[Isolates] Merge crankshaft (r5922 from bleeding_edge).

test/mjsunit/compiler/pic.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.
+
+function GetX(o) { return o.x; }
+function CallF(o) { return o.f(); }
+function SetX(o) { o.x = 42; }
+function SetXY(o,y) { return o.x = y; }
+
+
+function Test(o) {
+  SetX(o);
+  assertEquals(42, GetX(o));
+  assertEquals(87, SetXY(o, 87));
+  assertEquals(87, GetX(o));
+  assertTrue(SetXY(o, o) === o);
+  assertTrue(o === GetX(o), "o === GetX(o)");
+  assertEquals("hest", SetXY(o, "hest"));
+  assertEquals("hest", GetX(o));
+  assertTrue(SetXY(o, Test) === Test);
+  assertTrue(Test === GetX(o), "Test === GetX(o)");
+  assertEquals(99, CallF(o));
+}
+
+// Create a bunch of objects with different layouts.
+var o1 = { x: 0, y: 1 };
+var o2 = { y: 1, x: 0 };
+var o3 = { y: 1, z: 2, x: 0 };
+o1.f = o2.f = o3.f = function() { return 99; }
+
+// Run the test until we're fairly sure we've optimized the
+// polymorphic property access.
+for (var i = 0; i < 1000000; i++) {
+  Test(o1);
+  Test(o2);
+  Test(o3);
+}
+
+// Make sure that the following doesn't crash.
+GetX(0);
+SetX(0);
+SetXY(0, 0);
+assertThrows("CallF(0)", TypeError);