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      1 // RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -triple x86_64-apple-darwin -print-ivar-layout -emit-llvm -o /dev/null %s > %t-64.layout
      2 // RUN: FileCheck -check-prefix=CHECK -check-prefix=CHECK-64 --input-file=%t-64.layout %s
      3 // RUN: %clang_cc1 -fblocks -fobjc-arc -fobjc-runtime-has-weak -triple i386-apple-darwin -print-ivar-layout -emit-llvm -o /dev/null  %s > %t-32.layout
      4 // RUN: FileCheck -check-prefix=CHECK -check-prefix=CHECK-32 --input-file=%t-32.layout %s
      5 // rdar://12184410
      6 
      7 void x(id y) {}
      8 void y(int a) {}
      9 
     10 extern id opaque_id();
     11 
     12 void f() {
     13     __block int byref_int = 0;
     14     const id bar = (id) opaque_id();
     15     id baz = 0;
     16     __strong id strong_void_sta;
     17     __block id byref_bab = (id)0;
     18     __block id bl_var1;
     19 
     20 // CHECK: Inline block variable layout: 0x0100, BL_STRONG:1, BL_OPERATOR:0
     21     void (^b)() = ^{
     22         x(bar);
     23     };    
     24 
     25 // CHECK: Inline block variable layout: 0x0210, BL_STRONG:2, BL_BYREF:1, BL_OPERATOR:0
     26     void (^c)() = ^{
     27         x(bar);
     28         x(baz);
     29         byref_int = 1;
     30     };    
     31 
     32 // CHECK: Inline block variable layout: 0x0230, BL_STRONG:2, BL_BYREF:3, BL_OPERATOR:0
     33     void (^d)() = ^{
     34         x(bar);
     35         x(baz);
     36         byref_int = 1;
     37         bl_var1 = 0;
     38         byref_bab = 0;
     39     };
     40 
     41 // CHECK: Inline block variable layout: 0x0231, BL_STRONG:2, BL_BYREF:3, BL_WEAK:1, BL_OPERATOR:0
     42     __weak id wid;
     43     id (^e)() = ^{
     44         x(bar);
     45         x(baz);
     46         byref_int = 1;
     47         bl_var1 = 0;
     48         byref_bab = 0;
     49         return wid;
     50     };
     51 
     52 // CHECK: Inline block variable layout: 0x0235, BL_STRONG:2, BL_BYREF:3, BL_WEAK:5, BL_OPERATOR:0
     53     __weak id wid1, wid2, wid3, wid4;
     54     id (^f)() = ^{
     55         x(bar);
     56         x(baz);
     57         byref_int = 1;
     58         bl_var1 = 0;
     59         byref_bab = 0;
     60         x(wid1);
     61         x(wid2);
     62         x(wid3);
     63         x(wid4);
     64         return wid;
     65     };
     66 
     67 // CHECK: Inline block variable layout: 0x035, BL_BYREF:3, BL_WEAK:5, BL_OPERATOR:0
     68     id (^g)() = ^{
     69         byref_int = 1;
     70         bl_var1 = 0;
     71         byref_bab = 0;
     72         x(wid1);
     73         x(wid2);
     74         x(wid3);
     75         x(wid4);
     76         return wid;
     77     };
     78 
     79 // CHECK: Inline block variable layout: 0x01, BL_WEAK:1, BL_OPERATOR:0
     80     id (^h)() = ^{
     81         return wid;
     82     };
     83 
     84 // CHECK: Inline block variable layout: 0x020, BL_BYREF:2, BL_OPERATOR:0
     85     void (^ii)() = ^{
     86        byref_int = 1;
     87        byref_bab = 0;
     88     };
     89 
     90 // CHECK: Inline block variable layout: 0x0102, BL_STRONG:1, BL_WEAK:2, BL_OPERATOR:0
     91     void (^jj)() = ^{
     92       x(bar);
     93       x(wid1);
     94       x(wid2);
     95     };
     96 }
     97 
     98 // rdar://12752901
     99 @class NSString;
    100 extern void NSLog(NSString *format, ...);
    101 typedef void (^dispatch_block_t)(void);
    102 int main() {
    103         __strong NSString *s1 = 0;
    104         __strong NSString *s2 = 0;
    105         __weak NSString *w1 = 0;
    106 
    107 
    108 // CHECK: Inline block variable layout: 0x0201, BL_STRONG:2, BL_WEAK:1, BL_OPERATOR:0
    109         dispatch_block_t block2 = ^{
    110                 NSLog(@"%@, %@, %@", s1, w1, s2);
    111         };
    112 }
    113