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.sparc; 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.sparc.SPARCAssembler; 33 import org.graalvm.compiler.core.common.type.DataPointerConstant; 34 import org.graalvm.compiler.core.sparc.SPARCLIRGenerator.ConstantTableBaseProvider; 35 import org.graalvm.compiler.debug.GraalError; 36 import org.graalvm.compiler.lir.LIRInstruction; 37 import org.graalvm.compiler.lir.gen.LIRGeneratorTool.MoveFactory; 38 import org.graalvm.compiler.lir.sparc.SPARCAddressValue; 39 import org.graalvm.compiler.lir.sparc.SPARCMove; 40 import org.graalvm.compiler.lir.sparc.SPARCMove.LoadAddressOp; 41 import org.graalvm.compiler.lir.sparc.SPARCMove.Move; 42 43 import jdk.vm.ci.meta.AllocatableValue; 44 import jdk.vm.ci.meta.Constant; 45 import jdk.vm.ci.meta.JavaConstant; 46 import jdk.vm.ci.meta.Value; 47 48 public class SPARCMoveFactory implements MoveFactory { 49 50 protected final ConstantTableBaseProvider constantTableBaseProvider; 51 52 public SPARCMoveFactory(ConstantTableBaseProvider constantTableBaseProvider) { 53 this.constantTableBaseProvider = constantTableBaseProvider; 54 } 55 56 @Override 57 public LIRInstruction createMove(AllocatableValue dst, Value src) { 58 boolean srcIsSlot = isStackSlotValue(src); 59 boolean dstIsSlot = isStackSlotValue(dst); 60 if (isConstantValue(src)) { 61 return createLoad(dst, asConstant(src)); 62 } else if (src instanceof SPARCAddressValue) { 63 return new LoadAddressOp(dst, (SPARCAddressValue) src); 64 } else { 65 assert src instanceof AllocatableValue; 66 if (srcIsSlot && dstIsSlot) { 67 throw GraalError.shouldNotReachHere(src.getClass() + " " + dst.getClass()); 68 } else { 69 return new Move(dst, (AllocatableValue) src); 70 } 71 } 72 } 73 74 @Override 75 public LIRInstruction createStackMove(AllocatableValue result, AllocatableValue input) { 76 return new SPARCMove.Move(result, input); 77 } 78 79 @Override 80 public LIRInstruction createLoad(AllocatableValue dst, Constant src) { 81 if (src instanceof JavaConstant) { 82 JavaConstant javaConstant = (JavaConstant) src; 83 if (canInlineConstant(javaConstant)) { 84 return new SPARCMove.LoadInlineConstant(javaConstant, dst); 85 } else { 86 return new SPARCMove.LoadConstantFromTable(javaConstant, constantTableBaseProvider.getConstantTableBase(), dst); 87 } 88 } else if (src instanceof DataPointerConstant) { 89 return new SPARCMove.LoadDataAddressOp(dst, (DataPointerConstant) src); 90 } else { 91 throw GraalError.shouldNotReachHere(src.getClass().toString()); 92 } 93 } 94 95 @Override 96 public LIRInstruction createStackLoad(AllocatableValue result, Constant input) { 97 if (input instanceof DataPointerConstant) { 98 throw GraalError.shouldNotReachHere("unsupported constant for stack load: " + input); 99 } 100 return createLoad(result, input); 101 } 102 103 @Override 104 public boolean canInlineConstant(Constant con) { 105 if (con instanceof JavaConstant) { 106 JavaConstant c = (JavaConstant) con; 107 switch (c.getJavaKind()) { 108 case Boolean: 109 case Byte: 110 case Char: 111 case Short: 112 case Int: 113 return SPARCAssembler.isSimm13(c.asInt()); 114 case Long: 115 return SPARCAssembler.isSimm13(c.asLong()); 116 case Object: 117 return c.isNull(); 118 default: 119 return false; 120 } 121 } 122 return false; 123 } 124 125 @Override 126 public boolean allowConstantToStackMove(Constant value) { 127 return false; 128 } 129 130 }