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comparison graal/com.oracle.max.graal.compiler/src/com/sun/c1x/lir/LIRDebugInfo.java @ 2872:0341b6424579

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Project renaming.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Wed, 08 Jun 2011 08:42:25 +0200
parents graal/GraalCompiler/src/com/sun/c1x/lir/LIRDebugInfo.java@1cd59ca9ac86
children
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2871:d704eb526603 2872:0341b6424579
1 /*
2 * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.sun.c1x.lir;
24
25 import com.sun.c1x.*;
26 import com.sun.c1x.ir.*;
27 import com.sun.c1x.value.*;
28 import com.sun.cri.ci.*;
29
30 /**
31 * This class represents debugging and deoptimization information attached to a LIR instruction.
32 */
33 public class LIRDebugInfo {
34
35 public abstract static class ValueLocator {
36 public abstract CiValue getLocation(Value value);
37 }
38
39 public final FrameState state;
40 private LIRBlock exceptionEdge;
41 public CiDebugInfo debugInfo;
42
43 public LIRDebugInfo(FrameState state) {
44 assert state != null;
45 this.state = state;
46 }
47
48 public LIRBlock exceptionEdge() {
49 return exceptionEdge;
50 }
51
52 public void setExceptionEdge(LIRBlock exceptionEdge) {
53 this.exceptionEdge = exceptionEdge;
54 }
55
56 private LIRDebugInfo(LIRDebugInfo info) {
57 this.state = info.state;
58 this.exceptionEdge = info.exceptionEdge;
59 }
60
61 public LIRDebugInfo copy() {
62 return new LIRDebugInfo(this);
63 }
64
65 public void setOop(CiValue location, C1XCompilation compilation, CiBitMap frameRefMap, CiBitMap regRefMap) {
66 CiTarget target = compilation.target;
67 if (location.isAddress()) {
68 CiAddress stackLocation = (CiAddress) location;
69 assert stackLocation.index.isIllegal();
70 if (stackLocation.base == CiRegister.Frame.asValue()) {
71 int offset = stackLocation.displacement;
72 assert offset % target.wordSize == 0 : "must be aligned";
73 int stackMapIndex = offset / target.wordSize;
74 setBit(frameRefMap, stackMapIndex);
75 }
76 } else if (location.isStackSlot()) {
77 CiStackSlot stackSlot = (CiStackSlot) location;
78 assert !stackSlot.inCallerFrame();
79 assert target.spillSlotSize == target.wordSize;
80 setBit(frameRefMap, stackSlot.index());
81 } else {
82 assert location.isRegister() : "objects can only be in a register";
83 CiRegisterValue registerLocation = (CiRegisterValue) location;
84 int reg = registerLocation.reg.number;
85 assert reg >= 0 : "object cannot be in non-object register " + registerLocation.reg;
86 assert reg < target.arch.registerReferenceMapBitCount;
87 setBit(regRefMap, reg);
88 }
89 }
90
91 public CiDebugInfo debugInfo() {
92 assert debugInfo != null : "debug info not allocated yet";
93 return debugInfo;
94 }
95
96 public boolean hasDebugInfo() {
97 return debugInfo != null;
98 }
99
100 public static void setBit(CiBitMap refMap, int bit) {
101 assert !refMap.get(bit) : "Ref map entry " + bit + " is already set.";
102 refMap.set(bit);
103 }
104
105 @Override
106 public String toString() {
107 return state.toString();
108 }
109 }