| /* |
| * Copyright (c) 2013, 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.amd64; |
| |
| import static org.graalvm.compiler.lir.LIRInstruction.OperandFlag.REG; |
| import static jdk.vm.ci.code.ValueUtil.isLegal; |
| |
| import java.util.EnumSet; |
| |
| import org.graalvm.compiler.asm.amd64.AMD64Address; |
| import org.graalvm.compiler.asm.amd64.AMD64Address.Scale; |
| import org.graalvm.compiler.lir.CompositeValue; |
| import org.graalvm.compiler.lir.InstructionValueConsumer; |
| import org.graalvm.compiler.lir.InstructionValueProcedure; |
| import org.graalvm.compiler.lir.LIRInstruction; |
| import org.graalvm.compiler.lir.LIRInstruction.OperandFlag; |
| import org.graalvm.compiler.lir.LIRInstruction.OperandMode; |
| |
| import jdk.vm.ci.code.Register; |
| import jdk.vm.ci.code.RegisterValue; |
| import jdk.vm.ci.meta.AllocatableValue; |
| import jdk.vm.ci.meta.Value; |
| import jdk.vm.ci.meta.ValueKind; |
| |
| public final class AMD64AddressValue extends CompositeValue { |
| |
| @Component({REG, OperandFlag.ILLEGAL}) protected AllocatableValue base; |
| @Component({REG, OperandFlag.ILLEGAL}) protected AllocatableValue index; |
| protected final Scale scale; |
| protected final int displacement; |
| |
| private static final EnumSet<OperandFlag> flags = EnumSet.of(OperandFlag.REG, OperandFlag.ILLEGAL); |
| |
| public AMD64AddressValue(ValueKind<?> kind, AllocatableValue base, int displacement) { |
| this(kind, base, Value.ILLEGAL, Scale.Times1, displacement); |
| } |
| |
| public AMD64AddressValue(ValueKind<?> kind, AllocatableValue base, AllocatableValue index, Scale scale, int displacement) { |
| super(kind); |
| this.base = base; |
| this.index = index; |
| this.scale = scale; |
| this.displacement = displacement; |
| |
| assert scale != null; |
| } |
| |
| @Override |
| public CompositeValue forEachComponent(LIRInstruction inst, OperandMode mode, InstructionValueProcedure proc) { |
| AllocatableValue newBase = (AllocatableValue) proc.doValue(inst, base, mode, flags); |
| AllocatableValue newIndex = (AllocatableValue) proc.doValue(inst, index, mode, flags); |
| if (!base.identityEquals(newBase) || !index.identityEquals(newIndex)) { |
| return new AMD64AddressValue(getValueKind(), newBase, newIndex, scale, displacement); |
| } |
| return this; |
| } |
| |
| @Override |
| protected void visitEachComponent(LIRInstruction inst, OperandMode mode, InstructionValueConsumer proc) { |
| proc.visitValue(inst, base, mode, flags); |
| proc.visitValue(inst, index, mode, flags); |
| } |
| |
| private static Register toRegister(AllocatableValue value) { |
| if (value.equals(Value.ILLEGAL)) { |
| return Register.None; |
| } else { |
| RegisterValue reg = (RegisterValue) value; |
| return reg.getRegister(); |
| } |
| } |
| |
| public AMD64Address toAddress() { |
| return new AMD64Address(toRegister(base), toRegister(index), scale, displacement); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder s = new StringBuilder("["); |
| String sep = ""; |
| if (isLegal(base)) { |
| s.append(base); |
| sep = " + "; |
| } |
| if (isLegal(index)) { |
| s.append(sep).append(index).append(" * ").append(scale.value); |
| sep = " + "; |
| } |
| if (displacement < 0) { |
| s.append(" - ").append(-displacement); |
| } else if (displacement > 0) { |
| s.append(sep).append(displacement); |
| } |
| s.append("]"); |
| return s.toString(); |
| } |
| |
| public boolean isValidImplicitNullCheckFor(Value value, int implicitNullCheckLimit) { |
| return value.equals(base) && index.equals(Value.ILLEGAL) && displacement >= 0 && displacement < implicitNullCheckLimit; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (obj instanceof AMD64AddressValue) { |
| AMD64AddressValue addr = (AMD64AddressValue) obj; |
| return getValueKind().equals(addr.getValueKind()) && displacement == addr.displacement && base.equals(addr.base) && scale == addr.scale && index.equals(addr.index); |
| } |
| return false; |
| } |
| |
| @Override |
| public int hashCode() { |
| return base.hashCode() ^ index.hashCode() ^ (displacement << 4) ^ (scale.value << 8) ^ getValueKind().hashCode(); |
| } |
| } |