Mercurial > hg > graal-compiler

annotate graal/GraalCompiler/src/com/sun/c1x/ir/Merge.java @ 2800:e3a0630a1dab

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
added code for computing dominators.
author Thomas Wuerthinger <thomas@wuerthinger.net>
date Fri, 27 May 2011 14:58:55 +0200
parents 0fd105ff30f1
children 2af109bec0c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2795
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
1 /*
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
4 *
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
7 * published by the Free Software Foundation.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
8 *
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
13 * accompanied this code).
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
14 *
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
18 *
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
21 * questions.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
22 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
23 package com.sun.c1x.ir;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
24
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
25 import com.oracle.graal.graph.*;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
26 import com.sun.c1x.debug.*;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
27 import com.sun.c1x.util.*;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
28 import com.sun.c1x.value.*;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
29 import com.sun.cri.ci.*;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
30
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
31 /**
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
32 * Denotes the beginning of a basic block, and holds information
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
33 * about the basic block, including the successor and
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
34 * predecessor blocks, exception handlers, liveness information, etc.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
35 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
36 public final class Merge extends StateSplit {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
37
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
38 private static final int INPUT_COUNT = 0;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
39
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
40 private static final int SUCCESSOR_COUNT = 0;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
41
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
42 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
43 protected int inputCount() {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
44 return super.inputCount() + INPUT_COUNT;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
45 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
46
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
47 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
48 protected int successorCount() {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
49 return super.successorCount() + SUCCESSOR_COUNT;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
50 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
51
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
52 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
53 public boolean needsStateAfter() {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
54 return false;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
55 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
56
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
57 public final boolean isLoopHeader;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
58
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
59 /**
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
60 * Index of bytecode that generated this node when appended in a basic block.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
61 * Negative values indicate special cases.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
62 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
63 private int bci;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
64
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
65 /**
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
66 * Constructs a new Merge at the specified bytecode index.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
67 * @param bci the bytecode index of the start
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
68 * @param blockID the ID of the block
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
69 * @param graph
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
70 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
71 public Merge(int bci, boolean isLoopHeader, Graph graph) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
72 super(CiKind.Illegal, INPUT_COUNT, SUCCESSOR_COUNT, graph);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
73 this.bci = bci;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
74 this.isLoopHeader = isLoopHeader;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
75 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
76
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
77 /**
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
78 * Gets the bytecode index of this instruction.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
79 * @return the bytecode index of this instruction
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
80 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
81 public int bci() {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
82 return bci;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
83 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
84
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
85 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
86 public void accept(ValueVisitor v) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
87 v.visitMerge(this);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
88 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
89
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
90 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
91 public String toString() {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
92 StringBuilder builder = new StringBuilder();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
93 builder.append("merge #");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
94 builder.append(id());
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
95 builder.append(" [");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
96
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
97 builder.append("]");
2800
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
98
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
99 builder.append(" -> ");
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
100 boolean hasSucc = false;
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
101 for (Node s : this.successors()) {
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
102 if (hasSucc) {
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
103 builder.append(", ");
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
104 }
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
105 builder.append("#");
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
106 if (s != null) {
2795
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
107 builder.append(s.id());
2800
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
108 } else {
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
109 builder.append("null");
2795
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
110 }
2800
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
111 hasSucc = true;
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
112 }
e3a0630a1dab added code for computing dominators.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2795
diff changeset
113
2795
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
114 return builder.toString();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
115 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
116
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
117 public void printWithoutPhis(LogStream out) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
118 // print block id
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
119 out.print("B").print(id()).print(" ");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
120
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
121 // print flags
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
122 StringBuilder sb = new StringBuilder(8);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
123 if (sb.length() != 0) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
124 out.print('(').print(sb.toString()).print(')');
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
125 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
126
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
127 // print block bci range
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
128 out.print('[').print(-1).print(", ").print(-1).print(']');
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
129
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
130 // print block successors
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
131 //if (end != null && end.blockSuccessors().size() > 0) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
132 out.print(" .");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
133 for (Node successor : this.successors()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
134 if (successor instanceof Value) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
135 out.print((Value) successor);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
136 } else {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
137 out.print(successor.toString());
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
138 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
139 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
140 //}
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
141
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
142 // print predecessors
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
143 if (!blockPredecessors().isEmpty()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
144 out.print(" pred:");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
