Upload Kmake

deps/v8/test/mjsunit/turboshaft/maglev-frontend/dematerialized-duplicated.js

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+// Copyright 2024 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
+
+function dematerialized_duplicated(n) {
+  let o1 = { x : 42 };
+  let o2 = { x : o1, y : o1 };
+  if (n < 0) {
+    // We won't execute this code when collecting feedback, which means that
+    // Maglev will do an unconditional deopt here (and {o2} will thus have no
+    // use besides the frame state for this deopt).
+    n + 5;
+    return o2;
+  }
+  return n + 2;
+}
+
+%PrepareFunctionForOptimization(dematerialized_duplicated);
+assertEquals(7, dematerialized_duplicated(5));
+assertEquals(7, dematerialized_duplicated(5));
+
+%OptimizeFunctionOnNextCall(dematerialized_duplicated);
+assertEquals(7, dematerialized_duplicated(5));
+
+let o = dematerialized_duplicated(-1);
+assertSame(o.x, o.y);
+assertEquals({ x : { x : 42 }, y : { x : 42 } }, o);