1 /*
   2  * Copyright (c) 2015, 2018, 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.lir.aarch64;
  26 
  27 import org.graalvm.compiler.lir.Variable;
  28 import org.graalvm.compiler.lir.gen.ArithmeticLIRGeneratorTool;
  29 
  30 import jdk.vm.ci.aarch64.AArch64Kind;
  31 import jdk.vm.ci.meta.Value;
  32 
  33 /**
  34  * This interface can be used to generate AArch64 LIR for arithmetic operations.
  35  */
  36 public interface AArch64ArithmeticLIRGeneratorTool extends ArithmeticLIRGeneratorTool {
  37 
  38     Value emitCountLeadingZeros(Value value);
  39 
  40     Value emitCountTrailingZeros(Value value);
  41 
  42     enum RoundingMode {
  43         NEAREST(0),
  44         DOWN(1),
  45         UP(2),
  46         TRUNCATE(3);
  47 
  48         public final int encoding;
  49 
  50         RoundingMode(int encoding) {
  51             this.encoding = encoding;
  52         }
  53     }
  54 
  55     Value emitRound(Value value, RoundingMode mode);
  56 
  57     void emitCompareOp(AArch64Kind cmpKind, Variable left, Value right);
  58 }