Patch to improve ir-gen for constructors with default argument

expressions and a test case.

llvm-svn: 78213

1 files changed, 30 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/constructor-default-arg.cpp b/clang/test/CodeGenCXX/constructor-default-arg.cpp
new file mode 100644
index 0000000..c87ec91
--- /dev/null
+++ b/clang/test/CodeGenCXX/constructor-default-arg.cpp
@@ -0,0 +1,30 @@
+// RUN: clang-cc %s -emit-llvm -o %t &&
+// RUN: grep 'call void @_ZN1XC1ERK1Xiii' %t | count 3
+
+extern "C" int printf(...);
+
+
+struct C {
+	C() : iC(6) {}
+	int iC;
+};
+
+int foo() {
+  return 6;
+};
+
+class X { // ...
+public: 
+	X(int) {}
+	X(const X&, int i = 1, int j = 2, int k = foo()) {
+		printf("X(const X&, %d, %d, %d)\n", i, j, k);
+	}
+};
+
+int main()
+{
+	X a(1);
+	X b(a, 2);
+	X c = b;
+	X d(a, 5, 6);
+}