summaryrefslogtreecommitdiffstats
path: root/js/src/jit-test/tests/cacheir/map-has-object.js
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/jit-test/tests/cacheir/map-has-object.js')
-rw-r--r--js/src/jit-test/tests/cacheir/map-has-object.js30
1 files changed, 30 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/map-has-object.js b/js/src/jit-test/tests/cacheir/map-has-object.js
new file mode 100644
index 0000000000..46366586da
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/map-has-object.js
@@ -0,0 +1,30 @@
+// 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]));
+}
+
+function runTest(fn) {
+ fn(0);
+ fn(100);
+}
+
+function test(n) {
+ var xs = [{}, {}];
+ var ys = [{}, {}];
+ 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];
+ if (map.has(z)) c++;
+ }
+ assertEq(c, N / 2);
+}
+runTest(test);