Rename "parallel recompilation" to "concurrent recompilation".

test/mjsunit/manual-parallel-recompile.js

 // 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
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 //       with the distribution.
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 //       from this software without specific prior written permission.
 //
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 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 // 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: --parallel-recompilation --parallel-recompilation-delay=50
+// Flags: --concurrent-recompilation --concurrent-recompilation-delay=50
 
-if (!%IsParallelRecompilationSupported()) {
-  print("Parallel recompilation is disabled. Skipping this test.");
+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, "parallel");
-%OptimizeFunctionOnNextCall(g, "parallel");
+%OptimizeFunctionOnNextCall(f, "concurrent");
+%OptimizeFunctionOnNextCall(g, "concurrent");
 f(g(2));  // Trigger optimization.
 
-assertUnoptimized(f, "no sync");  // Not yet optimized while parallel thread
+assertUnoptimized(f, "no sync");  // Not yet optimized while background thread
 assertUnoptimized(g, "no sync");  // is running.
 
-assertOptimized(f, "sync");  // Optimized once we sync with the parallel thread.
-assertOptimized(g, "sync");
+assertOptimized(f, "sync");  // Optimized once we sync with the
+assertOptimized(g, "sync");  // background thread.