Upload Kmake

deps/v8/test/mjsunit/turboshaft/maglev-frontend/regress-406054652.js

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+// Copyright 2025 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Flags: --allow-natives-syntax --turbolev --turbofan
+
+let values = [];
+
+function reset() {
+  values = [];
+}
+function mapper(value, ix, thisArg) {
+  values.push(value);
+  thisArg.length = 2;
+}
+%PrepareFunctionForOptimization(mapper);
+
+function testForEach() {
+  reset();
+  [1, 2, 3].forEach(mapper);
+  assertEquals([1, 2], values);
+}
+%PrepareFunctionForOptimization(testForEach);
+
+testForEach();
+
+%OptimizeFunctionOnNextCall(testForEach);
+testForEach();
+
+function testMap() {
+  reset();
+  [1, 2, 3].map(mapper);
+  assertEquals([1, 2], values);
+}
+%PrepareFunctionForOptimization(testMap);
+
+testMap();
+
+%OptimizeFunctionOnNextCall(testMap);
+testMap();