1 files changed, 46 insertions, 0 deletions
diff --git a/tests/programs/o3licm.zc b/tests/programs/o3licm.zc
new file mode 100644
index 0000000..61e6a46
--- /dev/null
+++ b/tests/programs/o3licm.zc
@@ -0,0 +1,46 @@
+// loop invariants are built once in front of the loop, and a value two blocks both build is shared.
+// every result below has to match the plain run (ZYNOSHARE=1 turns the pass off).
+unchecked o3 int nest(int n, int k) {
+	int s = 0;
+	for (int i = 0; i < n; i++) {
+		for (int j = 0; j < n; j++) {
+			s = s + (k * 37 + 11) * (i + j);
+		}
+	}
+	return s;
+}
+unchecked o3 int loads(int* a, int n) {
+	int s = 0;
+	for (int i = 0; i < n; i++) s = s + a[0] * a[1] + i;
+	return s;
+}
+unchecked o3 int stores(int* a, int n) {
+	int s = 0;
+	for (int i = 0; i < n; i++) { a[0] = a[0] + 1; s = s + a[0] * 3; }
+	return s;
+}
+unchecked o3 int branchy(int x, int y, int n) {
+	int s = 0;
+	for (int i = 0; i < n; i++) {
+		if (i & 1) s = s + x * y * 5;
+		else s = s - x * y * 5 + i;
+	}
+	return s;
+}
+unchecked o3 int twice(int x, int y) {
+	int r = 0;
+	if (x > 0) r = (x * y + 3) * (x * y + 3);
+	else r = x * y + 3;
+	return r + (x * y + 3) * 7;
+}
+unchecked fn main() {
+	int* a = new(int, 4);
+	a[0] = 5; a[1] = 6;
+	put_n(nest(30, 3)); put_c(' ');
+	put_n(loads(a, 100)); put_c(' ');
+	put_n(stores(a, 10)); put_c(' ');
+	put_n(branchy(3, 4, 21)); put_c(' ');
+	put_n(twice(5, 2)); put_c(' ');
+	put_n(twice(-5, 2)); put_c(10);
+	return 0;
+}