1 /* 2 * Copyright (c) 2015, 2015, 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 package org.graalvm.compiler.lir.sparc; 24 25 public interface SPARCLIRInstructionMixin { 26 27 default boolean leavesRegisterWindow() { 28 return false; 29 } 30 31 default SizeEstimate estimateSize() { 32 return getSPARCLIRInstructionStore().estimate; 33 } 34 35 SPARCLIRInstructionMixinStore getSPARCLIRInstructionStore(); 36 37 /** 38 * This class represents a size estimation of a particular LIR instruction. It contains a 39 * pessimistic estimate of emitted SPARC instructions and emitted bytes into the constant 40 * section. 41 */ 42 class SizeEstimate { 43 /** 44 * Cache the first size definition (with just 0 as constant size). 45 */ 46 private static final SizeEstimate[] cache = new SizeEstimate[5]; 47 48 static { 49 for (int i = 0; i < cache.length; i++) { 50 cache[i] = new SizeEstimate(i, 0); 51 } 52 } 53 54 public final int instructionSize; 55 public final int constantSize; 56 57 public SizeEstimate(int instructionSize, int constantSize) { 58 this.instructionSize = instructionSize; 59 this.constantSize = constantSize; 60 } 61 62 public static SizeEstimate create(int instructionSize, int constantSize) { 63 if (constantSize == 0 && instructionSize < cache.length) { 64 return cache[instructionSize]; 65 } else { 66 return new SizeEstimate(instructionSize, constantSize); 67 } 68 } 69 70 public static SizeEstimate create(int instructionSize) { 71 if (instructionSize < cache.length) { 72 return cache[instructionSize]; 73 } else { 74 return new SizeEstimate(instructionSize, 0); 75 } 76 } 77 78 @Override 79 public String toString() { 80 return "SE[i=" + instructionSize + ", c=" + constantSize + "]"; 81 } 82 } 83 84 class SPARCLIRInstructionMixinStore { 85 public final SizeEstimate estimate; 86 public SPARCDelayedControlTransfer delayedControlTransfer = SPARCDelayedControlTransfer.DUMMY; 87 88 public SPARCLIRInstructionMixinStore(SizeEstimate estimate) { 89 this.estimate = estimate; 90 } 91 92 @Override 93 public String toString() { 94 return estimate != null ? estimate.toString() : ""; 95 } 96 } 97 }