Mercurial > hg > truffle

annotate graal/com.oracle.graal.nodes/src/com/oracle/graal/nodes/type/StampTool.java @ 13999:f2b300c6e621

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Refactor Stamp hierarchy.
author Roland Schatz <roland.schatz@oracle.com>
date Thu, 20 Feb 2014 14:42:01 +0100
parents e53aa17b8fdf
children 958c99d0790c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
1 /*
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
4 *
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
7 * published by the Free Software Foundation.
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
8 *
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
13 * accompanied this code).
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
14 *
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
18 *
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
20 * or visit www.oracle.com if you need additional information or have any
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
21 * questions.
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
22 */
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
23 package com.oracle.graal.nodes.type;
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
24
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
25 import java.util.*;
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
26
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
27 import com.oracle.graal.api.meta.*;
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
28
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
29 /**
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
30 * Helper class that is used to keep all stamp-related operations in one place.
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
31 */
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
32 public class StampTool {
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
33
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
34 private static Kind joinKind(Kind a, Kind b) {
11387
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
35 if (a == b) {
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
36 return a;
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
37 }
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
38 return Kind.Illegal;
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
39 }
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
40
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
41 /**
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
42 * Create an {@link IllegalStamp} from two incompatible input stamps, joining the kind of the
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
43 * input stamps if possible.
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
44 */
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
45 private static Stamp joinIllegal(Stamp a, Stamp b) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
46 IllegalStamp ia = (IllegalStamp) a.illegal();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
47 IllegalStamp ib = (IllegalStamp) b.illegal();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
48 return StampFactory.illegal(joinKind(ia.kind(), ib.kind()));
11387
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
49 }
9088d13767f3 Keep a kind in the illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11357
diff changeset
50
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
51 public static Stamp negate(Stamp stamp) {
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
52 if (stamp instanceof IntegerStamp) {
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
53 IntegerStamp integerStamp = (IntegerStamp) stamp;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
54 int bits = integerStamp.getBits();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
55 if (integerStamp.lowerBound() != IntegerStamp.defaultMinValue(bits, false)) {
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
56 // TODO(ls) check if the mask calculation is correct...
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
57 return StampFactory.forInteger(bits, false, -integerStamp.upperBound(), -integerStamp.lowerBound());
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
58 }
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
59 } else if (stamp instanceof FloatStamp) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
60 FloatStamp floatStamp = (FloatStamp) stamp;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
61 return new FloatStamp(floatStamp.getBits(), -floatStamp.upperBound(), -floatStamp.lowerBound(), floatStamp.isNonNaN());
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
62 }
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
63
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
64 return stamp.unrestricted();
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
65 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
66
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
67 public static Stamp not(Stamp stamp) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
68 if (stamp instanceof IntegerStamp) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
69 IntegerStamp integerStamp = (IntegerStamp) stamp;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
70 int bits = integerStamp.getBits();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
71 long defaultMask = IntegerStamp.defaultMask(bits);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
72 return new IntegerStamp(bits, integerStamp.isUnsigned(), ~integerStamp.upperBound(), ~integerStamp.lowerBound(), (~integerStamp.upMask()) & defaultMask, (~integerStamp.downMask()) &
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
73 defaultMask);
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
74 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
75 return stamp.unrestricted();
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
76 }
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
77
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
78 public static Stamp meet(Collection<? extends StampProvider> values) {
7530
5e3d1a68664e applied mx eclipseformat to all Java files
Doug Simon <doug.simon@oracle.com>
parents: 7489
diff changeset
79 Iterator<? extends StampProvider> iterator = values.iterator();
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
80 if (iterator.hasNext()) {
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
81 Stamp stamp = iterator.next().stamp();
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
82 while (iterator.hasNext()) {
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
83 stamp = stamp.meet(iterator.next().stamp());
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
84 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
85 return stamp;
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
86 } else {
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
87 return StampFactory.forVoid();
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
88 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
89 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
90
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
91 public static Stamp add(Stamp stamp1, Stamp stamp2) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
92 if (stamp1 instanceof IntegerStamp && stamp2 instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
93 return add((IntegerStamp) stamp1, (IntegerStamp) stamp2);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
