Correctly handle type mismatches in the __weak copy/move-initialization
peephole I added in r250916.
rdar://23559789
llvm-svn: 253255
diff --git a/clang/test/CodeGenObjC/arc-weak.m b/clang/test/CodeGenObjC/arc-weak.m
new file mode 100644
index 0000000..59f8d1d
--- /dev/null
+++ b/clang/test/CodeGenObjC/arc-weak.m
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fblocks -fobjc-arc -fobjc-runtime-has-weak -o - %s | FileCheck %s
+
+__attribute((objc_root_class)) @interface A @end
+@interface B : A @end
+
+// rdar://problem/23559789
+// Ensure that type differences don't cause an assert here.
+void test0(__weak B **src) {
+ __weak A *dest = *src;
+}
+// CHECK-LABEL: define void @test0
+// CHECK: [[SRC:%.*]] = alloca [[B:%.*]]**, align 8
+// CHECK: [[DEST:%.*]] = alloca [[A:%.*]]*, align 8
+// CHECK: [[T0:%.*]] = load [[B]]**, [[B]]*** [[SRC]], align 8
+// CHECK-NEXT: [[T1:%.*]] = bitcast [[B]]** [[T0]] to [[A]]**
+// CHECK-NEXT: [[T2:%.*]] = bitcast [[A]]** [[DEST]] to i8**
+// CHECK-NEXT: [[T3:%.*]] = bitcast [[A]]** [[T1]] to i8**
+// CHECK-NEXT: call void @objc_copyWeak(i8** [[T2]], i8** [[T3]])
+// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]** [[DEST]] to i8**
+// CHECK: call void @objc_destroyWeak(i8** [[T0]])