vendor/clang/clang-r84119

1 files changed, 43 insertions, 0 deletions

diff --git a/test/CodeGenCXX/copy-constructor-elim.cpp b/test/CodeGenCXX/copy-constructor-elim.cpp
new file mode 100644
index 0000000000000..daef92cdb7674
--- /dev/null
+++ b/test/CodeGenCXX/copy-constructor-elim.cpp
@@ -0,0 +1,43 @@
+// RUN: clang-cc -emit-llvm -o %t %s &&
+// RUN: grep "_ZN1CC1ERK1C" %t | count 0 &&
+// RUN: grep "_ZN1SC1ERK1S" %t | count 0 &&
+// RUN: true
+
+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);
+}