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8388186: java -XX:UseSSE=2 -XX:+EnableX86ECoreOpts -version crashes with assert(UseAVX > 0) failed: requires some form of AVX

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Reviewed-by: asmehra, kvn
This commit is contained in:
Guanqiang Han 2026-07-17 02:14:36 +00:00 committed by David Holmes
parent 24a1532719
commit b7b29c7082
2 changed files with 58 additions and 1 deletions
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2
src/hotspot/cpu/x86/vm_version_x86.cpp
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@ -1343,7 +1343,7 @@ void VM_Version::get_processor_features() {
}
if (UseSHA && ((supports_evex() && supports_avx512vlbw()) ||
(EnableX86ECoreOpts && !supports_hybrid()))) {
(supports_avx2() && EnableX86ECoreOpts && !supports_hybrid()))) {
if (FLAG_IS_DEFAULT(UseSHA3Intrinsics)) {
FLAG_SET_DEFAULT(UseSHA3Intrinsics, true);
}

57
test/hotspot/jtreg/compiler/cpuflags/TestEnableX86ECoreOptsWithAVX2Disabled.java Normal file
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@ -0,0 +1,57 @@
/*
* Copyright (c) 2026, 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 8388186
* @summary Test for VM crash with -XX:+EnableX86ECoreOpts and UseAVX < 2.
* @requires vm.flagless
* @requires os.arch == "amd64" | os.arch == "x86_64"
* @library /test/lib
* @run driver ${test.main.class}
*/
package compiler.cpuflags;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestEnableX86ECoreOptsWithAVX2Disabled {
static final String[] OPTIONS = {
"-XX:UseSSE=2",
"-XX:UseSSE=3",
"-XX:UseAVX=0",
"-XX:UseAVX=1"
};
public static void main(String[] args) throws Exception {
for (String option : OPTIONS) {
OutputAnalyzer output = ProcessTools.executeLimitedTestJava(
"-XX:+UnlockDiagnosticVMOptions",
"-XX:+EnableX86ECoreOpts",
option,
"-version");
output.shouldHaveExitValue(0);
}
}
}