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      1 // Copyright 2014 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --allow-natives-syntax --turbo-deoptimization
     29 
     30 (function OneByteSeqStringSetCharDeoptOsr() {
     31   function deopt() {
     32     %DeoptimizeFunction(f);
     33   }
     34 
     35   function f(string, osr) {
     36     var world = " world";
     37     %_OneByteSeqStringSetChar(0, (deopt(), 0x48), string);
     38 
     39     if (osr) while (%GetOptimizationStatus(f) == 2) {}
     40 
     41     return string + world;
     42   }
     43 
     44   assertEquals("Hello " + "world", f("hello", false));
     45   %OptimizeFunctionOnNextCall(f);
     46   assertEquals("Hello " + "world", f("hello", true));
     47 })();
     48 
     49 
     50 (function OneByteSeqStringSetCharDeopt() {
     51   function deopt() {
     52     %DeoptimizeFunction(f);
     53   }
     54 
     55   function g(x) {
     56   }
     57 
     58   function f(string) {
     59     g(%_OneByteSeqStringSetChar(0, (deopt(), 0x48), string));
     60     return string;
     61   }
     62 
     63   assertEquals("Hell" + "o", f("hello"));
     64   %OptimizeFunctionOnNextCall(f);
     65   assertEquals("Hell" + "o", f("hello"));
     66 })();
     67 
     68 
     69 (function TwoByteSeqStringSetCharDeopt() {
     70   function deopt() {
     71     %DeoptimizeFunction(f);
     72   }
     73 
     74   function g(x) {
     75   }
     76 
     77   function f(string) {
     78     g(%_TwoByteSeqStringSetChar(0, (deopt(), 0x48), string));
     79     return string;
     80   }
     81 
     82   assertEquals("Hell" + "o", f("\u20ACello"));
     83   %OptimizeFunctionOnNextCall(f);
     84   assertEquals("Hell" + "o", f("\u20ACello"));
     85 })();
     86