Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/lir/LIRTableSwitch.java @ 2509:16b9a8b5ad39
Renamings Runtime=>GraalRuntime and Compiler=>GraalCompiler
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
---|---|
date | Wed, 27 Apr 2011 11:50:44 +0200 |
parents | graal/Compiler/src/com/sun/c1x/lir/LIRTableSwitch.java@9ec15d6914ca |
children | c1ce2a53d6c3 |
line wrap: on
line source
/* * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.c1x.lir; import com.sun.c1x.ir.*; import com.sun.cri.ci.*; /** * @author Doug Simon */ public class LIRTableSwitch extends LIRInstruction { public BlockBegin defaultTarget; public final BlockBegin[] targets; public final int lowKey; public LIRTableSwitch(CiValue value, int lowKey, BlockBegin defaultTarget, BlockBegin[] targets) { super(LIROpcode.TableSwitch, CiValue.IllegalValue, null, false, 1, 0, value); this.lowKey = lowKey; this.targets = targets; this.defaultTarget = defaultTarget; } @Override public void emitCode(LIRAssembler masm) { masm.emitTableSwitch(this); } /** * @return the input value to this switch */ public CiValue value() { return operand(0); } @Override public String operationString(OperandFormatter operandFmt) { StringBuilder buf = new StringBuilder(super.operationString(operandFmt)); buf.append("\ndefault: [B").append(defaultTarget.blockID).append(']'); int key = lowKey; for (BlockBegin b : targets) { buf.append("\ncase ").append(key).append(": [B").append(b.blockID).append(']'); key++; } return buf.toString(); } private BlockBegin substitute(BlockBegin block, BlockBegin oldBlock, BlockBegin newBlock) { if (block == oldBlock) { LIRInstruction instr = newBlock.lir().instructionsList().get(0); assert instr instanceof LIRLabel : "first instruction of block must be label"; return newBlock; } return oldBlock; } public void substitute(BlockBegin oldBlock, BlockBegin newBlock) { if (substitute(defaultTarget, oldBlock, newBlock) == newBlock) { defaultTarget = newBlock; } for (int i = 0; i < targets.length; i++) { if (substitute(targets[i], oldBlock, newBlock) == newBlock) { targets[i] = newBlock; } } } }