94 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
95 return joinIllegal(stamp1, stamp2);
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
96 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
97
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
98 private static long carryBits(long x, long y) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
99 return (x + y) ^ x ^ y;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
100 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
101
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
102 public static Stamp sub(Stamp stamp1, Stamp stamp2) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
103 return add(stamp1, StampTool.negate(stamp2));
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
104 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
105
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
106 public static Stamp div(Stamp stamp1, Stamp stamp2) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
107 if (stamp1 instanceof IntegerStamp && stamp2 instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
108 return div((IntegerStamp) stamp1, (IntegerStamp) stamp2);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
109 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
110 return joinIllegal(stamp1, stamp2);
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
111 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
112
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
113 public static Stamp div(IntegerStamp stamp1, IntegerStamp stamp2) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
114 assert stamp1.getBits() == stamp2.getBits() && stamp1.isUnsigned() == stamp2.isUnsigned();
6299
1ed726759f65 Add helper methods to IntegerStamp for sign, use them
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 5657
diff changeset
115 if (stamp2.isStrictlyPositive()) {
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
116 long lowerBound = stamp1.lowerBound() / stamp2.lowerBound();
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
117 long upperBound = stamp1.upperBound() / stamp2.lowerBound();
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
118 return StampFactory.forInteger(stamp1.getBits(), stamp1.isUnsigned(), lowerBound, upperBound);
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
119 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
120 return stamp1.unrestricted();
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
121 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
122
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
123 private static boolean addOverflowsPositively(long x, long y, int bits, boolean unsigned) {
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
124 long result = x + y;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
125 if (bits == 64) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
126 if (unsigned) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
127 return ((x | y) & ~result) < 0;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
128 } else {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
129 return (~x & ~y & result) < 0;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
130 }
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
131 } else {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
132 return result > IntegerStamp.defaultMaxValue(bits, unsigned);
12562
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
133 }
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
134 }
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
135
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
136 private static boolean addOverflowsNegatively(long x, long y, int bits, boolean unsigned) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
137 if (unsigned) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
138 return false;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
139 }
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
140
12562
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
141 long result = x + y;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
142 if (bits == 64) {
12562
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
143 return (x & y & ~result) < 0;
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
144 } else {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
145 return result < IntegerStamp.defaultMinValue(bits, unsigned);
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
146 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
147 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
148
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
149 public static IntegerStamp add(IntegerStamp stamp1, IntegerStamp stamp2) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
150 int bits = stamp1.getBits();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
151 boolean unsigned = stamp1.isUnsigned();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
152 assert bits == stamp2.getBits() && unsigned == stamp2.isUnsigned();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
153
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
154 if (stamp1.isUnrestricted()) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
155 return stamp1;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
156 } else if (stamp2.isUnrestricted()) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
157 return stamp2;
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
158 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
159 long defaultMask = IntegerStamp.defaultMask(bits);
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
160 long variableBits = (stamp1.downMask() ^ stamp1.upMask()) | (stamp2.downMask() ^ stamp2.upMask());
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
161 long variableBitsWithCarry = variableBits | (carryBits(stamp1.downMask(), stamp2.downMask()) ^ carryBits(stamp1.upMask(), stamp2.upMask()));
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
162 long newDownMask = (stamp1.downMask() + stamp2.downMask()) & ~variableBitsWithCarry;
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
163 long newUpMask = (stamp1.downMask() + stamp2.downMask()) | variableBitsWithCarry;
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
164
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
165 newDownMask &= defaultMask;
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
166 newUpMask &= defaultMask;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
167
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
168 long lowerBound;
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
169 long upperBound;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
170 boolean lowerOverflowsPositively = addOverflowsPositively(stamp1.lowerBound(), stamp2.lowerBound(), bits, unsigned);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
171 boolean upperOverflowsPositively = addOverflowsPositively(stamp1.upperBound(), stamp2.upperBound(), bits, unsigned);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
172 boolean lowerOverflowsNegatively = addOverflowsNegatively(stamp1.lowerBound(), stamp2.lowerBound(), bits, unsigned);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
173 boolean upperOverflowsNegatively = addOverflowsNegatively(stamp1.upperBound(), stamp2.upperBound(), bits, unsigned);
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
