Meta: initial commit of WestCo optimized toolchain.

Signed-off-by: Amlal El Mahrouss <amlal.elmahrouss@icloud.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/CompilerDriver/cc2/regression-tests/mixed-forwarding.cpp2 b/CompilerDriver/cc2/regression-tests/mixed-forwarding.cpp2
new file mode 100644
index 0000000..4415753
--- /dev/null
+++ b/CompilerDriver/cc2/regression-tests/mixed-forwarding.cpp2
@@ -0,0 +1,35 @@
+#include <iostream>
+#include <utility>
+
+struct X {
+    int i;
+    X(int i)         : i{     i} { std::cout << "+X "     << i << "\n"; }
+    X(X const& that) : i{that.i} { std::cout << "copy X " << i << "\n"; }
+    X(X &&     that) : i{that.i} { std::cout << "move X " << i << "\n"; }
+};
+
+copy_from: (copy _) = { }
+
+use: (_) = {}
+
+// invoking each of these with an rvalue std::pair argument ...
+apply_implicit_forward: (forward t: std::pair<X, X>) = {
+    copy_from(t.first);             // copies
+    copy_from(t.second);            // moves
+}
+apply_explicit_forward: (forward t: std::pair<X, X>) = {
+    copy_from(forward t.first);     // moves
+    copy_from(forward t.second);    // moves
+}
+
+main: ()->int = {
+    t1: std::pair<X,X> = (1,2);
+    apply_implicit_forward(t1);
+    use(t1);
+    apply_implicit_forward(t1);
+
+    t2: std::pair<X,X> = (3,4);
+    apply_explicit_forward(t2);
+    use(t2);
+    apply_explicit_forward(t2);
+}