Upload Kmake

deps/v8/test/mjsunit/maglev/tier-to-ml-to-tf.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
+// Flags: --no-baseline-batch-compilation
+
+function f(x) {
+  var y = 0;
+  for (var i = 0; i < x; i++) {
+    y = 1;
+  }
+  return y;
+}
+
+let keep_going = 10000000;  // A counter to avoid test hangs on failure.
+
+function g() {
+  // Test that normal tiering (without OptimizeFooOnNextCall) works.
+  // We test the entire pipeline, i.e. Ignition-SP-ML-TF.
+
+  f(10);
+
+  if (%IsSparkplugEnabled()) {
+    while (!%ActiveTierIsSparkplug(f) && --keep_going) f(10);
+    assertTrue(%ActiveTierIsSparkplug(f));
+  }
+
+  if (%IsMaglevEnabled()) {
+    while (!%ActiveTierIsMaglev(f) && --keep_going) f(10);
+    assertTrue(%ActiveTierIsMaglev(f));
+  }
+
+  if (%IsTurbofanEnabled()) {
+    while (!%ActiveTierIsTurbofan(f) && --keep_going) f(10);
+    assertTrue(%ActiveTierIsTurbofan(f));
+
+    f(10);
+    assertTrue(%ActiveTierIsTurbofan(f));
+  }
+}
+%NeverOptimizeFunction(g);
+
+g();