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| author | Fariborz Jahanian <fjahanian@apple.com> | 2009-10-10 20:07:56 +0000 |
|---|---|---|
| committer | Fariborz Jahanian <fjahanian@apple.com> | 2009-10-10 20:07:56 +0000 |
| commit | 07ca72725a049f9e070c36bc8b887061d60402f7 (patch) | |
| tree | e8d18bdf0ab191f67211de65e2a62e71a8c12a92 /clang/test/CodeGenObjC | |
| parent | b93f40fd72c84e4d8f3d19d5f495d5ae4a4274cc (diff) | |
| download | bcm5719-llvm-07ca72725a049f9e070c36bc8b887061d60402f7.tar.gz bcm5719-llvm-07ca72725a049f9e070c36bc8b887061d60402f7.zip | |
Generate weak read barriers when reading a weak __block
variable inside the block.
llvm-svn: 83729
Diffstat (limited to 'clang/test/CodeGenObjC')
| -rw-r--r-- | clang/test/CodeGenObjC/objc-read-weak-byref.m | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/clang/test/CodeGenObjC/objc-read-weak-byref.m b/clang/test/CodeGenObjC/objc-read-weak-byref.m new file mode 100644 index 00000000000..7c297be5667 --- /dev/null +++ b/clang/test/CodeGenObjC/objc-read-weak-byref.m @@ -0,0 +1,26 @@ +// RUN: clang-cc -fblocks -fobjc-gc -triple x86_64-apple-darwin -S %s -o %t-64.s && +// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s && +// RUN: clang-cc -fblocks -fobjc-gc -triple i386-apple-darwin -S %s -o %t-32.s && +// RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s && +// RUN: true + +@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: call _objc_read_weak +// CHECK-LP64: call _objc_read_weak + +// CHECK-LP32: call L_objc_read_weak +// CHECK-LP32: call L_objc_read_weak |
