Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/utilities/NeverValidAssumption.java @ 21106:ec894427332d
Don't insert serial barriers for null stores
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Thu, 23 Apr 2015 12:55:54 -0700 |
parents | e9c8742148c1 |
children |
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/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.api.utilities; import com.oracle.truffle.api.*; import com.oracle.truffle.api.nodes.*; /** * An assumption that is never valid. Used as a placeholder where an assumption is needed that * should be invalid from the start. */ public final class NeverValidAssumption implements Assumption { public static final NeverValidAssumption INSTANCE = new NeverValidAssumption(); private NeverValidAssumption() { } @Override public void check() throws InvalidAssumptionException { throw new InvalidAssumptionException(); } @Override public void invalidate() { } @Override public String getName() { return getClass().getName(); } @Override public boolean isValid() { return false; } }