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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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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.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/hotspot/jtreg/compiler/vectorapi/VectorMaskCastIdentityTest.java Normal file
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/*
* Copyright (c) 2025, NVIDIA CORPORATION & 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 8356760
* @key randomness
* @library /test/lib /
* @summary Optimize VectorMask.fromLong for all-true/all-false cases
* @modules jdk.incubator.vector
*
* @run driver compiler.vectorapi.VectorMaskCastIdentityTest
*/
package compiler.vectorapi;
import compiler.lib.ir_framework.*;
import java.util.Random;
import jdk.incubator.vector.*;
import jdk.test.lib.Asserts;
import jdk.test.lib.Utils;
public class VectorMaskCastIdentityTest {
private static final boolean[] mr = new boolean[128]; // 128 is large enough
private static final Random rd = Utils.getRandomInstance();
static {
for (int i = 0; i < mr.length; i++) {
mr[i] = rd.nextBoolean();
}
}
@Test
@IR(counts = { IRNode.VECTOR_MASK_CAST, "= 2" }, applyIfCPUFeatureOr = {"asimd", "true", "rvv", "true"})
public static int testTwoCastToDifferentType() {
// The types before and after the two casts are not the same, so the cast cannot be eliminated.
VectorMask<Float> mFloat64 = VectorMask.fromArray(FloatVector.SPECIES_64, mr, 0);
VectorMask<Double> mDouble128 = mFloat64.cast(DoubleVector.SPECIES_128);
VectorMask<Integer> mInt64 = mDouble128.cast(IntVector.SPECIES_64);
return mInt64.trueCount();
}
@Run(test = "testTwoCastToDifferentType")
public static void testTwoCastToDifferentType_runner() {
int count = testTwoCastToDifferentType();
VectorMask<Float> mFloat64 = VectorMask.fromArray(FloatVector.SPECIES_64, mr, 0);
Asserts.assertEquals(count, mFloat64.trueCount());
}
@Test
@IR(counts = { IRNode.VECTOR_MASK_CAST, "= 2" }, applyIfCPUFeatureOr = {"avx2", "true"})
public static int testTwoCastToDifferentType2() {
// The types before and after the two casts are not the same, so the cast cannot be eliminated.
VectorMask<Integer> mInt128 = VectorMask.fromArray(IntVector.SPECIES_128, mr, 0);
VectorMask<Double> mDouble256 = mInt128.cast(DoubleVector.SPECIES_256);
VectorMask<Short> mShort64 = mDouble256.cast(ShortVector.SPECIES_64);
return mShort64.trueCount();
}
@Run(test = "testTwoCastToDifferentType2")
public static void testTwoCastToDifferentType2_runner() {
int count = testTwoCastToDifferentType2();
VectorMask<Integer> mInt128 = VectorMask.fromArray(IntVector.SPECIES_128, mr, 0);
Asserts.assertEquals(count, mInt128.trueCount());
}
@Test
@IR(counts = { IRNode.VECTOR_MASK_CAST, "= 0" }, applyIfCPUFeatureOr = {"avx2", "true", "asimd", "true", "rvv", "true"})
public static int testTwoCastToSameType() {
// The types before and after the two casts are the same, so the cast will be eliminated.
VectorMask<Integer> mInt128 = VectorMask.fromArray(IntVector.SPECIES_128, mr, 0);
VectorMask<Float> mFloat128 = mInt128.cast(FloatVector.SPECIES_128);
VectorMask<Integer> mInt128_2 = mFloat128.cast(IntVector.SPECIES_128);
return mInt128_2.trueCount();
}
@Run(test = "testTwoCastToSameType")
public static void testTwoCastToSameType_runner() {
int count = testTwoCastToSameType();
VectorMask<Integer> mInt128 = VectorMask.fromArray(IntVector.SPECIES_128, mr, 0);
Asserts.assertEquals(count, mInt128.trueCount());
}
@Test
@IR(counts = { IRNode.VECTOR_MASK_CAST, "= 1" }, applyIfCPUFeatureOr = {"avx2", "true", "asimd", "true", "rvv", "true"})
public static int testOneCastToDifferentType() {
// The types before and after the only cast are different, the cast will not be eliminated.
VectorMask<Float> mFloat128 = VectorMask.fromArray(FloatVector.SPECIES_128, mr, 0).not();
VectorMask<Integer> mInt128 = mFloat128.cast(IntVector.SPECIES_128);
return mInt128.trueCount();
}
@Run(test = "testOneCastToDifferentType")
public static void testOneCastToDifferentType_runner() {
int count = testOneCastToDifferentType();
VectorMask<Float> mInt128 = VectorMask.fromArray(FloatVector.SPECIES_128, mr, 0).not();
Asserts.assertEquals(count, mInt128.trueCount());
}
public static void main(String[] args) {
TestFramework testFramework = new TestFramework();
testFramework.setDefaultWarmup(10000)
.addFlags("--add-modules=jdk.incubator.vector")
.start();
}
}