1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/global-getter.js b/js/src/jit-test/tests/cacheir/global-getter.js
new file mode 100644
index 0000000000..cd8d0b22df
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/global-getter.js
@@ -0,0 +1,36 @@
+// Tests for |this| value passed to getters defined on the global.
+
+function test(useWindowProxy) {
+    var g = newGlobal({useWindowProxy});
+    g.useWindowProxy = useWindowProxy;
+    g.evaluate(`
+        var x = 123;
+        Object.defineProperty(this, "getX", {get: function() { return this.x; }});
+        Object.defineProperty(Object.prototype, "protoGetX", {get: function() { return this.x * 2; }});
+        Object.defineProperty(this, "thisIsProxy", {get: function() { return isProxy(this); }});
+
+        function f() {
+            for (var i = 0; i < 100; i++) {
+                // GetGName
+                assertEq(getX, 123);
+                assertEq(protoGetX, 246);
+                assertEq(thisIsProxy, useWindowProxy);
+                // GetProp
+                assertEq(globalThis.getX, 123);
+                assertEq(globalThis.protoGetX, 246);
+                assertEq(globalThis.thisIsProxy, useWindowProxy);
+            }
+        }
+        f();
+    `);
+}
+
+for (let useWindowProxy of [true, false]) {
+    test(useWindowProxy);
+}
+
+setJitCompilerOption("ic.force-megamorphic", 1);
+
+for (let useWindowProxy of [true, false]) {
+    test(useWindowProxy);
+}