174 if ((lowerOverflowsNegatively && !upperOverflowsNegatively) || (!lowerOverflowsPositively && upperOverflowsPositively)) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
175 lowerBound = IntegerStamp.defaultMinValue(bits, unsigned);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
176 upperBound = IntegerStamp.defaultMaxValue(bits, unsigned);
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
177 } else {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
178 lowerBound = (stamp1.lowerBound() + stamp2.lowerBound()) & defaultMask;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
179 upperBound = (stamp1.upperBound() + stamp2.upperBound()) & defaultMask;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
180 if (!unsigned) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
181 lowerBound = signExtend(lowerBound, bits);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
182 upperBound = signExtend(upperBound, bits);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
183 }
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
184 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
185 IntegerStamp limit = StampFactory.forInteger(bits, unsigned, lowerBound, upperBound);
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
186 newUpMask &= limit.upMask();
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
187 upperBound &= newUpMask;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
188 if (!unsigned) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
189 upperBound = signExtend(upperBound, bits);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
190 }
12677
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
191 newDownMask |= limit.downMask();
e53aa17b8fdf Fix some more problems in StampTool.add and simplify the overflow condition
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12656
diff changeset
192 lowerBound |= newDownMask;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
193 return new IntegerStamp(bits, unsigned, lowerBound, upperBound, newDownMask, newUpMask);
10045
a4e7a7dc74f3 better stamps for OrNodes
Lukas Stadler <lukas.stadler@jku.at>
parents: 7530
diff changeset
194 }
a4e7a7dc74f3 better stamps for OrNodes
Lukas Stadler <lukas.stadler@jku.at>
parents: 7530
diff changeset
195
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
196 public static Stamp sub(IntegerStamp stamp1, IntegerStamp stamp2) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
197 if (stamp1.isUnrestricted() || stamp2.isUnrestricted()) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
198 return stamp1.unrestricted();
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
199 }
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
200 return add(stamp1, (IntegerStamp) StampTool.negate(stamp2));
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
201 }
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
202
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
203 private static Stamp stampForMask(int bits, long downMask, long upMask) {
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
204 long lowerBound;
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
205 long upperBound;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
206 if (((upMask >>> (bits - 1)) & 1) == 0) {
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
207 lowerBound = downMask;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
208 upperBound = upMask;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
209 } else if (((downMask >>> (bits - 1)) & 1) == 1) {
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
210 lowerBound = downMask;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
211 upperBound = upMask;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
212 } else {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
213 lowerBound = downMask | (-1L << (bits - 1));
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
214 upperBound = IntegerStamp.defaultMaxValue(bits, false) & upMask;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
215 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
216 return new IntegerStamp(bits, false, lowerBound, upperBound, downMask, upMask);
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
217 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
218
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
219 public static Stamp and(Stamp stamp1, Stamp stamp2) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
220 if (stamp1 instanceof IntegerStamp && stamp2 instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
221 return and((IntegerStamp) stamp1, (IntegerStamp) stamp2);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
222 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
223 return joinIllegal(stamp1, stamp2);
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
224 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
225
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
226 public static Stamp and(IntegerStamp stamp1, IntegerStamp stamp2) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
227 assert stamp1.getBits() == stamp2.getBits();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
228 return stampForMask(stamp1.getBits(), stamp1.downMask() & stamp2.downMask(), stamp1.upMask() & stamp2.upMask());
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
229 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
230
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
231 public static Stamp or(Stamp stamp1, Stamp stamp2) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
232 if (stamp1 instanceof IntegerStamp && stamp2 instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
233 return or((IntegerStamp) stamp1, (IntegerStamp) stamp2);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
234 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
235 return joinIllegal(stamp1, stamp2);
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
236 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
237
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
238 public static Stamp or(IntegerStamp stamp1, IntegerStamp stamp2) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
239 assert stamp1.getBits() == stamp2.getBits();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
240 return stampForMask(stamp1.getBits(), stamp1.downMask() | stamp2.downMask(), stamp1.upMask() | stamp2.upMask());
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
241 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
242
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
243 public static Stamp xor(Stamp stamp1, Stamp stamp2) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
244 if (stamp1 instanceof IntegerStamp && stamp2 instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
245 return xor((IntegerStamp) stamp1, (IntegerStamp) stamp2);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
246 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
247 return joinIllegal(stamp1, stamp2);
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
248 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
249
7489
8461d937ac18 Better for Load/Read stamps for non-stack kinds
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 7302
diff changeset
250 public static Stamp xor(IntegerStamp stamp1, IntegerStamp stamp2) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
251 assert stamp1.getBits() == stamp2.getBits();
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
