a

1 files changed, 19 insertions, 0 deletions

diff --git a/tests/bench/selfmod.zc b/tests/bench/selfmod.zc
new file mode 100644
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--- /dev/null
+++ b/tests/bench/selfmod.zc
@@ -0,0 +1,19 @@
+// self-modifying code in a loop: each pass rewrites a literal inside g, so the
+// translation of g is dropped and made again, while a pile of other code stays
+// translated. prints the sum so the engines can be compared.
+int litw(int v) { return v + v + 1; }
+int g() { return 1000; }
+int work(int n) { int i = 0, s = 0; while (i < n) { s = s + i % 7; i++; } return s; }
+int a1() { return work(50); } int a2() { return work(60); } int a3() { return work(70); } int a4() { return a1() + a2(); }
+int main() {
+	word p = g; int i = 0, tot = 0;
+	while (*p != litw(1000)) p++;
+	a4(); a3();
+	while (i < 20000) {
+		*p = litw(i);
+		tot = tot + g() + a3();
+		i++;
+	}
+	put_n(tot); put_c(10);
+	return 0;
+}