Upload Kmake

deps/v8/test/mjsunit/maglev/add-smi.js

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+// Copyright 2022 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 --maglev
+
+// Checks Smi add operation and deopt while untagging.
+(function() {
+  function add(x, y) {
+    return x + y;
+  }
+
+  %PrepareFunctionForOptimization(add);
+  assertEquals(3, add(1, 2));
+
+  %OptimizeMaglevOnNextCall(add);
+  assertEquals(3, add(1, 2));
+  assertTrue(isMaglevved(add));
+
+  assertEquals(0x40000000, add(1, 0x3FFFFFFF));
+  assertTrue(isMaglevved(add));
+})();
+
+// Checks when we deopt due to tagging.
+(function() {
+  function add(x, y) {
+    return x + y;
+  }
+
+  %PrepareFunctionForOptimization(add);
+  assertEquals(3, add(1, 2));
+
+  %OptimizeMaglevOnNextCall(add);
+  assertEquals(3, add(1, 2));
+  assertTrue(isMaglevved(add));
+
+  // We should deopt here in Int32Add.
+  assertEquals(3.2, add(1.2, 2));
+  assertFalse(isMaglevved(add));
+})();