Mercurial > hg > truffle
view graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/calc/NarrowableArithmeticNode.java @ 21678:7355942cb270
Improve lowering of the type check node.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Wed, 03 Jun 2015 01:10:18 +0200 |
parents | 545cd6b3b377 |
children |
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/* * Copyright (c) 2014, 2015, 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. * * 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.graal.nodes.calc; /** * Marker interface for nodes where it is valid to apply a {@link NarrowNode} to its inputs and do a * narrow operation instead of doing the wide operation and applying the {@link NarrowNode} to the * result. */ public interface NarrowableArithmeticNode { /** * Check whether this operation can be narrowed to {@code resultBits} bit without loss of * precision. * * @param resultBits */ default boolean isNarrowable(int resultBits) { return true; } }