Revert "Use a stub in crankshaft for grow store arrays."

test/mjsunit/ensure-growing-store-learns.js

-// Copyright 2010 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 --noverify-heap --noenable-slow-asserts
-
-// --noverify-heap and --noenable-slow-asserts are set because the test is too
-// slow with it on.
-
-// Ensure that keyed stores work, and optimized functions learn if the
-// store required change to dictionary mode. Verify that stores that grow
-// the array into large object space don't cause a deopt.
-(function() {
-  var a = [];
-
-  function foo(a, i) {
-    a[i] = 5.3;
-  }
-
-  foo(a, 1);
-  foo(a, 2);
-  foo(a, 3);
-  %OptimizeFunctionOnNextCall(foo);
-  a[3] = 0;
-  foo(a, 3);
-  assertEquals(a[3], 5.3);
-  foo(a, 50000);
-  assertUnoptimized(foo);
-  assertTrue(%HasDictionaryElements(a));
-
-  var b = [];
-  foo(b, 1);
-  foo(b, 2);
-  // Put b in dictionary mode.
-  b[10000] = 5;
-  assertTrue(%HasDictionaryElements(b));
-  foo(b, 3);
-  %OptimizeFunctionOnNextCall(foo);
-  foo(b, 50000);
-  assertOptimized(foo);
-  assertTrue(%HasDictionaryElements(b));
-
-  // Clearing feedback for the StoreIC in foo is important for runs with
-  // flag --stress-opt.
-  %ClearFunctionTypeFeedback(foo);
-})();
-
-
-(function() {
-  var a = new Array(10);
-
-  function foo2(a, i) {
-    a[i] = 50;
-  }
-
-  // The KeyedStoreIC will learn GROW_MODE.
-  foo2(a, 10);
-  foo2(a, 12);
-  foo2(a, 31);
-  %OptimizeFunctionOnNextCall(foo2);
-  foo2(a, 40);
-
-  // This test is way too slow without crankshaft.
-  if (4 != %GetOptimizationStatus(foo2)) {
-    assertOptimized(foo2);
-    assertTrue(%HasFastSmiElements(a));
-
-    // Grow a large array into large object space through the keyed store
-    // without deoptimizing. Grow by 10s. If we set elements too sparsely, the
-    // array will convert to dictionary mode.
-    a = new Array(99999);
-    assertTrue(%HasFastSmiElements(a));
-    for (var i = 0; i < 263000; i += 10) {
-      foo2(a, i);
-    }
-
-    // Verify that we are over 1 page in size, and foo2 remains optimized.
-    // This means we've smoothly transitioned to allocating in large object
-    // space.
-    assertTrue(%HasFastSmiElements(a));
-    assertTrue(a.length * 4 > (1024 * 1024));
-    assertOptimized(foo2);
-  }
-
-  %ClearFunctionTypeFeedback(foo2);
-})();