ClearNonLiveTransitions has to hold on to non-map values.

test/mjsunit/regress/regress-2163.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: --expose-gc
+
+// Handy abbreviation.
+var dp = Object.defineProperty;
+
+function getter() { return 111; }
+function setter(x) { print(222); }
+function anotherGetter() { return 333; }
+function anotherSetter(x) { print(444); }
+var obj1, obj2;
+
+// obj1 and obj2 share the getter accessor.
+obj1 = {};
+dp(obj1, "alpha", { get: getter, set: setter });
+obj2 = {}
+dp(obj2, "alpha", { get: getter });
+obj1 = {};
+assertEquals(111, obj2.alpha);
+gc();
+assertEquals(111, obj2.alpha);
+
+// obj1, obj2, and obj3 share the getter accessor.
+obj1 = {};
+dp(obj1, "alpha", { get: getter, set: setter });
+obj2 = {}
+dp(obj2, "alpha", { get: getter });
+obj1 = {};
+gc();
+obj3 = {}
+dp(obj3, "alpha", { get: getter });
+
+
+// obj1 and obj2 share the getter and setter accessor.
+obj1 = {};
+dp(obj1, "alpha", { get: getter, set: setter });
+obj1.beta = 10;
+obj2 = {}
+dp(obj2, "alpha", { get: getter, set: setter });
+obj1 = {};
+assertEquals(111, obj2.alpha);
+gc();
+obj2.alpha = 100
+assertEquals(111, obj2.alpha);