1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*
* Copyright (c) 2024, 2025, Red Hat and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package compiler.c2;
import compiler.lib.ir_framework.*;
import compiler.lib.ir_framework.Test;
import java.util.Random;
/*
* @test
* @bug 8332442
* @summary Test that DIV and MOD nodes are converted into DIVMOD where possible
* @library /test/lib /
* @run driver compiler.c2.TestDivModNodes
*/
public class TestDivModNodes {
private static final Random RANDOM = AbstractInfo.getRandom();
private static int intQuotient;
private static int intRemainder;
private static long longQuotient;
private static long longRemainder;
public static void main(String[] args) {
TestFramework.runWithFlags("-XX:-UseDivMod");
TestFramework.runWithFlags("-XX:+UseDivMod");
}
private static int nextNonZeroInt() {
int i;
do {
i = RANDOM.nextInt();
} while (i == 0);
return i;
}
private static long nextNonZeroLong() {
long i;
do {
i = RANDOM.nextLong();
} while (i == 0);
return i;
}
@Test
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatform = {"x64", "true"},
counts = {IRNode.DIV_MOD_I, "1"},
failOn = {IRNode.DIV_I, IRNode.MOD_I})
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatformOr = {"aarch64", "true", "riscv64", "true"},
counts = {IRNode.DIV_I, "1", IRNode.MUL_I, "1", IRNode.SUB_I, "1"},
failOn = {IRNode.MOD_I})
@IR(applyIf = {"UseDivMod", "false"},
counts = {IRNode.DIV_I, "1", IRNode.MOD_I, "1"})
private static void testSignedIntDivMod(int dividend, int divisor) {
intQuotient = dividend / divisor;
intRemainder = dividend % divisor;
}
@Run(test = "testSignedIntDivMod")
private static void runSignedIntDivMod() {
int dividend = RANDOM.nextInt();
int divisor = nextNonZeroInt();
testSignedIntDivMod(dividend, divisor);
verifyResult(dividend, divisor,
intQuotient, intRemainder,
dividend / divisor, dividend % divisor);
}
@Test
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatform = {"x64", "true"},
counts = {IRNode.DIV_MOD_L, "1"},
failOn = {IRNode.DIV_L, IRNode.MOD_L})
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatformOr = {"aarch64", "true", "riscv64", "true"},
counts = {IRNode.DIV_L, "1", IRNode.MUL_L, "1", IRNode.SUB_L, "1"},
failOn = {IRNode.MOD_L})
@IR(applyIf = {"UseDivMod", "false"},
counts = {IRNode.DIV_L, "1", IRNode.MOD_L, "1"})
private static void testSignedLongDivMod(long dividend, long divisor) {
longQuotient = dividend / divisor;
longRemainder = dividend % divisor;
}
@Run(test = "testSignedLongDivMod")
private static void runSignedLongDivMod() {
long dividend = RANDOM.nextLong();
long divisor = nextNonZeroLong();
testSignedLongDivMod(dividend, divisor);
verifyResult(dividend, divisor,
longQuotient, longRemainder,
dividend / divisor, dividend % divisor);
}
@Test
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatform = {"x64", "true"},
counts = {IRNode.UDIV_MOD_I, "1"},
failOn = {IRNode.UDIV_I, IRNode.UMOD_I})
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatformOr = {"aarch64", "true", "riscv64", "true"},
counts = {IRNode.UDIV_I, "1", IRNode.MUL_I, "1", IRNode.SUB_I, "1"},
failOn = {IRNode.UMOD_I})
@IR(applyIf = {"UseDivMod", "false"},
counts = {IRNode.UDIV_I, "1", IRNode.UMOD_I, "1"})
private static void testUnsignedIntDivMod(int dividend, int divisor) {
intQuotient = Integer.divideUnsigned(dividend, divisor); // intrinsified on x86
intRemainder = Integer.remainderUnsigned(dividend, divisor); // intrinsified on x86
}
@Run(test = "testUnsignedIntDivMod")
private static void runUnsignedIntDivMod() {
int dividend = RANDOM.nextInt();
int divisor = nextNonZeroInt();
testUnsignedIntDivMod(dividend, divisor);
verifyResult(dividend, divisor,
intQuotient, intRemainder,
Integer.divideUnsigned(dividend, divisor), Integer.remainderUnsigned(dividend, divisor));
}
@Test
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatform = {"x64", "true"},
counts = {IRNode.UDIV_MOD_L, "1"},
failOn = {IRNode.UDIV_L, IRNode.UMOD_L})
@IR(applyIf = {"UseDivMod", "true"}, applyIfPlatformOr = {"aarch64", "true", "riscv64", "true"},
counts = {IRNode.UDIV_L, "1", IRNode.MUL_L, "1", IRNode.SUB_L, "1"},
failOn = {IRNode.MOD_L})
@IR(applyIf = {"UseDivMod", "false"},
counts = {IRNode.UDIV_L, "1", IRNode.UMOD_L, "1"})
private static void testUnsignedLongDivMod(long dividend, long divisor) {
longQuotient = Long.divideUnsigned(dividend, divisor); // intrinsified on x86
longRemainder = Long.remainderUnsigned(dividend, divisor); // intrinsified on x86
}
@Run(test = "testUnsignedLongDivMod")
private static void runUnsignedLongDivMod() {
long dividend = RANDOM.nextLong();
long divisor = nextNonZeroLong();
testUnsignedLongDivMod(dividend, divisor);
verifyResult(dividend, divisor,
longQuotient, longRemainder,
Long.divideUnsigned(dividend, divisor), Long.remainderUnsigned(dividend, divisor));
}
private static <T extends Number> void verifyResult(T dividend, T divisor,
T quotient, T remainder,
T expectedQ, T expectedR) {
if (!expectedQ.equals(quotient) || !expectedR.equals(remainder)) {
throw new AssertionError(String.format("Mismatched result from %d / %d. " +
"Expected: quotient = %d remainder = %d, " +
"but got: quotient = %d remainder = %d",
dividend, divisor, expectedQ, expectedR, quotient, remainder));
}
}
}
|
