1 files changed, 39 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/fun-apply-as-call-native-3.js b/js/src/jit-test/tests/cacheir/fun-apply-as-call-native-3.js
new file mode 100644
index 0000000000..5d3cee4afa
--- /dev/null
+++ b/js/src/jit-test/tests/cacheir/fun-apply-as-call-native-3.js
@@ -0,0 +1,39 @@
+// Function.prototype.apply is inlined as Function.prototype.call when it's
+// called with less than two arguments.
+//
+// Test inlining through specialised natives.
+
+// NOTE: We don't inline when |apply| is called with zero arguments.
+function testThisAbsent() {
+  for (let i = 0; i < 200; ++i) {
+    let r = Array.apply();
+    assertEq(r.length, 0);
+  }
+}
+for (let i = 0; i < 2; ++i) testThisAbsent();
+
+function test0() {
+  for (let i = 0; i < 200; ++i) {
+    let r = Array.apply(null);
+    assertEq(r.length, 0);
+  }
+}
+for (let i = 0; i < 2; ++i) test0();
+
+// NOTE: We don't yet inline the case when the second argument is |null|.
+function test1Null() {
+  for (let i = 0; i < 200; ++i) {
+    let r = Array.apply(null, null);
+    assertEq(r.length, 0);
+  }
+}
+for (let i = 0; i < 2; ++i) test1Null();
+
+// NOTE: We don't yet inline the case when the second argument is |undefined|.
+function test1Undefined() {
+  for (let i = 0; i < 200; ++i) {
+    let r = Array.apply(null, undefined);
+    assertEq(r.length, 0);
+  }
+}
+for (let i = 0; i < 2; ++i) test1Undefined();