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+// Copyright 2012 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --allow-natives-syntax --expose-gc
+// Flags: --concurrent-recompilation --block-concurrent-recompilation
+
+if (!%IsConcurrentRecompilationSupported()) {
+ print("Concurrent recompilation is disabled. Skipping this test.");
+ quit();
+}
+
+function f(x) {
+ var xx = x * x;
+ var xxstr = xx.toString();
+ return xxstr.length;
+}
+
+function g(x) {
+ var xxx = Math.sqrt(x) | 0;
+ var xxxstr = xxx.toString();
+ return xxxstr.length;
+}
+
+function k(x) {
+ return x * x;
+}
+
+f(g(1));
+assertUnoptimized(f);
+assertUnoptimized(g);
+
+%OptimizeFunctionOnNextCall(f, "concurrent");
+%OptimizeFunctionOnNextCall(g, "concurrent");
+f(g(2)); // Kick off recompilation.
+
+assertUnoptimized(f, "no sync"); // Not yet optimized since recompilation
+assertUnoptimized(g, "no sync"); // is still blocked.
+
+// Let concurrent recompilation proceed.
+%UnblockConcurrentRecompilation();
+
+assertOptimized(f, "sync"); // Optimized once we sync with the
+assertOptimized(g, "sync"); // background thread.