| // Copyright 2011 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 --smi-only-arrays |
| |
| support_smi_only_arrays = %HasFastSmiOnlyElements([1,2,3,4,5,6,7,8,9,10]); |
| |
| if (support_smi_only_arrays) { |
| print("Tests include smi-only arrays."); |
| } else { |
| print("Tests do NOT include smi-only arrays."); |
| } |
| |
| if (support_smi_only_arrays) { |
| function test(test_double, test_object, set, length) { |
| // We apply the same operations to two identical arrays. The first array |
| // triggers an IC miss, upon which the conversion stub is generated, but the |
| // actual conversion is done in runtime. The second array, arriving at |
| // the previously patched IC, is then converted using the conversion stub. |
| var array_1 = new Array(length); |
| var array_2 = new Array(length); |
| |
| assertTrue(%HasFastSmiOnlyElements(array_1)); |
| assertTrue(%HasFastSmiOnlyElements(array_2)); |
| for (var i = 0; i < length; i++) { |
| if (i == length - 5 && test_double) { |
| // Trigger conversion to fast double elements at length-5. |
| set(array_1, i, 0.5); |
| set(array_2, i, 0.5); |
| assertTrue(%HasFastDoubleElements(array_1)); |
| assertTrue(%HasFastDoubleElements(array_2)); |
| } else if (i == length - 3 && test_object) { |
| // Trigger conversion to fast object elements at length-3. |
| set(array_1, i, 'object'); |
| set(array_2, i, 'object'); |
| assertTrue(%HasFastElements(array_1)); |
| assertTrue(%HasFastElements(array_2)); |
| } else if (i != length - 7) { |
| // Set the element to an integer but leave a hole at length-7. |
| set(array_1, i, 2*i+1); |
| set(array_2, i, 2*i+1); |
| } |
| } |
| |
| for (var i = 0; i < length; i++) { |
| if (i == length - 5 && test_double) { |
| assertEquals(0.5, array_1[i]); |
| assertEquals(0.5, array_2[i]); |
| } else if (i == length - 3 && test_object) { |
| assertEquals('object', array_1[i]); |
| assertEquals('object', array_2[i]); |
| } else if (i != length - 7) { |
| assertEquals(2*i+1, array_1[i]); |
| assertEquals(2*i+1, array_2[i]); |
| } else { |
| assertEquals(undefined, array_1[i]); |
| assertEquals(undefined, array_2[i]); |
| } |
| } |
| |
| assertEquals(length, array_1.length); |
| assertEquals(length, array_2.length); |
| } |
| |
| test(false, false, function(a,i,v){ a[i] = v; }, 20); |
| test(true, false, function(a,i,v){ a[i] = v; }, 20); |
| test(false, true, function(a,i,v){ a[i] = v; }, 20); |
| test(true, true, function(a,i,v){ a[i] = v; }, 20); |
| |
| test(false, false, function(a,i,v){ a[i] = v; }, 10000); |
| test(true, false, function(a,i,v){ a[i] = v; }, 10000); |
| test(false, true, function(a,i,v){ a[i] = v; }, 10000); |
| test(true, true, function(a,i,v){ a[i] = v; }, 10000); |
| |
| // Check COW arrays |
| function get_cow() { return [1, 2, 3]; } |
| |
| function transition(x) { x[0] = 1.5; } |
| |
| var ignore = get_cow(); |
| transition(ignore); // Handled by runtime. |
| var a = get_cow(); |
| var b = get_cow(); |
| transition(a); // Handled by IC. |
| assertEquals(1.5, a[0]); |
| assertEquals(1, b[0]); |
| } else { |
| print("Test skipped because smi only arrays are not supported."); |
| } |