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