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deps/v8/test/mjsunit/deopt-recursive-soft-once.js

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+// Copyright 2017 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 --turbofan --no-always-turbofan
+
+
+function foo(i, deopt = false, deoptobj = null) {
+    if (i == 0) {
+        if (deopt) {
+            // Trigger a soft deopt.
+            deoptobj.bar();
+        }
+    } else {
+        foo(i - 1, deopt, deoptobj);
+    }
+}
+
+%PrepareFunctionForOptimization(foo);
+foo(10);
+foo(10);
+%OptimizeFunctionOnNextCall(foo);
+foo(10);
+
+assertOptimized(foo);
+
+foo(10, true, { bar: function(){} });
+
+assertUnoptimized(foo);