summaryrefslogtreecommitdiffstats
path: root/js/src/jit-test/tests/warp/map-get-object.js
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/warp/map-get-object.js
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/warp/map-get-object.js')
-rw-r--r--js/src/jit-test/tests/warp/map-get-object.js104
1 files changed, 104 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/warp/map-get-object.js b/js/src/jit-test/tests/warp/map-get-object.js
new file mode 100644
index 0000000000..0c13b6e50a
--- /dev/null
+++ b/js/src/jit-test/tests/warp/map-get-object.js
@@ -0,0 +1,104 @@
+// Similar test as "cacheir/map-get-object.js", except that we now perform
+// duplicate lookups to ensure GVN works properly.
+
+// 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_same_map(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];
+ var v = map.get(z);
+ if (v !== undefined) c += v;
+ var w = map.get(z);
+ if (w !== undefined) c += w;
+ }
+ assertEq(c, N + N / 2);
+}
+runTest(test_same_map);
+
+// Duplicate the above tests, but this time use a different map.
+
+function test_different_map(n) {
+ var xs = [{}, {}];
+ var ys = [{}, {}];
+ var zs = [...xs, ...ys];
+ var map1 = createMap(xs, n);
+ var map2 = createMap(xs, n);
+
+ var N = 100;
+ var c = 0;
+ for (var i = 0; i < N; ++i) {
+ var z = zs[i & 3];
+ var v = map1.get(z);
+ if (v !== undefined) c += v;
+ var w = map2.get(z);
+ if (w !== undefined) c += w;
+ }
+ assertEq(c, N + N / 2);
+}
+runTest(test_different_map);
+
+// Test the alias information is correct.
+
+function test_alias(n) {
+ var xs = [{}, {}];
+ var map = createMap([], n);
+
+ var N = 100;
+ var c = 0;
+ for (var i = 0; i < N; ++i) {
+ var x = xs[i & 1];
+
+ map.set(x, 1);
+ var v = map.get(x);
+
+ map.delete(x);
+ var w = map.get(x);
+
+ c += v;
+ assertEq(w, undefined);
+ }
+ assertEq(c, N);
+}
+runTest(test_alias);
+
+// And finally test that we don't actually support GVN for objects, because the
+// hash changes when moving an object.
+
+function testRekey() {
+ var map = new Map();
+ var c = 0;
+ var N = 100;
+ for (var i = 0; i < N; ++i) {
+ var k = {};
+ map.set(k, 1);
+
+ c += map.get(k);
+
+ minorgc();
+
+ c += map.get(k);
+ }
+
+ assertEq(c, N * 2);
+}
+testRekey();