Rollback of r11638, r11636 on trunk branch.

test/mjsunit/packed-elements.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
-//       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 --packed-arrays
-
-var has_packed_elements = !%HasFastHoleyElements(Array());
-
-function test1() {
-  var a = Array(8);
-  assertTrue(%HasFastSmiOrObjectElements(a));
-  assertTrue(%HasFastHoleyElements(a));
-}
-
-function test2() {
-  var a = Array();
-  assertTrue(%HasFastSmiOrObjectElements(a));
-  assertFalse(%HasFastHoleyElements(a));
-}
-
-function test3() {
-  var a = Array(1,2,3,4,5,6,7);
-  assertTrue(%HasFastSmiOrObjectElements(a));
-  assertFalse(%HasFastHoleyElements(a));
-}
-
-function test4() {
-  var a = [1, 2, 3, 4];
-  assertTrue(%HasFastSmiElements(a));
-  assertFalse(%HasFastHoleyElements(a));
-  var b = [1, 2,, 4];
-  assertTrue(%HasFastSmiElements(b));
-  assertTrue(%HasFastHoleyElements(b));
-}
-
-function test5() {
-  var a = [1, 2, 3, 4.5];
-  assertTrue(%HasFastDoubleElements(a));
-  assertFalse(%HasFastHoleyElements(a));
-  var b = [1,, 3.5, 4];
-  assertTrue(%HasFastDoubleElements(b));
-  assertTrue(%HasFastHoleyElements(b));
-  var c = [1, 3.5,, 4];
-  assertTrue(%HasFastDoubleElements(c));
-  assertTrue(%HasFastHoleyElements(c));
-}
-
-function test6() {
-  var x = new Object();
-  var a = [1, 2, 3.5, x];
-  assertTrue(%HasFastObjectElements(a));
-  assertFalse(%HasFastHoleyElements(a));
-  assertEquals(1, a[0]);
-  assertEquals(2, a[1]);
-  assertEquals(3.5, a[2]);
-  assertEquals(x, a[3]);
-  var b = [1,, 3.5, x];
-  assertTrue(%HasFastObjectElements(b));
-  assertTrue(%HasFastHoleyElements(b));
-  assertEquals(1, b[0]);
-  assertEquals(undefined, b[1]);
-  assertEquals(3.5, b[2]);
-  assertEquals(x, b[3]);
-  var c = [1, 3.5, x,,];
-  assertTrue(%HasFastObjectElements(c));
-  assertTrue(%HasFastHoleyElements(c));
-  assertEquals(1, c[0]);
-  assertEquals(3.5, c[1]);
-  assertEquals(x, c[2]);
-  assertEquals(undefined, c[3]);
-}
-
-function test_with_optimization(f) {
-  // Run tests in a loop to make sure that inlined Array() constructor runs out
-  // of new space memory and must fall back on runtime impl.
-  for (i = 0; i < 250000; ++i) f();
-  %OptimizeFunctionOnNextCall(f);
-  for (i = 0; i < 250000; ++i) f(); // Make sure GC happens
-}
-
-if (has_packed_elements) {
-  test_with_optimization(test1);
-  test_with_optimization(test2);
-  test_with_optimization(test3);
-  test_with_optimization(test4);
-  test_with_optimization(test5);
-  test_with_optimization(test6);
-}
-