|  | // REQUIRES: x86-registered-target,x86-64-registered-target | 
|  | // RUN: %clang_cc1 -fblocks -fobjc-gc -triple x86_64-apple-darwin -fobjc-fragile-abi -S %s -o %t-64.s | 
|  | // RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s | 
|  | // RUN: %clang_cc1 -fblocks -fobjc-gc -triple i386-apple-darwin -fobjc-fragile-abi -S %s -o %t-32.s | 
|  | // RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s | 
|  |  | 
|  | @interface NSObject | 
|  | - copy; | 
|  | @end | 
|  |  | 
|  | int main() { | 
|  | NSObject *object = 0; | 
|  | __weak __block NSObject* weak_object = object; | 
|  | void (^callback) (void) = [^{ | 
|  | if (weak_object) | 
|  | [weak_object copy]; | 
|  | } copy]; | 
|  | callback(); | 
|  | return 0; | 
|  | } | 
|  |  | 
|  | // CHECK-LP64: callq    _objc_read_weak | 
|  | // CHECK-LP64: callq    _objc_read_weak | 
|  |  | 
|  | // CHECK-LP32: calll     L_objc_read_weak | 
|  | // CHECK-LP32: calll     L_objc_read_weak |