Mercurial > hg > graal-compiler
view graal/GraalCompiler/src/com/sun/c1x/lir/LIRBranch.java @ 2546:e1b3db8031ee
Removed liveness marking.
author | Thomas Wuerthinger <thomas@wuerthinger.net> |
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date | Wed, 27 Apr 2011 21:54:31 +0200 |
parents | 16b9a8b5ad39 |
children | 0ea5f12e873a |
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/* * 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.asm.*; import com.sun.c1x.ir.*; import com.sun.cri.ci.*; /** * @author Marcelo Cintra * @author Thomas Wuerthinger * */ public class LIRBranch extends LIRInstruction { private Condition cond; private CiKind kind; private Label label; /** * The target block of this branch. */ private BlockBegin block; /** * This is the unordered block for a float branch. */ private BlockBegin unorderedBlock; public LIRBranch(Condition cond, Label label) { this(cond, label, null); } /** * Creates a new LIRBranch instruction. * * @param cond the branch condition * @param label target label * */ public LIRBranch(Condition cond, Label label, LIRDebugInfo info) { super(LIROpcode.Branch, CiValue.IllegalValue, info, false); this.cond = cond; this.label = label; } /** * Creates a new LIRBranch instruction. * * @param cond * @param kind * @param block * */ public LIRBranch(Condition cond, CiKind kind, BlockBegin block) { super(LIROpcode.Branch, CiValue.IllegalValue, null, false); this.cond = cond; this.kind = kind; this.label = block.label(); this.block = block; this.unorderedBlock = null; } public LIRBranch(Condition cond, CiKind kind, BlockBegin block, BlockBegin ublock) { super(LIROpcode.CondFloatBranch, CiValue.IllegalValue, null, false); this.cond = cond; this.kind = kind; this.label = block.label(); this.block = block; this.unorderedBlock = ublock; } /** * @return the condition */ public Condition cond() { return cond; } public Label label() { return label; } public BlockBegin block() { return block; } public BlockBegin unorderedBlock() { return unorderedBlock; } public void changeBlock(BlockBegin b) { assert block != null : "must have old block"; assert block.label() == label() : "must be equal"; this.block = b; this.label = b.label(); } public void changeUblock(BlockBegin b) { assert unorderedBlock != null : "must have old block"; this.unorderedBlock = b; } public void negateCondition() { cond = cond.negate(); } @Override public void emitCode(LIRAssembler masm) { masm.emitBranch(this); } @Override public String operationString(OperandFormatter operandFmt) { StringBuilder buf = new StringBuilder(cond().operator).append(' '); if (block() != null) { buf.append("[B").append(block.blockID).append(']'); } else if (label().isBound()) { buf.append("[label:0x").append(Integer.toHexString(label().position())).append(']'); } else { buf.append("[label:??]"); } if (unorderedBlock() != null) { buf.append("unordered: [B").append(unorderedBlock().blockID).append(']'); } return buf.toString(); } public void substitute(BlockBegin oldBlock, BlockBegin newBlock) { if (block == oldBlock) { block = newBlock; LIRInstruction instr = newBlock.lir().instructionsList().get(0); assert instr instanceof LIRLabel : "first instruction of block must be label"; label = ((LIRLabel) instr).label(); } if (unorderedBlock == oldBlock) { unorderedBlock = newBlock; } } }