1 files changed, 21 insertions, 0 deletions
diff --git a/test/CodeGenCXX/assign-operator.cpp b/test/CodeGenCXX/assign-operator.cpp
index e19df272c9..00058a2ed5 100644
--- a/test/CodeGenCXX/assign-operator.cpp
+++ b/test/CodeGenCXX/assign-operator.cpp
@@ -28,3 +28,24 @@ namespace test1 {
 
   A<int> a;
 }
+
+// PR12204
+namespace test2 {
+  struct A {
+    A() {} // make this non-POD to enable tail layout
+    void *ptr;
+    char c;
+  };
+
+  void test(A &out) {
+    out = A();
+  }
+}
+// CHECK:    define void @_ZN5test24testERNS_1AE(
+// CHECK:      [[OUT:%.*]] = alloca [[A:%.*]]*, align 8
+// CHECK-NEXT: [[TMP:%.*]] = alloca [[A]], align 8
+// CHECK:      [[REF:%.*]] = load [[A]]** [[OUT]], align 8
+// CHECK-NEXT: call void @_ZN5test21AC1Ev([[A]]* [[TMP]])
+// CHECK-NEXT: [[T0:%.*]] = bitcast [[A]]* [[REF]] to i8*
+// CHECK-NEXT: [[T1:%.*]] = bitcast [[A]]* [[TMP]] to i8*
+// CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[T0]], i8* [[T1]], i64 9, i32 8, i1 false)