Merged r16273 into trunk branch.

test/mjsunit/compiler/regress-shared-deopt.js

 // Copyright 2013 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
 
+var soft = false;
+
+// disable optimization of this global
+soft = true;
+soft = false;
+soft = true;
+soft = false;
+
 function test() {
-  var string = %NewString(10, true);
-  for (var i = 0; i < 10; i++) {
-    %_OneByteSeqStringSetChar(string, i, 65);
-    %_OneByteSeqStringSetChar(string, i, 66);
+  var f4 = makeF(4);
+  var f5 = makeF(5);
+
+  function makeF(i) {
+    return function f(x) {
+      if (x == 0) return i;
+      if (i == 4) if (soft) print("wahoo" + i);
+      return f4(x - 1);
+    }
   }
-  for (var i = 0; i < 10; i++) {
-    assertEquals("B", string[i]);
-  }
+
+  f4(9);
+  f4(11);
+  %OptimizeFunctionOnNextCall(f4);
+  f4(12);
+
+  f5(9);
+  f5(11);
+  %OptimizeFunctionOnNextCall(f5);
+  f5(12);
+
+  soft = true;
+  f4(1);
+  f5(9);
 }
 
 test();
-test();
-%OptimizeFunctionOnNextCall(test);
-test();
-