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-rw-r--r--js/src/jit-test/tests/cacheir/map-get-symbol.js31
1 files changed, 31 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/map-get-symbol.js b/js/src/jit-test/tests/cacheir/map-get-symbol.js
new file mode 100644
index 0000000000..face9e4c2b
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/map-get-symbol.js
@@ -0,0 +1,31 @@
+// Return a new map, possibly filling some dummy entries to enforce creating
+// multiple hash buckets.
+function createMap(values, n) {
+ var xs = [...values];
+ for (var i = 0; i < n; ++i) {
+ xs.push({});
+ }
+ return new Map(xs.map((x, i) => [x, i + 1]));
+}
+
+function runTest(fn) {
+ fn(0);
+ fn(100);
+}
+
+function test(n) {
+ var xs = [Symbol(), Symbol()];
+ var ys = [Symbol(), Symbol()];
+ var zs = [...xs, ...ys];
+ var map = createMap(xs, n);
+
+ var N = 100;
+ var c = 0;
+ for (var i = 0; i < N; ++i) {
+ var z = zs[i & 3];
+ var v = map.get(z);
+ if (v !== undefined) c += v;
+ }
+ assertEq(c, N / 2 + N / 4);
+}
+runTest(test);