--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/GraalCompiler/src/com/sun/c1x/lir/LIRBranch.java	Wed Apr 27 11:50:44 2011 +0200
@@ -0,0 +1,162 @@
+/*
+ * 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;
+        }
+    }
+}