| /* |
| * Copyright (c) 2015, 2016, 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.core.sparc; |
| |
| import org.graalvm.compiler.asm.sparc.SPARCAssembler; |
| import org.graalvm.compiler.nodes.ValueNode; |
| import org.graalvm.compiler.nodes.calc.AddNode; |
| import org.graalvm.compiler.nodes.memory.address.AddressNode; |
| import org.graalvm.compiler.phases.common.AddressLoweringPhase.AddressLowering; |
| |
| import jdk.vm.ci.meta.JavaConstant; |
| |
| public class SPARCAddressLowering extends AddressLowering { |
| |
| @Override |
| public AddressNode lower(ValueNode base, ValueNode offset) { |
| JavaConstant immBase = asImmediate(base); |
| if (immBase != null && SPARCAssembler.isSimm13(immBase)) { |
| return lower(offset, immBase.asLong()); |
| } |
| |
| JavaConstant immOffset = asImmediate(offset); |
| if (immOffset != null && SPARCAssembler.isSimm13(immOffset)) { |
| return lower(base, immOffset.asLong()); |
| } |
| return base.graph().unique(new SPARCIndexedAddressNode(base, offset)); |
| } |
| |
| private AddressNode lower(ValueNode base, long displacement) { |
| if (base instanceof AddNode) { |
| AddNode add = (AddNode) base; |
| |
| JavaConstant immX = asImmediate(add.getX()); |
| if (immX != null && SPARCAssembler.isSimm13(displacement + immX.asLong())) { |
| return lower(add.getY(), displacement + immX.asLong()); |
| } |
| |
| JavaConstant immY = asImmediate(add.getY()); |
| if (immY != null && SPARCAssembler.isSimm13(displacement + immY.asLong())) { |
| return lower(add.getX(), displacement + immY.asLong()); |
| } |
| |
| if (displacement == 0) { |
| return lower(add.getX(), add.getY()); |
| } |
| } |
| |
| assert SPARCAssembler.isSimm13(displacement); |
| return base.graph().unique(new SPARCImmediateAddressNode(base, (int) displacement)); |
| } |
| |
| private static JavaConstant asImmediate(ValueNode value) { |
| JavaConstant c = value.asJavaConstant(); |
| if (c != null && c.getJavaKind().isNumericInteger()) { |
| return c; |
| } else { |
| return null; |
| } |
| } |
| } |