codegen: add interpreter tests

Also simplify project structure. The executable is now produced in
the root directory. Work in progress.

1 files changed, 6 insertions, 0 deletions

diff --git a/testdata/fib b/testdata/fib
new file mode 100644
index 0000000..654c5c0
--- /dev/null
+++ b/testdata/fib
@@ -0,0 +1,6 @@
+func fib(i int) int {
+	if i < 2 { return i }
+	return fib(i-2) + fib(i-1)
+}
+
+println(fib(6))