| /* |
| * Copyright (c) 2009, 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 org.graalvm.compiler.lir.gen; |
| |
| import org.graalvm.compiler.core.common.LIRKind; |
| import org.graalvm.compiler.lir.Variable; |
| import org.graalvm.compiler.options.OptionValues; |
| |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.PlatformKind; |
| import jdk.vm.ci.meta.Value; |
| |
| /** |
| * This class traverses the HIR instructions and generates LIR instructions from them. |
| */ |
| public abstract class ArithmeticLIRGenerator implements ArithmeticLIRGeneratorTool { |
| |
| LIRGenerator lirGen; |
| |
| public LIRGenerator getLIRGen() { |
| return lirGen; |
| } |
| |
| protected final AllocatableValue asAllocatable(Value value) { |
| return lirGen.asAllocatable(value); |
| } |
| |
| public OptionValues getOptions() { |
| return getLIRGen().getResult().getLIR().getOptions(); |
| } |
| // automatic derived reference handling |
| |
| protected abstract boolean isNumericInteger(PlatformKind kind); |
| |
| protected abstract Variable emitAdd(LIRKind resultKind, Value a, Value b, boolean setFlags); |
| |
| protected abstract Variable emitSub(LIRKind resultKind, Value a, Value b, boolean setFlags); |
| |
| @Override |
| public final Variable emitAdd(Value aVal, Value bVal, boolean setFlags) { |
| return emitAddOrSub(aVal, bVal, setFlags, true); |
| } |
| |
| @Override |
| public final Variable emitSub(Value aVal, Value bVal, boolean setFlags) { |
| return emitAddOrSub(aVal, bVal, setFlags, false); |
| } |
| |
| private Variable emitAddOrSub(Value aVal, Value bVal, boolean setFlags, boolean isAdd) { |
| LIRKind resultKind; |
| Value a = aVal; |
| Value b = bVal; |
| |
| if (isNumericInteger(a.getPlatformKind())) { |
| LIRKind aKind = a.getValueKind(LIRKind.class); |
| LIRKind bKind = b.getValueKind(LIRKind.class); |
| assert a.getPlatformKind() == b.getPlatformKind() : a.getPlatformKind() + " vs. " + b.getPlatformKind(); |
| |
| if (aKind.isUnknownReference()) { |
| resultKind = aKind; |
| } else if (bKind.isUnknownReference()) { |
| resultKind = bKind; |
| } else if (aKind.isValue() && bKind.isValue()) { |
| resultKind = aKind; |
| } else if (aKind.isValue()) { |
| if (bKind.isDerivedReference()) { |
| resultKind = bKind; |
| } else { |
| AllocatableValue allocatable = asAllocatable(b); |
| resultKind = bKind.makeDerivedReference(allocatable); |
| b = allocatable; |
| } |
| } else if (bKind.isValue()) { |
| if (aKind.isDerivedReference()) { |
| resultKind = aKind; |
| } else { |
| AllocatableValue allocatable = asAllocatable(a); |
| resultKind = aKind.makeDerivedReference(allocatable); |
| a = allocatable; |
| } |
| } else { |
| resultKind = aKind.makeUnknownReference(); |
| } |
| } else { |
| resultKind = LIRKind.combine(a, b); |
| } |
| |
| return isAdd ? emitAdd(resultKind, a, b, setFlags) : emitSub(resultKind, a, b, setFlags); |
| } |
| |
| } |