Check in LLVM r95781.
diff --git a/test/CodeGenCXX/copy-constructor-elim.cpp b/test/CodeGenCXX/copy-constructor-elim.cpp
new file mode 100644
index 0000000..c883584
--- /dev/null
+++ b/test/CodeGenCXX/copy-constructor-elim.cpp
@@ -0,0 +1,42 @@
+// RUN: %clang_cc1 -emit-llvm -o %t %s
+// RUN: grep "_ZN1CC1ERK1C" %t | count 0
+// RUN: grep "_ZN1SC1ERK1S" %t | count 0
+
+extern "C" int printf(...);
+
+
+struct C {
+ C() : iC(6) {printf("C()\n"); }
+ C(const C& c) { printf("C(const C& c)\n"); }
+ int iC;
+};
+
+C foo() {
+ return C();
+};
+
+class X { // ...
+public:
+ X(int) {}
+ X(const X&, int i = 1, int j = 2, C c = foo()) {
+ printf("X(const X&, %d, %d, %d)\n", i, j, c.iC);
+ }
+};
+
+
+struct S {
+ S();
+};
+
+S::S() { printf("S()\n"); }
+
+void Call(S) {};
+
+int main() {
+ X a(1);
+ X b(a, 2);
+ X c = b;
+ X d(a, 5, 6);
+ S s;
+ Call(s);
+}