1 /* 2 * Copyright (c) 2015, 2018, 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 25 26 package org.graalvm.compiler.core.sparc; 27 28 import org.graalvm.compiler.asm.sparc.SPARCAssembler; 29 import org.graalvm.compiler.nodes.ValueNode; 30 import org.graalvm.compiler.nodes.calc.AddNode; 31 import org.graalvm.compiler.nodes.memory.address.AddressNode; 32 import org.graalvm.compiler.phases.common.AddressLoweringPhase.AddressLowering; 33 34 import jdk.vm.ci.meta.JavaConstant; 35 36 public class SPARCAddressLowering extends AddressLowering { 37 38 @Override 39 public AddressNode lower(ValueNode base, ValueNode offset) { 40 JavaConstant immBase = asImmediate(base); 41 if (immBase != null && SPARCAssembler.isSimm13(immBase)) { 42 return lower(offset, immBase.asLong()); 43 } 44 45 JavaConstant immOffset = asImmediate(offset); 46 if (immOffset != null && SPARCAssembler.isSimm13(immOffset)) { 47 return lower(base, immOffset.asLong()); 48 } 49 return base.graph().unique(new SPARCIndexedAddressNode(base, offset)); 50 } 51 52 private AddressNode lower(ValueNode base, long displacement) { 53 if (base instanceof AddNode) { 54 AddNode add = (AddNode) base; 55 56 JavaConstant immX = asImmediate(add.getX()); 57 if (immX != null && SPARCAssembler.isSimm13(displacement + immX.asLong())) { 58 return lower(add.getY(), displacement + immX.asLong()); 59 } 60 61 JavaConstant immY = asImmediate(add.getY()); 62 if (immY != null && SPARCAssembler.isSimm13(displacement + immY.asLong())) { 63 return lower(add.getX(), displacement + immY.asLong()); 64 } 65 66 if (displacement == 0) { 67 return lower(add.getX(), add.getY()); 68 } 69 } 70 71 assert SPARCAssembler.isSimm13(displacement); 72 return base.graph().unique(new SPARCImmediateAddressNode(base, (int) displacement)); 73 } 74 75 private static JavaConstant asImmediate(ValueNode value) { 76 JavaConstant c = value.asJavaConstant(); 77 if (c != null && c.getJavaKind().isNumericInteger()) { 78 return c; 79 } else { 80 return null; 81 } 82 } 83 }