1 /* 2 * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.graalvm.compiler.graph.spi; 24 25 import jdk.vm.ci.meta.Assumptions; 26 import jdk.vm.ci.meta.ConstantReflectionProvider; 27 import jdk.vm.ci.meta.MetaAccessProvider; 28 29 import org.graalvm.compiler.core.common.spi.ConstantFieldProvider; 30 import org.graalvm.compiler.graph.Node; 31 32 public interface CanonicalizerTool { 33 34 Assumptions getAssumptions(); 35 36 MetaAccessProvider getMetaAccess(); 37 38 ConstantReflectionProvider getConstantReflection(); 39 40 ConstantFieldProvider getConstantFieldProvider(); 41 42 boolean canonicalizeReads(); 43 44 /** 45 * If this method returns false, not all {@link Node#usages() usages of a node} are yet 46 * available. So a node must not be canonicalized base on, e.g., information returned from 47 * {@link Node#hasNoUsages()}. 48 */ 49 boolean allUsagesAvailable(); 50 51 /** 52 * Indicates whether the target platform supports comparison of integers of a particular bit 53 * width. This check is used by canonicalizations that might introduce subword compares. 54 */ 55 boolean supportSubwordCompare(int bits); 56 }