Home | History | Annotate | Download | only in compiler
      1 // Copyright 2013 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
     29 
     30 // Test loading a constant function on the prototype chain.
     31 
     32 var c = Object.create;
     33 var obj4 = c(null, { f4: { value: function() { return 4; }, writable: true }});
     34 var obj3 = c(obj4, { f3: { value: function() { return 3; }, writable: true }});
     35 var obj2 = c(obj3, { f2: { value: function() { return 2; }, writable: true }});
     36 var obj1 = c(obj2, { f1: { value: function() { return 1; }, writable: true }});
     37 var obj0 = c(obj1, { f0: { value: function() { return 0; }, writable: true }});
     38 
     39 function get4(obj) { return obj.f4; }
     40 
     41 assertEquals(4, get4(obj0)());
     42 assertEquals(4, get4(obj0)());
     43 %OptimizeFunctionOnNextCall(get4);
     44 assertEquals(4, get4(obj0)());
     45 obj4.f4 = function() { return 5; };
     46 assertEquals(5, get4(obj0)());
     47 
     48 function get3(obj) { return obj.f3; }
     49 
     50 assertEquals(3, get3(obj0)());
     51 assertEquals(3, get3(obj0)());
     52 %OptimizeFunctionOnNextCall(get3);
     53 assertEquals(3, get3(obj0)());
     54 obj2.f3 = function() { return 6; };
     55 assertEquals(6, get3(obj0)());
     56