1 /* 2 * Copyright (c) 2009, 2015, 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.lir.gen; 24 25 import org.graalvm.compiler.core.common.LIRKind; 26 import org.graalvm.compiler.lir.Variable; 27 28 import jdk.vm.ci.meta.AllocatableValue; 29 import jdk.vm.ci.meta.PlatformKind; 30 import jdk.vm.ci.meta.Value; 31 32 /** 33 * This class traverses the HIR instructions and generates LIR instructions from them. 34 */ 35 public abstract class ArithmeticLIRGenerator implements ArithmeticLIRGeneratorTool { 36 37 LIRGenerator lirGen; 38 39 public LIRGenerator getLIRGen() { 40 return lirGen; 41 } 42 43 // automatic derived reference handling 44 45 protected abstract boolean isNumericInteger(PlatformKind kind); 46 47 protected abstract Variable emitAdd(LIRKind resultKind, Value a, Value b, boolean setFlags); 48 49 @Override 50 public final Variable emitAdd(Value aVal, Value bVal, boolean setFlags) { 51 LIRKind resultKind; 52 Value a = aVal; 53 Value b = bVal; 54 55 if (isNumericInteger(a.getPlatformKind())) { 56 LIRKind aKind = a.getValueKind(LIRKind.class); 57 LIRKind bKind = b.getValueKind(LIRKind.class); 58 assert a.getPlatformKind() == b.getPlatformKind(); 59 60 if (aKind.isUnknownReference()) { 61 resultKind = aKind; 62 } else if (bKind.isUnknownReference()) { 63 resultKind = bKind; 64 } else if (aKind.isValue() && bKind.isValue()) { 65 resultKind = aKind; 66 } else if (aKind.isValue()) { 67 if (bKind.isDerivedReference()) { 68 resultKind = bKind; 69 } else { 70 AllocatableValue allocatable = getLIRGen().asAllocatable(b); 71 resultKind = bKind.makeDerivedReference(allocatable); 72 b = allocatable; 73 } 74 } else if (bKind.isValue()) { 75 if (aKind.isDerivedReference()) { 76 resultKind = aKind; 77 } else { 78 AllocatableValue allocatable = getLIRGen().asAllocatable(a); 79 resultKind = aKind.makeDerivedReference(allocatable); 80 a = allocatable; 81 } 82 } else { 83 resultKind = aKind.makeUnknownReference(); 84 } 85 } else { 86 resultKind = LIRKind.combine(a, b); 87 } 88 89 return emitAdd(resultKind, a, b, setFlags); 90 } 91 92 protected abstract Variable emitSub(LIRKind resultKind, Value a, Value b, boolean setFlags); 93 94 @Override 95 public final Variable emitSub(Value aVal, Value bVal, boolean setFlags) { 96 LIRKind resultKind; 97 Value a = aVal; 98 Value b = bVal; 99 100 if (isNumericInteger(a.getPlatformKind())) { 101 LIRKind aKind = a.getValueKind(LIRKind.class); 102 LIRKind bKind = b.getValueKind(LIRKind.class); 103 assert a.getPlatformKind() == b.getPlatformKind(); 104 105 if (aKind.isUnknownReference()) { 106 resultKind = aKind; 107 } else if (bKind.isUnknownReference()) { 108 resultKind = bKind; 109 } 110 111 if (aKind.isValue() && bKind.isValue()) { 112 resultKind = aKind; 113 } else if (bKind.isValue()) { 114 if (aKind.isDerivedReference()) { 115 resultKind = aKind; 116 } else { 117 AllocatableValue allocatable = getLIRGen().asAllocatable(a); 118 resultKind = aKind.makeDerivedReference(allocatable); 119 a = allocatable; 120 } 121 } else if (aKind.isDerivedReference() && bKind.isDerivedReference() && aKind.getDerivedReferenceBase().equals(bKind.getDerivedReferenceBase())) { 122 resultKind = LIRKind.value(a.getPlatformKind()); 123 } else { 124 resultKind = aKind.makeUnknownReference(); 125 } 126 } else { 127 resultKind = LIRKind.combine(a, b); 128 } 129 130 return emitSub(resultKind, a, b, setFlags); 131 } 132 }