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 
  24 
  25 package org.graalvm.compiler.graph.spi;
  26 
  27 import jdk.vm.ci.meta.Assumptions;
  28 import jdk.vm.ci.meta.ConstantReflectionProvider;
  29 import jdk.vm.ci.meta.MetaAccessProvider;
  30 
  31 import org.graalvm.compiler.core.common.spi.ConstantFieldProvider;
  32 import org.graalvm.compiler.graph.Node;
  33 import org.graalvm.compiler.options.OptionValues;
  34 
  35 public interface CanonicalizerTool {
  36 
  37     Assumptions getAssumptions();
  38 
  39     MetaAccessProvider getMetaAccess();
  40 
  41     ConstantReflectionProvider getConstantReflection();
  42 
  43     ConstantFieldProvider getConstantFieldProvider();
  44 
  45     boolean canonicalizeReads();
  46 
  47     /**
  48      * If this method returns false, not all {@link Node#usages() usages of a node} are yet
  49      * available. So a node must not be canonicalized base on, e.g., information returned from
  50      * {@link Node#hasNoUsages()}.
  51      */
  52     boolean allUsagesAvailable();
  53 
  54     /**
  55      * Indicates the smallest width for comparing an integer value on the target platform. If this
  56      * method returns null, then there is no known smallest compare width.
  57      */
  58     Integer smallestCompareWidth();
  59 
  60     OptionValues getOptions();
  61 }