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 25 26 package org.graalvm.compiler.core.aarch64; 27 28 import static org.graalvm.compiler.lir.LIRValueUtil.asConstant; 29 import static org.graalvm.compiler.lir.LIRValueUtil.isConstantValue; 30 import static org.graalvm.compiler.lir.LIRValueUtil.isStackSlotValue; 31 32 import org.graalvm.compiler.asm.aarch64.AArch64MacroAssembler; 33 import org.graalvm.compiler.core.common.type.DataPointerConstant; 34 import org.graalvm.compiler.debug.GraalError; 35 import org.graalvm.compiler.lir.LIRInstruction; 36 import org.graalvm.compiler.lir.aarch64.AArch64AddressValue; 37 import org.graalvm.compiler.lir.aarch64.AArch64Move; 38 import org.graalvm.compiler.lir.aarch64.AArch64Move.LoadAddressOp; 39 import org.graalvm.compiler.lir.gen.LIRGeneratorTool.MoveFactory; 40 41 import jdk.vm.ci.meta.AllocatableValue; 42 import jdk.vm.ci.meta.Constant; 43 import jdk.vm.ci.meta.JavaConstant; 44 import jdk.vm.ci.meta.Value; 45 46 public class AArch64MoveFactory implements MoveFactory { 47 48 @Override 49 public LIRInstruction createMove(AllocatableValue dst, Value src) { 50 boolean srcIsSlot = isStackSlotValue(src); 51 boolean dstIsSlot = isStackSlotValue(dst); 52 if (isConstantValue(src)) { 53 return createLoad(dst, asConstant(src)); 54 } else if (src instanceof AArch64AddressValue) { 55 return new LoadAddressOp(dst, (AArch64AddressValue) src); 56 } else { 57 assert src instanceof AllocatableValue; 58 if (srcIsSlot && dstIsSlot) { 59 throw GraalError.shouldNotReachHere(src.getClass() + " " + dst.getClass()); 60 } else { 61 return new AArch64Move.Move(dst, (AllocatableValue) src); 62 } 63 } 64 } 65 66 @Override 67 public LIRInstruction createStackMove(AllocatableValue result, AllocatableValue input) { 68 return new AArch64Move.Move(result, input); 69 } 70 71 @Override 72 public LIRInstruction createLoad(AllocatableValue dst, Constant src) { 73 if (src instanceof JavaConstant) { 74 JavaConstant javaConstant = (JavaConstant) src; 75 if (canInlineConstant(javaConstant)) { 76 return new AArch64Move.LoadInlineConstant(javaConstant, dst); 77 } else { 78 // return new AArch64Move.LoadConstantFromTable(javaConstant, 79 // constantTableBaseProvider.getConstantTableBase(), dst); 80 return new AArch64Move.LoadInlineConstant(javaConstant, dst); 81 } 82 } else if (src instanceof DataPointerConstant) { 83 return new AArch64Move.LoadDataOp(dst, (DataPointerConstant) src); 84 } else { 85 // throw GraalError.shouldNotReachHere(src.getClass().toString()); 86 throw GraalError.unimplemented(); 87 } 88 } 89 90 @Override 91 public LIRInstruction createStackLoad(AllocatableValue result, Constant input) { 92 return createLoad(result, input); 93 } 94 95 @Override 96 public boolean canInlineConstant(Constant con) { 97 if (con instanceof JavaConstant) { 98 JavaConstant c = (JavaConstant) con; 99 switch (c.getJavaKind()) { 100 case Boolean: 101 case Byte: 102 case Char: 103 case Short: 104 case Int: 105 return AArch64MacroAssembler.isMovableImmediate(c.asInt()); 106 case Long: 107 return AArch64MacroAssembler.isMovableImmediate(c.asLong()); 108 case Object: 109 return c.isNull(); 110 default: 111 return false; 112 } 113 } 114 return false; 115 } 116 117 @Override 118 public boolean allowConstantToStackMove(Constant value) { 119 return false; 120 } 121 122 }