Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.lir/src/com/oracle/graal/lir/LIRDebugInfo.java @ 5547:b6617d13ea44
Dropping Ci* prefixes. Some additional renamings in the api.code interface.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 09 Jun 2012 20:10:05 +0200 |
parents | e318468952f5 |
children | 69a8969dbf40 |
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/* * Copyright (c) 2009, 2012, 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.oracle.graal.lir; import static com.oracle.graal.api.code.ValueUtil.*; import java.util.*; import com.oracle.graal.api.code.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.lir.LIRInstruction.OperandFlag; import com.oracle.graal.lir.LIRInstruction.OperandMode; import com.oracle.graal.lir.LIRInstruction.ValueProcedure; /** * This class represents garbage collection and deoptimization information attached to a LIR instruction. */ public class LIRDebugInfo { public final BytecodeFrame topFrame; private final VirtualObject[] virtualObjects; private final List<StackSlot> pointerSlots; public final LabelRef exceptionEdge; private DebugInfo debugInfo; public LIRDebugInfo(BytecodeFrame topFrame, VirtualObject[] virtualObjects, List<StackSlot> pointerSlots, LabelRef exceptionEdge) { this.topFrame = topFrame; this.virtualObjects = virtualObjects; this.pointerSlots = pointerSlots; this.exceptionEdge = exceptionEdge; } public boolean hasDebugInfo() { return debugInfo != null; } public DebugInfo debugInfo() { assert debugInfo != null : "debug info not allocated yet"; return debugInfo; } /** * Iterates the frame state and calls the {@link ValueProcedure} for every variable. * * @param proc The procedure called for variables. */ public void forEachState(ValueProcedure proc) { for (BytecodeFrame cur = topFrame; cur != null; cur = cur.caller()) { processValues(cur.values, proc); } if (virtualObjects != null) { for (VirtualObject obj : virtualObjects) { processValues(obj.values(), proc); } } } /** * We filter out constant and illegal values ourself before calling the procedure, so {@link OperandFlag#Constant} and {@link OperandFlag#Illegal} need not be set. */ private static final EnumSet<OperandFlag> STATE_FLAGS = EnumSet.of(OperandFlag.Register, OperandFlag.Stack); private void processValues(Value[] values, ValueProcedure proc) { for (int i = 0; i < values.length; i++) { Value value = values[i]; if (value instanceof MonitorValue) { MonitorValue monitor = (MonitorValue) value; if (processed(monitor.owner)) { monitor.owner = proc.doValue(monitor.owner, OperandMode.Alive, STATE_FLAGS); } } else if (processed(value)) { values[i] = proc.doValue(value, OperandMode.Alive, STATE_FLAGS); } } } private boolean processed(Value value) { if (isIllegal(value)) { // Ignore dead local variables. return false; } else if (isConstant(value)) { // Ignore constants, the register allocator does not need to see them. return false; } else if (isVirtualObject(value)) { assert Arrays.asList(virtualObjects).contains(value); return false; } else { return true; } } public void finish(BitSet registerRefMap, BitSet frameRefMap, FrameMap frameMap) { debugInfo = new DebugInfo(topFrame, registerRefMap, frameRefMap); // Add additional stack slots for outgoing method parameters. if (pointerSlots != null) { for (StackSlot v : pointerSlots) { frameMap.setReference(v, registerRefMap, frameRefMap); } } } @Override public String toString() { return debugInfo != null ? debugInfo.toString() : topFrame.toString(); } }