Mercurial > hg > truffle
view graal/com.oracle.graal.lir.amd64/src/com/oracle/graal/lir/amd64/AMD64AddressValue.java @ 20974:1af76d197949
Specialize LIRInstruction visit paths a little
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Tue, 14 Apr 2015 11:36:48 -0700 |
parents | cb406df0ecc3 |
children | 082417ac43e4 |
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/* * 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 com.oracle.graal.lir.amd64; import static com.oracle.graal.api.code.ValueUtil.*; import static com.oracle.graal.lir.LIRInstruction.OperandFlag.*; import java.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.asm.amd64.*; import com.oracle.graal.asm.amd64.AMD64Address.Scale; import com.oracle.graal.lir.*; import com.oracle.graal.lir.LIRInstruction.*; public final class AMD64AddressValue extends CompositeValue { private static final long serialVersionUID = -4444600052487578694L; @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(LIRKind kind, AllocatableValue base, int displacement) { this(kind, base, Value.ILLEGAL, Scale.Times1, displacement); } public AMD64AddressValue(LIRKind 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(getLIRKind(), newBase, newIndex, scale, displacement); } return this; } @Override protected void forEachComponent(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 getLIRKind().equals(addr.getLIRKind()) && 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) ^ getLIRKind().hashCode(); } }