Mercurial > hg > truffle

annotate graal/com.oracle.graal.phases.common/src/com/oracle/graal/phases/common/ConvertDeoptimizeToGuardPhase.java @ 6526:ee651c726397

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
split phases out of graal.phases project into graal.phases.common project
author Doug Simon <doug.simon@oracle.com>
date Sun, 07 Oct 2012 14:27:50 +0200
parents graal/com.oracle.graal.phases/src/com/oracle/graal/phases/phases/ConvertDeoptimizeToGuardPhase.java@2c913b643422
children 4dc9e468c8b0 b6eec91d81fb
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4548
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
1 /*
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
4 *
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
7 * published by the Free Software Foundation.
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
8 *
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
13 * accompanied this code).
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
14 *
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
18 *
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
21 * questions.
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
22 */
6526
ee651c726397 split phases out of graal.phases project into graal.phases.common project
Doug Simon <doug.simon@oracle.com>
parents: 6525
diff changeset
23 package com.oracle.graal.phases.common;
4548
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
24
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
25 import java.util.*;
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
26
5060
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
27 import com.oracle.graal.debug.*;
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
28 import com.oracle.graal.graph.*;
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
29 import com.oracle.graal.nodes.*;
4ed4295ce15f Update import statements.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 5059
diff changeset
30 import com.oracle.graal.nodes.util.*;
6526
ee651c726397 split phases out of graal.phases project into graal.phases.common project
Doug Simon <doug.simon@oracle.com>
parents: 6525
diff changeset
31 import com.oracle.graal.phases.*;
4548
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
32
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
33 public class ConvertDeoptimizeToGuardPhase extends Phase {
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
34
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
35 private static BeginNode findBeginNode(Node startNode) {
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
36 Node n = startNode;
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
37 while (true) {
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
38 if (n instanceof BeginNode) {
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
39 return (BeginNode) n;
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
40 } else {
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
41 n = n.predecessor();
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
42 }
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
43 }
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
44 }
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
45
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
46 @Override
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
47 protected void run(final StructuredGraph graph) {
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
48 if (graph.getNodes(DeoptimizeNode.class).isEmpty()) {
4548
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
49 return;
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
50 }
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
51
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
52 for (DeoptimizeNode d : graph.getNodes(DeoptimizeNode.class)) {
5095
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
53 visitDeoptBegin(findBeginNode(d), d, graph);
4548
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
54 }
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
55
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
56 new DeadCodeEliminationPhase().apply(graph);
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
57 }
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
58
5095
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
59 private void visitDeoptBegin(BeginNode deoptBegin, DeoptimizeNode deopt, StructuredGraph graph) {
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
60 if (deoptBegin instanceof MergeNode) {
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
61 MergeNode mergeNode = (MergeNode) deoptBegin;
5095
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
62 Debug.log("Visiting %s followed by %s", mergeNode, deopt);
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
63 List<EndNode> ends = mergeNode.forwardEnds().snapshot();
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
64 for (EndNode end : ends) {
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
65 if (!end.isDeleted()) {
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
66 BeginNode beginNode = findBeginNode(end);
5095
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
67 if (!(beginNode instanceof MergeNode)) {
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
68 visitDeoptBegin(beginNode, deopt, graph);
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
69 }
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
70 }
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
71 }
5095
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
72 if (mergeNode.isDeleted()) {
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
73 if (!deopt.isDeleted()) {
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
74 Debug.log("Merge deleted, deopt moved to %s", findBeginNode(deopt));
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
75 visitDeoptBegin(findBeginNode(deopt), deopt, graph);
57ae0b1cc74a Fix possible endless recursion in ConvertDeoptimizeToGuardPhase.
Andreas Woess <andreas.woess@jku.at>
parents: 5061
diff changeset
76 }
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
77 }
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
78 } else if (deoptBegin.predecessor() instanceof IfNode) {
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
79 IfNode ifNode = (IfNode) deoptBegin.predecessor();
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
80 BeginNode otherBegin = ifNode.trueSuccessor();
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
81 BooleanNode conditionNode = ifNode.compare();
5425
0364a2a874b8 changes towards a canonical representation of comparisons:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5160
diff changeset
82 boolean negated = false;
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
83 if (deoptBegin == ifNode.trueSuccessor()) {
5425
0364a2a874b8 changes towards a canonical representation of comparisons:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5160
diff changeset
84 negated = true;
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
85 otherBegin = ifNode.falseSuccessor();
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
86 }
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
87 BeginNode ifBlockBegin = findBeginNode(ifNode);
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
88 Debug.log("Converting %s on %-5s branch of %s to guard for remaining branch %s. IfBegin=%s", deopt, deoptBegin == ifNode.trueSuccessor() ? "true" : "false", ifNode, otherBegin, ifBlockBegin);
5425
0364a2a874b8 changes towards a canonical representation of comparisons:
Lukas Stadler <lukas.stadler@jku.at>
parents: 5160
diff changeset
89 FixedGuardNode guard = graph.add(new FixedGuardNode(conditionNode, deopt.reason(), deopt.action(), negated, deopt.leafGraphId()));
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
90 otherBegin.replaceAtUsages(ifBlockBegin);
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
91 FixedNode next = otherBegin.next();
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
92 otherBegin.setNext(null);
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
93 guard.setNext(next);
5487
9743ae819f73 Move virtual chain help methods from SuperBlock to GraphUtil
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5425
diff changeset
94 ifNode.replaceAtPredecessor(guard);
4682
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
95 GraphUtil.killCFG(ifNode);
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
96 }
7cb57ac24ab8 Better ConvertDeoptimizeToGuardPhase (experimental).
Andreas Woess <andreas.woess@jku.at>
parents: 4548
diff changeset
97 }
4548
f55914bc1d67 Added experimental ConvertDeoptimizeToGuardPhase.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
98 }