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.sparc; 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.sparc.SPARCAssembler; 31 import org.graalvm.compiler.core.common.type.DataPointerConstant; 32 import org.graalvm.compiler.core.sparc.SPARCLIRGenerator.ConstantTableBaseProvider; 33 import org.graalvm.compiler.debug.GraalError; 34 import org.graalvm.compiler.lir.LIRInstruction; 35 import org.graalvm.compiler.lir.gen.LIRGeneratorTool.MoveFactory; 36 import org.graalvm.compiler.lir.sparc.SPARCAddressValue; 37 import org.graalvm.compiler.lir.sparc.SPARCMove; 38 import org.graalvm.compiler.lir.sparc.SPARCMove.LoadAddressOp; 39 import org.graalvm.compiler.lir.sparc.SPARCMove.Move; 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 SPARCMoveFactory implements MoveFactory { 47 48 protected final ConstantTableBaseProvider constantTableBaseProvider; 49 50 public SPARCMoveFactory(ConstantTableBaseProvider constantTableBaseProvider) { 51 this.constantTableBaseProvider = constantTableBaseProvider; 52 } 53 54 @Override 55 public LIRInstruction createMove(AllocatableValue dst, Value src) { 56 boolean srcIsSlot = isStackSlotValue(src); 57 boolean dstIsSlot = isStackSlotValue(dst); 58 if (isConstantValue(src)) { 59 return createLoad(dst, asConstant(src)); 60 } else if (src instanceof SPARCAddressValue) { 61 return new LoadAddressOp(dst, (SPARCAddressValue) src); 62 } else { 63 assert src instanceof AllocatableValue; 64 if (srcIsSlot && dstIsSlot) { 65 throw GraalError.shouldNotReachHere(src.getClass() + " " + dst.getClass()); 66 } else { 67 return new Move(dst, (AllocatableValue) src); 68 } 69 } 70 } 71 72 @Override 73 public LIRInstruction createStackMove(AllocatableValue result, AllocatableValue input) { 74 return new SPARCMove.Move(result, input); 75 } 76 77 @Override 78 public LIRInstruction createLoad(AllocatableValue dst, Constant src) { 79 if (src instanceof JavaConstant) { 80 JavaConstant javaConstant = (JavaConstant) src; 81 if (canInlineConstant(javaConstant)) { 82 return new SPARCMove.LoadInlineConstant(javaConstant, dst); 83 } else { 84 return new SPARCMove.LoadConstantFromTable(javaConstant, constantTableBaseProvider.getConstantTableBase(), dst); 85 } 86 } else if (src instanceof DataPointerConstant) { 87 return new SPARCMove.LoadDataAddressOp(dst, (DataPointerConstant) src); 88 } else { 89 throw GraalError.shouldNotReachHere(src.getClass().toString()); 90 } 91 } 92 93 @Override 94 public boolean canInlineConstant(JavaConstant c) { 95 switch (c.getJavaKind()) { 96 case Boolean: 97 case Byte: 98 case Char: 99 case Short: 100 case Int: 101 return SPARCAssembler.isSimm13(c.asInt()); 102 case Long: 103 return SPARCAssembler.isSimm13(c.asLong()); 104 case Object: 105 return c.isNull(); 106 default: 107 return false; 108 } 109 } 110 111 @Override 112 public boolean allowConstantToStackMove(Constant value) { 113 return false; 114 } 115 116 }