Upload Kmake

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

@@ -0,0 +1,42 @@
+// 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_object(n) {
+  let o = { x : 42 };
+  if (n < 0) {
+    // We won't execute this code when collecting feedback, which means that
+    // Maglev will do an unconditional deopt here.
+    n + 5;
+    return o;
+  }
+  o.x = 17;
+  if (n == 1) {
+    // We won't execute this code when collecting feedback, which means that
+    // Maglev will do an unconditional deopt here.
+    n + 5;
+    return o;
+  }
+  return n + 2;
+}
+
+%PrepareFunctionForOptimization(dematerialized_object);
+assertEquals(7, dematerialized_object(5));
+assertEquals(7, dematerialized_object(5));
+
+%OptimizeFunctionOnNextCall(dematerialized_object);
+assertEquals(7, dematerialized_object(5));
+
+assertEquals({x : 42}, dematerialized_object(-1));
+
+%ClearFunctionFeedback(dematerialized_object);
+%PrepareFunctionForOptimization(dematerialized_object);
+assertEquals(7, dematerialized_object(5));
+assertEquals(7, dematerialized_object(5));
+
+%OptimizeFunctionOnNextCall(dematerialized_object);
+assertEquals(7, dematerialized_object(5));
+
+assertEquals({x : 17}, dematerialized_object(1));