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-rw-r--r--clang/test/CodeGenObjC/blocks.m13
1 files changed, 13 insertions, 0 deletions
diff --git a/clang/test/CodeGenObjC/blocks.m b/clang/test/CodeGenObjC/blocks.m
index 06dc908f2ba..151c1623421 100644
--- a/clang/test/CodeGenObjC/blocks.m
+++ b/clang/test/CodeGenObjC/blocks.m
@@ -87,3 +87,16 @@ void test2(Test2 *x) {
__weak __block Test2 *weakX = x;
test2_helper(^{ [weakX destroy]; });
}
+
+// rdar://problem/9124263
+// In the test above, check that the use in the invocation function
+// doesn't require a read barrier.
+// CHECK: define internal void @__test2_block_invoke_
+// CHECK: [[BLOCK:%.*]] = bitcast i8* {{%.*}} to [[BLOCK_T]]*
+// CHECK-NEXT: [[T0:%.*]] = getelementptr inbounds [[BLOCK_T]]* [[BLOCK]], i32 0, i32 5
+// CHECK-NEXT: [[T1:%.*]] = load i8** [[T0]]
+// CHECK-NEXT: [[T2:%.*]] = bitcast i8* [[T1]] to [[WEAK_T]]*
+// CHECK-NEXT: [[T3:%.*]] = getelementptr inbounds [[WEAK_T]]* [[T2]], i32 0, i32 1
+// CHECK-NEXT: [[T4:%.*]] = load [[WEAK_T]]** [[T3]]
+// CHECK-NEXT: [[WEAKX:%.*]] = getelementptr inbounds [[WEAK_T]]* [[T4]], i32 0, i32 6
+// CHECK-NEXT: [[T0:%.*]] = load [[TEST2]]** [[WEAKX]], align 4
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