth" = hidden global i64 20, section "__DATA, __objc_ivar", align 8' %t
     10 // RUN: grep '@"OBJC_IVAR_$_I6.iv0" = global i64 0, section "__DATA, __objc_ivar", align 8' %t
     11 // RUN: grep '@"OBJC_IVAR_$_I8.b" = global i64 8, section "__DATA, __objc_ivar", align 8' %t
     12 // RUN: grep '@"OBJC_IVAR_$_I9.iv0" = global i64 0, section "__DATA, __objc_ivar", align 8' %t
     13 // RUN: grep '@"OBJC_IVAR_$_I10.iv1" = global i64 4, section "__DATA, __objc_ivar", align 8' %t
     14 // RUN: grep '@"OBJC_IVAR_$_I12.iv2" = global i64 8, section "__DATA, __objc_ivar", align 8' %t
     15 // RUN: grep '_OBJC_CLASS_RO_$_I3" = internal global .* { i32 0, i32 8, i32 13, .*' %t
     16 // RUN: grep '_OBJC_CLASS_RO_$_I4" = internal global .* { i32 0, i32 13, i32 14, .*' %t
     17 // RUN: grep '_OBJC_CLASS_RO_$_I5" = internal global .* { i32 0, i32 14, i32 24, .*' %t
     18 // RUN: grep '_OBJC_CLASS_RO_$_I6" = internal global .* { i32 2, i32 0, i32 1, .*' %t
     19 // RUN: grep '_OBJC_CLASS_RO_$_I8" = internal global .* { i32 0, i32 8, i32 16, .*' %t
     20 // RUN: grep '_OBJC_CLASS_RO_$_I9" = internal global .* { i32 2, i32 0, i32 4, .*' %t
     21 // RUN: grep '_OBJC_CLASS_RO_$_I10" = internal global .* { i32 0, i32 4, i32 5, .*' %t
     22 // RUN: grep '_OBJC_CLASS_RO_$_I11" = internal global .* { i32 0, i32 5, i32 5, .*' %t
     23 // RUN: grep '_OBJC_CLASS_RO_$_I12" = internal global .* { i32 0, i32 8, i32 12, .*' %t
     24 
     25 
     26 /*
     27   Compare to:
     28     gcc -m64 -S -o - interface-layout-64.m | grep '^_OBJC_IVAR_$_*.*' -A 1
     29   and 
     30     gcc -m64 -S -o - interface-layout-64.m | grep '^l.*_CLASS_RO_$_I[0-9]*' -A 3
     31  */
     32 
     33 struct s0 {
     34   double x;
     35 };
     36 
     37 @interface I2 {
     38   struct s0 _iv1;
     39 }
     40 @end
     41 
     42 @interface I3 : I2 {
     43   unsigned int _iv2 :1;
     44   unsigned : 0;
     45   unsigned int _iv3 : 3;
     46 }
     47 @end
     48 
     49 @interface I4 : I3 {
     50  char _iv4;
     51 }
     52 @end
     53 
     54 @interface I5 : I4 {
     55  char _iv5;
     56 }
     57 
     58 @property int prop0;
     59 @end
     60 
     61 @implementation I3
     62 @end
     63 
     64 @implementation I4 
     65 @end
     66 
     67 @interface I5 ()
     68 @property int prop1;
     69 @property char prop2;
     70 @end
     71 
     72 @implementation I5
     73 @synthesize prop0 = _iv6_synth;
     74 @synthesize prop1 = _iv7_synth;
     75 @synthesize prop2 = _iv5;
     76 @end
     77 
     78 // The size rounds up to the next available byte.
     79 @interface I6 {
     80   unsigned iv0 : 2;
     81 }
     82 @end
     83 @implementation I6
     84 @end
     85 
     86 // The start of the subclass includes padding for its own alignment.
     87 @interface I7 {
     88   char a;
     89 }
     90 @end
     91 @interface I8 : I7 {
     92   double b;
     93 }
     94 @end
     95 @implementation I8
     96 @end
     97 
     98 // Padding bit-fields
     99 @interface I9 {
    100   unsigned iv0 : 2;
    101   unsigned : 0;
    102 }
    103 @end
    104 @implementation I9
    105 @end
    106 @interface I10 : I9 {
    107   unsigned iv1 : 2;
    108 }
    109 @end
    110 @implementation I10
    111 @end
    112 
    113 // Empty structures
    114 @interface I11 : I10
    115 @end
    116 @implementation I11
    117 @end
    118 @interface I12 : I11 {
    119   unsigned iv2;
    120 }
    121 @end
    122 @implementation I12
    123 @end
    124