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.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.AArch64LIRInstruction; 38 import org.graalvm.compiler.lir.aarch64.AArch64Move; 39 import org.graalvm.compiler.lir.aarch64.AArch64Move.LoadAddressOp; 40 import org.graalvm.compiler.lir.gen.LIRGeneratorTool.MoveFactory; 41 42 import jdk.vm.ci.meta.AllocatableValue; 43 import jdk.vm.ci.meta.Constant; 44 import jdk.vm.ci.meta.JavaConstant; 45 import jdk.vm.ci.meta.Value; 46 47 public class AArch64MoveFactory implements MoveFactory { 48 49 @Override createMove(AllocatableValue dst, Value src)50 public LIRInstruction createMove(AllocatableValue dst, Value src) { 51 boolean srcIsSlot = isStackSlotValue(src); 52 boolean dstIsSlot = isStackSlotValue(dst); 53 if (isConstantValue(src)) { 54 return createLoad(dst, asConstant(src)); 55 } else if (src instanceof AArch64AddressValue) { 56 return new LoadAddressOp(dst, (AArch64AddressValue) src); 57 } else { 58 assert src instanceof AllocatableValue; 59 if (srcIsSlot && dstIsSlot) { 60 throw GraalError.shouldNotReachHere(src.getClass() + " " + dst.getClass()); 61 } else { 62 return new AArch64Move.Move(dst, (AllocatableValue) src); 63 } 64 } 65 } 66 67 @Override createStackMove(AllocatableValue result, AllocatableValue input)68 public LIRInstruction createStackMove(AllocatableValue result, AllocatableValue input) { 69 return new AArch64Move.Move(result, input); 70 } 71 72 @Override createLoad(AllocatableValue dst, Constant src)73 public AArch64LIRInstruction createLoad(AllocatableValue dst, Constant src) { 74 if (src instanceof JavaConstant) { 75 JavaConstant javaConstant = (JavaConstant) src; 76 if (canInlineConstant(javaConstant)) { 77 return new AArch64Move.LoadInlineConstant(javaConstant, dst); 78 } else { 79 // return new AArch64Move.LoadConstantFromTable(javaConstant, 80 // constantTableBaseProvider.getConstantTableBase(), dst); 81 return new AArch64Move.LoadInlineConstant(javaConstant, dst); 82 } 83 } else if (src instanceof DataPointerConstant) { 84 return new AArch64Move.LoadDataOp(dst, (DataPointerConstant) src); 85 } else { 86 // throw GraalError.shouldNotReachHere(src.getClass().toString()); 87 throw GraalError.unimplemented(); 88 } 89 } 90 91 @Override createStackLoad(AllocatableValue result, Constant input)92 public LIRInstruction createStackLoad(AllocatableValue result, Constant input) { 93 return createLoad(result, input); 94 } 95 96 @Override canInlineConstant(Constant con)97 public boolean canInlineConstant(Constant con) { 98 if (con instanceof JavaConstant) { 99 JavaConstant c = (JavaConstant) con; 100 switch (c.getJavaKind()) { 101 case Boolean: 102 case Byte: 103 case Char: 104 case Short: 105 case Int: 106 return AArch64MacroAssembler.isMovableImmediate(c.asInt()); 107 case Long: 108 return AArch64MacroAssembler.isMovableImmediate(c.asLong()); 109 case Object: 110 return c.isNull(); 111 default: 112 return false; 113 } 114 } 115 return false; 116 } 117 118 @Override allowConstantToStackMove(Constant value)119 public boolean allowConstantToStackMove(Constant value) { 120 return false; 121 } 122 123 } 124