--- /dev/null 2016-05-31 09:42:47.975716356 -0700 +++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.lir.amd64/src/org/graalvm/compiler/lir/amd64/AMD64AddressValue.java 2016-12-09 00:53:38.754308401 -0800 @@ -0,0 +1,135 @@ +/* + * 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 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(); + } +}