/*
* Copyright (c) 2010, 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
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* questions.
*/
package com.sun.c1x.ir;
import com.oracle.max.criutils.*;
import com.sun.c1x.value.*;
import com.sun.cri.ci.*;
/**
* Records debug info at the current code location.
*/
public final class Infopoint extends Instruction {
public static enum Op { SAFEPOINT_POLL, HERE, INFO, UNCOMMON_TRAP }
public final FrameState state;
public final Op op;
/**
* Creates a new Infopoint instance.
* @param state the debug info at this instruction
*/
public Infopoint(Op op, FrameState state) {
super(op == Op.HERE ? CiKind.Long : CiKind.Void);
this.op = op;
this.state = state;
setFlag(Flag.LiveSideEffect); // ensure this instruction is not eliminated
if (op == Op.SAFEPOINT_POLL) {
setFlag(Value.Flag.IsSafepointPoll);
}
}
@Override
public void accept(ValueVisitor v) {
v.visitInfopoint(this);
}
@Override
public FrameState stateBefore() {
return state;
}
@Override
public void print(LogStream out) {
out.print(op.name());
}
}