1 /* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package org.graalvm.compiler.core.sparc; 25 26 import org.graalvm.compiler.asm.sparc.SPARCAssembler; 27 import org.graalvm.compiler.nodes.ValueNode; 28 import org.graalvm.compiler.nodes.calc.AddNode; 29 import org.graalvm.compiler.nodes.memory.address.AddressNode; 30 import org.graalvm.compiler.phases.common.AddressLoweringPhase.AddressLowering; 31 32 import jdk.vm.ci.meta.JavaConstant; 33 34 public class SPARCAddressLowering extends AddressLowering { 35 36 @Override 37 public AddressNode lower(ValueNode address) { 38 return lower(address, 0); 39 } 40 41 @Override 42 public AddressNode lower(ValueNode base, ValueNode offset) { 43 JavaConstant immBase = asImmediate(base); 44 if (immBase != null && SPARCAssembler.isSimm13(immBase)) { 45 return lower(offset, immBase.asLong()); 46 } 47 48 JavaConstant immOffset = asImmediate(offset); 49 if (immOffset != null && SPARCAssembler.isSimm13(immOffset)) { 50 return lower(base, immOffset.asLong()); 51 } 52 return base.graph().unique(new SPARCIndexedAddressNode(base, offset)); 53 } 54 55 private AddressNode lower(ValueNode base, long displacement) { 56 if (base instanceof AddNode) { 57 AddNode add = (AddNode) base; 58 59 JavaConstant immX = asImmediate(add.getX()); 60 if (immX != null && SPARCAssembler.isSimm13(displacement + immX.asLong())) { 61 return lower(add.getY(), displacement + immX.asLong()); 62 } 63 64 JavaConstant immY = asImmediate(add.getY()); 65 if (immY != null && SPARCAssembler.isSimm13(displacement + immY.asLong())) { 66 return lower(add.getX(), displacement + immY.asLong()); 67 } 68 69 if (displacement == 0) { 70 return lower(add.getX(), add.getY()); 71 } 72 } 73 74 assert SPARCAssembler.isSimm13(displacement); 75 return base.graph().unique(new SPARCImmediateAddressNode(base, (int) displacement)); 76 } 77 78 private static JavaConstant asImmediate(ValueNode value) { 79 JavaConstant c = value.asJavaConstant(); 80 if (c != null && c.getJavaKind().isNumericInteger()) { 81 return c; 82 } else { 83 return null; 84 } 85 } 86 }