Mercurial > hg > truffle

annotate graal/GraalCompiler/src/com/sun/c1x/ir/StateSplit.java @ 2610:39aa89baa165

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
cleanup: FrameState copy methods, ImmutableFrameState
author Lukas Stadler <lukas.stadler@jku.at>
date Fri, 06 May 2011 13:03:33 +0200
parents f1bc67c2d453
children 3558ca7088c0
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
1 /*
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
2 * Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
4 *
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
7 * published by the Free Software Foundation.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
8 *
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
13 * accompanied this code).
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
14 *
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
18 *
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
21 * questions.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
22 */
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
23 package com.sun.c1x.ir;
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
24
2592
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
25 import com.oracle.graal.graph.*;
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
26 import com.sun.c1x.value.*;
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
27 import com.sun.cri.ci.*;
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
28
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
29 /**
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
30 * The {@code StateSplit} class is the abstract base class of all instructions
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
31 * that store an immutable copy of the frame state.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
32 */
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
33 public abstract class StateSplit extends Instruction {
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
34
2594
092e628ddd5d changed Constant and Convert, more StoreIndexed changes
Lukas Stadler <lukas.stadler@jku.at>
parents: 2592
diff changeset
35 private static final int INPUT_COUNT = 0;
092e628ddd5d changed Constant and Convert, more StoreIndexed changes
Lukas Stadler <lukas.stadler@jku.at>
parents: 2592
diff changeset
36 private static final int SUCCESSOR_COUNT = 0;
092e628ddd5d changed Constant and Convert, more StoreIndexed changes
Lukas Stadler <lukas.stadler@jku.at>
parents: 2592
diff changeset
37
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
38 private FrameState stateBefore;
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
39
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
40 /**
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
41 * Creates a new state split with the specified value type.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
42 * @param kind the type of the value that this instruction produces
2592
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
43 * @param inputCount
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
44 * @param successorCount
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
45 * @param graph
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
46 */
2592
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
47 public StateSplit(CiKind kind, FrameState stateBefore, int inputCount, int successorCount, Graph graph) {
2594
092e628ddd5d changed Constant and Convert, more StoreIndexed changes
Lukas Stadler <lukas.stadler@jku.at>
parents: 2592
diff changeset
48 super(kind, inputCount + INPUT_COUNT, successorCount + SUCCESSOR_COUNT, graph);
2592
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
49 this.stateBefore = stateBefore;
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
50 }
fec99fc30af1 checkstyle fixes, updated AccessArray + subclasses
Lukas Stadler <lukas.stadler@jku.at>
parents: 2565
diff changeset
51
2543
c58a301eb2d7 Clean up on canTrap.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2509
diff changeset
52 @Override
c58a301eb2d7 Clean up on canTrap.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2509
diff changeset
53 public boolean canTrap() {
c58a301eb2d7 Clean up on canTrap.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2509
diff changeset
54 return stateBefore != null;
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
55 }
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
56
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
57 /**
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
58 * Records the state of this instruction before it is executed.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
59 *
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
60 * @param stateBefore the state
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
61 */
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
62 public final void setStateBefore(FrameState stateBefore) {
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
63 assert this.stateBefore == null;
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
64 this.stateBefore = stateBefore;
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
65 }
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
66
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
67 /**
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
68 * Gets the state for this instruction.
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
69 * @return the state
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
70 */
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
71 @Override
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
72 public final FrameState stateBefore() {
2543
c58a301eb2d7 Clean up on canTrap.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents: 2509
diff changeset
73 return stateBefore;
2507
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
74 }
9ec15d6914ca Pull over of compiler from maxine repository.
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
diff changeset
75 }