252 long variableBits = (stamp1.downMask() ^ stamp1.upMask()) | (stamp2.downMask() ^ stamp2.upMask());
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
253 long newDownMask = (stamp1.downMask() ^ stamp2.downMask()) & ~variableBits;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
254 long newUpMask = (stamp1.downMask() ^ stamp2.downMask()) | variableBits;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
255 return stampForMask(stamp1.getBits(), newDownMask, newUpMask);
7489
8461d937ac18 Better for Load/Read stamps for non-stack kinds
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 7302
diff changeset
256 }
8461d937ac18 Better for Load/Read stamps for non-stack kinds
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 7302
diff changeset
257
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
258 public static Stamp unsignedRightShift(Stamp value, Stamp shift) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
259 if (value instanceof IntegerStamp && shift instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
260 return unsignedRightShift((IntegerStamp) value, (IntegerStamp) shift);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
261 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
262 return value.illegal();
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
263 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
264
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
265 public static Stamp unsignedRightShift(IntegerStamp value, IntegerStamp shift) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
266 int bits = value.getBits();
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
267 if (shift.lowerBound() == shift.upperBound()) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
268 long shiftMask = bits > 32 ? 0x3FL : 0x1FL;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
269 long shiftCount = shift.lowerBound() & shiftMask;
7302
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
270 if (shiftCount != 0) {
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
271 long lowerBound;
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
272 long upperBound;
12538
ae36dae46d50 Fix StampTool.unsignedRightShift
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11387
diff changeset
273 long downMask = value.downMask() >>> shiftCount;
12562
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
274 long upMask = value.upMask() >>> shiftCount;
7302
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
275 if (value.lowerBound() < 0) {
12538
ae36dae46d50 Fix StampTool.unsignedRightShift
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 11387
diff changeset
276 lowerBound = downMask;
12562
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
277 upperBound = upMask;
7302
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
278 } else {
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
279 lowerBound = value.lowerBound() >>> shiftCount;
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
280 upperBound = value.upperBound() >>> shiftCount;
f9f40467383e Fixes for new Word type
Christian Wimmer <christian.wimmer@oracle.com>
parents: 6539
diff changeset
281 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
282 return new IntegerStamp(bits, value.isUnsigned(), lowerBound, upperBound, downMask, upMask);
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
283 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
284 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
285 long mask = IntegerStamp.upMaskFor(bits, value.lowerBound(), value.upperBound());
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
286 return stampForMask(bits, 0, mask);
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
287 }
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
288
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
289 public static Stamp leftShift(Stamp value, Stamp shift) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
290 if (value instanceof IntegerStamp && shift instanceof IntegerStamp) {
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
291 return leftShift((IntegerStamp) value, (IntegerStamp) shift);
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
292 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
293 return value.illegal();
11265
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
294 }
ef6915cf1e59 Add illegal stamp
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 10815
diff changeset
295
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
296 public static Stamp leftShift(IntegerStamp value, IntegerStamp shift) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
297 int bits = value.getBits();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
298 long defaultMask = IntegerStamp.defaultMask(bits);
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
299 if (value.upMask() == 0) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
300 return value;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
301 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
302 int shiftBits = bits > 32 ? 6 : 5;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
303 long shiftMask = bits > 32 ? 0x3FL : 0x1FL;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
304 if ((shift.lowerBound() >>> shiftBits) == (shift.upperBound() >>> shiftBits)) {
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
305 long downMask = defaultMask;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
306 long upMask = 0;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
307 for (long i = shift.lowerBound(); i <= shift.upperBound(); i++) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
308 if (shift.contains(i)) {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
309 downMask &= value.downMask() << (i & shiftMask);
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
310 upMask |= value.upMask() << (i & shiftMask);
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
311 }
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
312 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
313 Stamp result = stampForMask(bits, downMask, upMask & defaultMask);
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
314 return result;
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
315 }
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
316 return value.unrestricted();
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
317 }
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
318
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
319 public static Stamp intToLong(IntegerStamp intStamp) {
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
320 long downMask = intStamp.downMask();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
321 long upMask = intStamp.upMask();
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
322 if (!intStamp.isUnsigned()) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
323 downMask = signExtend(downMask, intStamp.getBits());
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
324 upMask = signExtend(upMask, intStamp.getBits());
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
325 }
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
326 return new IntegerStamp(64, intStamp.isUnsigned(), intStamp.lowerBound(), intStamp.upperBound(), downMask, upMask);
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
327 }
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
328
12656
9334392ed279 Refactor ConvertNode.
