1 files changed, 91 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/setelem-id-guard.js b/js/src/jit-test/tests/cacheir/setelem-id-guard.js
new file mode 100644
index 0000000000..5f5ef82c58
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/setelem-id-guard.js
@@ -0,0 +1,91 @@
+function setSlot() {
+    var o = {x: 1, y: 2};
+    for (var i=0; i<100; i++) {
+        var p = (i & 1) ? "x" : "y";
+        o[p] = i;
+        assertEq((i & 1) ? o.x : o.y, i);
+    }
+}
+setSlot();
+
+function setUnboxed() {
+    var arr = [];
+    for (var i=0; i<100; i++)
+        arr.push({x: 1, y: 2});
+
+    for (var i=0; i<100; i++) {
+        var o = arr[i];
+        var p = (i & 1) ? "x" : "y";
+        o[p] = i;
+        assertEq((i & 1) ? o.x : o.y, i);
+    }
+}
+setUnboxed();
+
+function setUnboxedExpando() {
+    var arr = [];
+    for (var i=0; i<100; i++)
+        arr.push({x: 1, y: 2});
+
+    for (var i=0; i<100; i++) {
+        var o = arr[i];
+        o.a = 1;
+        o.b = 2;
+        var p = (i & 1) ? "a" : "b";
+        o[p] = i;
+        o[p] = o[p] + 4;
+        assertEq((i & 1) ? o.a : o.b, i + 4);
+    }
+}
+setUnboxedExpando();
+
+function setArrayLength() {
+    var arr = [];
+    for (var i=0; i<100; i++) {
+        var p = (i & 1) ? "length" : "x";
+        arr[p] = i;
+        assertEq((i & 1) ? arr.length : arr.x, i);
+    }
+}
+setArrayLength();
+
+function setter() {
+    var c = 0;
+    var o = {set x(i) { c += i; }, set y(i) { c += i + 2; }};
+    for (var i=0; i<100; i++) {
+        var p = (i & 1) ? "x" : "y";
+        o[p] = i;
+    }
+    assertEq(c, 5050);
+}
+setter();
+
+function addSlot() {
+    for (var i=0; i<100; i++) {
+        var o = {};
+        var p1 = (i & 1) ? "x" : "y";
+        var p2 = (i % 3) ? "a" : "b";
+        o[p1] = i;
+        o[p2] = i;
+        assertEq((i & 1) ? o.x : o.y, i);
+        assertEq((i % 3) ? o.a : o.b, i);
+    }
+}
+addSlot();
+
+function addExpandoSlot() {
+    var arr = [];
+    for (var i=0; i<100; i++)
+        arr.push({c: 1, d: 2});
+
+    for (var i=0; i<100; i++) {
+        var o = arr[i];
+        var p1 = (i & 1) ? "x" : "y";
+        var p2 = (i % 3) ? "a" : "b";
+        o[p1] = i;
+        o[p2] = i;
+        assertEq((i & 1) ? o.x : o.y, i);
+        assertEq((i % 3) ? o.a : o.b, i);
+    }
+}
+addExpandoSlot();