145 for (Instruction pred : blockPredecessors()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
146 out.print(pred.block());
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
147 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
148 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
149 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
150
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
151 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
152 public void print(LogStream out) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
153
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
154 printWithoutPhis(out);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
155
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
156 // print phi functions
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
157 boolean hasPhisInLocals = false;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
158 boolean hasPhisOnStack = false;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
159
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
160 //if (end() != null && end().stateAfter() != null) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
161 FrameState state = stateBefore();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
162
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
163 int i = 0;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
164 while (!hasPhisOnStack && i < state.stackSize()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
165 Value value = state.stackAt(i);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
166 hasPhisOnStack = isPhiAtBlock(value);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
167 if (value != null && !value.isIllegal()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
168 i += value.kind.sizeInSlots();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
169 } else {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
170 i++;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
171 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
172 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
173
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
174 for (i = 0; !hasPhisInLocals && i < state.localsSize();) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
175 Value value = state.localAt(i);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
176 hasPhisInLocals = isPhiAtBlock(value);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
177 // also ignore illegal HiWords
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
178 if (value != null && !value.isIllegal()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
179 i += value.kind.sizeInSlots();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
180 } else {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
181 i++;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
182 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
183 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
184 //}
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
185
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
186 // print values in locals
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
187 if (hasPhisInLocals) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
188 out.println();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
189 out.println("Locals:");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
190
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
191 int j = 0;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
192 while (j < state.localsSize()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
193 Value value = state.localAt(j);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
194 if (value != null) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
195 out.println(stateString(j, value));
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
196 // also ignore illegal HiWords
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
197 j += value.isIllegal() ? 1 : value.kind.sizeInSlots();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
198 } else {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
199 j++;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
200 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
201 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
202 out.println();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
203 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
204
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
205 // print values on stack
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
206 if (hasPhisOnStack) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
207 out.println();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
208 out.println("Stack:");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
209 int j = 0;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
210 while (j < stateBefore().stackSize()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
211 Value value = stateBefore().stackAt(j);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
212 if (value != null) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
213 out.println(stateString(j, value));
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
214 j += value.kind.sizeInSlots();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
215 } else {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
216 j++;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
217 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
218 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
219 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
220
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
221 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
222
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
223 /**
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
224 * Determines if a given instruction is a phi whose {@linkplain Phi#block() join block} is a given block.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
225 *
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
226 * @param value the instruction to test
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
227 * @param block the block that may be the join block of {@code value} if {@code value} is a phi
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
228 * @return {@code true} if {@code value} is a phi and its join block is {@code block}
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
229 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
230 private boolean isPhiAtBlock(Value value) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
231 return value instanceof Phi && ((Phi) value).block() == this;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
232 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
233
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
234
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
235 /**
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
236 * Formats a given instruction as a value in a {@linkplain FrameState frame state}. If the instruction is a phi defined at a given
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
237 * block, its {@linkplain Phi#valueCount() inputs} are appended to the returned string.
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
238 *
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
239 * @param index the index of the value in the frame state
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
240 * @param value the frame state value
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
241 * @param block if {@code value} is a phi, then its inputs are formatted if {@code block} is its
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
242 * {@linkplain Phi#block() join point}
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
243 * @return the instruction representation as a string
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
244 */
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
245 public String stateString(int index, Value value) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
246 StringBuilder sb = new StringBuilder(30);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
247 sb.append(String.format("%2d %s", index, Util.valueString(value)));
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
248 if (value instanceof Phi) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
249 Phi phi = (Phi) value;
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
250 // print phi operands
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
251 if (phi.block() == this) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
252 sb.append(" [");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
253 for (int j = 0; j < phi.valueCount(); j++) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
254 sb.append(' ');
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
255 Value operand = phi.valueAt(j);
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
256 if (operand != null) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
257 sb.append(Util.valueString(operand));
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
258 } else {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
259 sb.append("NULL");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
260 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
261 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
262 sb.append("] ");
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
263 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
264 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
265 if (value != null && value.hasSubst()) {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
266 sb.append("alias ").append(Util.valueString(value.subst()));
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
267 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
268 return sb.toString();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
269 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
270
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
271 @Override
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
272 public String shortName() {
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
273 return "Merge #" + id();
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
274 }
0fd105ff30f1 Add merge
Gilles Duboscq <gilles.duboscq@oracle.com>
parents:
diff changeset
275 }