Roland Schatz <roland.schatz@oracle.com>
parents: 12562
diff changeset
329 public static IntegerStamp narrowingKindConversion(IntegerStamp fromStamp, Kind toKind) {
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
330 assert toKind == Kind.Byte || toKind == Kind.Char || toKind == Kind.Short || toKind == Kind.Int;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
331 final long upperBound;
6328
6e66d97a16ae Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 6313
diff changeset
332 if (fromStamp.lowerBound() < toKind.getMinValue()) {
6e66d97a16ae Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 6313
diff changeset
333 upperBound = toKind.getMaxValue();
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
334 } else {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
335 upperBound = saturate(fromStamp.upperBound(), toKind);
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
336 }
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
337 final long lowerBound;
6328
6e66d97a16ae Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 6313
diff changeset
338 if (fromStamp.upperBound() > toKind.getMaxValue()) {
6e66d97a16ae Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 6313
diff changeset
339 lowerBound = toKind.getMinValue();
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
340 } else {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
341 lowerBound = saturate(fromStamp.lowerBound(), toKind);
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
342 }
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
343
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
344 long defaultMask = IntegerStamp.defaultMask(toKind.getBitCount());
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
345 long intMask = IntegerStamp.defaultMask(32);
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
346 long newUpMask = signExtend(fromStamp.upMask() & defaultMask, toKind) & intMask;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
347 long newDownMask = signExtend(fromStamp.downMask() & defaultMask, toKind) & intMask;
13999
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
348 return new IntegerStamp(toKind.getStackKind().getBitCount(), false, (int) ((lowerBound | newDownMask) & newUpMask), (int) ((upperBound | newDownMask) & newUpMask), newDownMask, newUpMask);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
349 }
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
350
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
351 private static long signExtend(long value, int bits) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
352 if (bits < 64 && (value >>> (bits - 1) & 1) == 1) {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
353 return value | (-1L << bits);
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
354 } else {
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
355 return value;
f2b300c6e621 Refactor Stamp hierarchy.
Roland Schatz <roland.schatz@oracle.com>
parents: 12677
diff changeset
356 }
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
357 }
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
358
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
359 private static long signExtend(long value, Kind valueKind) {
12562
035474349265 Serveral fixes to StampTool.add and some tests
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 12538
diff changeset
360 if (valueKind != Kind.Char && valueKind != Kind.Long && (value >>> (valueKind.getBitCount() - 1) & 1) == 1) {
11352
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
361 return value | (-1L << valueKind.getBitCount());
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
362 } else {
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
363 return value;
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
364 }
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
365 }
8185c119d731 "always set" bit mask on IntegerStamps
Lukas Stadler <lukas.stadler@jku.at>
parents: 11265
diff changeset
366
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
367 public static long saturate(long v, Kind kind) {
6328
6e66d97a16ae Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 6313
diff changeset
368 long max = kind.getMaxValue();
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
369 if (v > max) {
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
370 return max;
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
371 }
6328
6e66d97a16ae Clean up Kind class.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents: 6313
diff changeset
372 long min = kind.getMinValue();
6313
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
373 if (v < min) {
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
374 return min;
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
375 }
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
376 return v;
7ac010ae8c97 Add inferStamp for a number of ConvertNode's operations
Gilles Duboscq <duboscq@ssw.jku.at>
parents: 6299
diff changeset
377 }
5657
d71eb56d6bb0 new stamp inference in CanonicalizerPhase, IntegerStamp.mask
Lukas Stadler <lukas.stadler@jku.at>
parents:
diff changeset
378 }