1 files changed, 50 insertions, 0 deletions
diff --git a/test/CodeGenCXX/no-opt-volatile-memcpy.cpp b/test/CodeGenCXX/no-opt-volatile-memcpy.cpp
new file mode 100644
index 0000000..e542e4a
--- /dev/null
+++ b/test/CodeGenCXX/no-opt-volatile-memcpy.cpp
@@ -0,0 +1,50 @@
+// RUN: %clang_cc1 -O0 -triple=x86_64-apple-darwin  -emit-llvm -o - %s | FileCheck %s
+// rdar://11861085
+
+struct s {
+  char filler [128];
+  volatile int x;
+};
+
+struct s gs;
+
+void foo (void) {
+  struct s ls;
+  ls = ls;
+  gs = gs;
+  ls = gs;
+}
+// CHECK: define void @_Z3foov()
+// CHECK: %[[LS:.*]] = alloca %struct.s, align 4
+// CHECK-NEXT: %[[ZERO:.*]] = bitcast %struct.s* %[[LS]] to i8*
+// CHECK-NEXT:  %[[ONE:.*]] = bitcast %struct.s* %[[LS]] to i8*
+// CHECK-NEXT:  call void @llvm.memcpy.{{.*}}(i8* %[[ZERO]], i8* %[[ONE]], i64 132, i32 4, i1 true)
+// CHECK-NEXT:  call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
+// CHECK-NEXT:  %[[TWO:.*]] = bitcast %struct.s* %[[LS]] to i8*
+// CHECK-NEXT:  call void @llvm.memcpy.{{.*}}(i8* %[[TWO]], i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
+
+
+struct s1 {
+  struct s y;
+};
+
+struct s1 s;
+
+void fee (void) {
+  s = s;
+  s.y = gs;
+}
+// CHECK: define void @_Z3feev()
+// CHECK: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
+// CHECK-NEXT: call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.s1* @s, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.s* @gs, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)
+
+struct d : s1 {
+};
+
+d gd;
+
+void gorf(void) {
+  gd = gd;
+}
+// CHECK: define void @_Z4gorfv()
+// CHECK:   call void @llvm.memcpy.{{.*}}(i8* getelementptr inbounds (%struct.d* @gd, i32 0, i32 0, i32 0, i32 0, i32 0), i8* getelementptr inbounds (%struct.d* @gd, i32 0, i32 0, i32 0, i32 0, i32 0), i64 132, i32 4, i1 true)