russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
85 lines
No EOL
2.7 KiB
Java
85 lines
No EOL
2.7 KiB
Java
/*
|
||
* Copyright (c) 2025, Oracle 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.
|
||
*/
|
||
|
||
/*
|
||
* @test
|
||
* @bug 8371558
|
||
* @summary An expression of the form "abs(0-x)" should be transformed to "abs(x)".
|
||
* This test ensures that updates to the Sub node’s inputs propagate as
|
||
* expected and that the optimization is not missed.
|
||
* @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:-TieredCompilation -Xcomp
|
||
* -XX:CompileCommand=compileonly,compiler.c2.TestMissingOptAbsZeroMinusX::test*
|
||
* -XX:VerifyIterativeGVN=1110 compiler.c2.TestMissingOptAbsZeroMinusX
|
||
* @run main compiler.c2.TestMissingOptAbsZeroMinusX
|
||
*
|
||
*/
|
||
|
||
package compiler.c2;
|
||
|
||
public class TestMissingOptAbsZeroMinusX {
|
||
static int a;
|
||
static boolean b;
|
||
|
||
public static void main(String[] strArr) {
|
||
// no known reproducer for AbsL
|
||
testAbsI();
|
||
testAbsF();
|
||
testAbsD();
|
||
}
|
||
|
||
static void testAbsI() {
|
||
int d = 4;
|
||
for (int i = 8; i < 133; i += 3) {
|
||
d -= a;
|
||
b = (d != Math.abs(d));
|
||
for (long f = 3; f < 127; f++) {
|
||
for (int e = 1; e < 3; e++) {}
|
||
}
|
||
d = 0;
|
||
}
|
||
}
|
||
|
||
static void testAbsF() {
|
||
float d = 12.3f;
|
||
for (int i = 8; i < 133; i += 3) {
|
||
d -= a;
|
||
b = (d != Math.abs(d));
|
||
for (long f = 3; f < 127; f++) {
|
||
for (int e = 1; e < 3; e++) {}
|
||
}
|
||
d = 0.0f;
|
||
}
|
||
}
|
||
|
||
static void testAbsD() {
|
||
double d = 12.3;
|
||
for (int i = 8; i < 133; i += 3) {
|
||
d -= a;
|
||
b = (d != Math.abs(d));
|
||
for (long f = 3; f < 127; f++) {
|
||
for (int e = 1; e < 3; e++) {}
|
||
}
|
||
d = 0.0;
|
||
}
|
||
}
|
||
} |