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.amd64; 25 26 import static org.graalvm.compiler.lir.LIRValueUtil.asConstant; 27 import static org.graalvm.compiler.lir.LIRValueUtil.isConstantValue; 28 import static org.graalvm.compiler.lir.LIRValueUtil.isStackSlotValue; 29 import static jdk.vm.ci.code.ValueUtil.isRegister; 30 31 import org.graalvm.compiler.core.common.NumUtil; 32 import org.graalvm.compiler.core.common.type.DataPointerConstant; 33 import org.graalvm.compiler.debug.GraalError; 34 import org.graalvm.compiler.lir.amd64.AMD64AddressValue; 35 import org.graalvm.compiler.lir.amd64.AMD64LIRInstruction; 36 import org.graalvm.compiler.lir.amd64.AMD64Move.AMD64StackMove; 37 import org.graalvm.compiler.lir.amd64.AMD64Move.LeaDataOp; 38 import org.graalvm.compiler.lir.amd64.AMD64Move.LeaOp; 39 import org.graalvm.compiler.lir.amd64.AMD64Move.MoveFromConstOp; 40 import org.graalvm.compiler.lir.amd64.AMD64Move.MoveFromRegOp; 41 import org.graalvm.compiler.lir.amd64.AMD64Move.MoveToRegOp; 42 43 import jdk.vm.ci.amd64.AMD64Kind; 44 import jdk.vm.ci.code.Register; 45 import jdk.vm.ci.meta.AllocatableValue; 46 import jdk.vm.ci.meta.Constant; 47 import jdk.vm.ci.meta.JavaConstant; 48 import jdk.vm.ci.meta.Value; 49 50 public abstract class AMD64MoveFactory extends AMD64MoveFactoryBase { 51 52 public AMD64MoveFactory(BackupSlotProvider backupSlotProvider) { 53 super(backupSlotProvider); 54 } 55 56 @Override 57 public boolean canInlineConstant(Constant con) { 58 if (con instanceof JavaConstant) { 59 JavaConstant c = (JavaConstant) con; 60 switch (c.getJavaKind()) { 61 case Long: 62 return NumUtil.isInt(c.asLong()); 63 case Object: 64 return c.isNull(); 65 default: 66 return true; 67 } 68 } 69 return false; 70 } 71 72 @Override 73 public AMD64LIRInstruction createMove(AllocatableValue dst, Value src) { 74 if (src instanceof AMD64AddressValue) { 75 return new LeaOp(dst, (AMD64AddressValue) src); 76 } else if (isConstantValue(src)) { 77 return createLoad(dst, asConstant(src)); 78 } else if (isRegister(src) || isStackSlotValue(dst)) { 79 return new MoveFromRegOp((AMD64Kind) dst.getPlatformKind(), dst, (AllocatableValue) src); 80 } else { 81 return new MoveToRegOp((AMD64Kind) dst.getPlatformKind(), dst, (AllocatableValue) src); 82 } 83 } 84 85 @Override 86 public AMD64LIRInstruction createStackMove(AllocatableValue result, AllocatableValue input, Register scratchRegister, AllocatableValue backupSlot) { 87 return new AMD64StackMove(result, input, scratchRegister, backupSlot); 88 } 89 90 @Override 91 public AMD64LIRInstruction createLoad(AllocatableValue dst, Constant src) { 92 if (src instanceof JavaConstant) { 93 return new MoveFromConstOp(dst, (JavaConstant) src); 94 } else if (src instanceof DataPointerConstant) { 95 return new LeaDataOp(dst, (DataPointerConstant) src); 96 } else { 97 throw GraalError.shouldNotReachHere(String.format("unsupported constant: %s", src)); 98 } 99 } 100 }