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8358592: Assert in Assembler::ptest due to missing SSE42 support

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Reviewed-by: kvn
This commit is contained in:
Guanqiang Han 2025-07-16 05:44:24 +00:00 committed by SendaoYan
parent bdd37b0e5e
commit e1b2229b0b
2 changed files with 49 additions and 31 deletions
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41
src/hotspot/cpu/x86/vm_version_x86.cpp
View File

@ -1477,16 +1477,6 @@ void VM_Version::get_processor_features() {
UseUnalignedLoadStores = true; // use movdqu on newest ZX cpus
}
}
if (supports_sse4_2()) {
if (FLAG_IS_DEFAULT(UseSSE42Intrinsics)) {
FLAG_SET_DEFAULT(UseSSE42Intrinsics, true);
}
} else {
if (UseSSE42Intrinsics && !FLAG_IS_DEFAULT(UseAESIntrinsics)) {
warning("SSE4.2 intrinsics require SSE4.2 instructions or higher. Intrinsics will be disabled.");
}
FLAG_SET_DEFAULT(UseSSE42Intrinsics, false);
}
}
if (FLAG_IS_DEFAULT(AllocatePrefetchInstr) && supports_3dnow_prefetch()) {
@ -1531,16 +1521,6 @@ void VM_Version::get_processor_features() {
UseXmmI2D = false;
}
}
if (supports_sse4_2()) {
if (FLAG_IS_DEFAULT(UseSSE42Intrinsics)) {
FLAG_SET_DEFAULT(UseSSE42Intrinsics, true);
}
} else {
if (UseSSE42Intrinsics && !FLAG_IS_DEFAULT(UseAESIntrinsics)) {
warning("SSE4.2 intrinsics require SSE4.2 instructions or higher. Intrinsics will be disabled.");
}
FLAG_SET_DEFAULT(UseSSE42Intrinsics, false);
}
// some defaults for AMD family 15h
if (cpu_family() == 0x15) {
@ -1629,16 +1609,6 @@ void VM_Version::get_processor_features() {
UseUnalignedLoadStores = true; // use movdqu on newest Intel cpus
}
}
if (supports_sse4_2()) {
if (FLAG_IS_DEFAULT(UseSSE42Intrinsics)) {
FLAG_SET_DEFAULT(UseSSE42Intrinsics, true);
}
} else {
if (UseSSE42Intrinsics && !FLAG_IS_DEFAULT(UseAESIntrinsics)) {
warning("SSE4.2 intrinsics require SSE4.2 instructions or higher. Intrinsics will be disabled.");
}
FLAG_SET_DEFAULT(UseSSE42Intrinsics, false);
}
}
if (is_atom_family() || is_knights_family()) {
#ifdef COMPILER2
@ -1699,7 +1669,16 @@ void VM_Version::get_processor_features() {
}
}
#endif
if (supports_sse4_2()) {
if (FLAG_IS_DEFAULT(UseSSE42Intrinsics)) {
FLAG_SET_DEFAULT(UseSSE42Intrinsics, true);
}
} else {
if (UseSSE42Intrinsics && !FLAG_IS_DEFAULT(UseSSE42Intrinsics)) {
warning("SSE4.2 intrinsics require SSE4.2 instructions or higher. Intrinsics will be disabled.");
}
FLAG_SET_DEFAULT(UseSSE42Intrinsics, false);
}
if (UseSSE42Intrinsics) {
if (FLAG_IS_DEFAULT(UseVectorizedMismatchIntrinsic)) {
UseVectorizedMismatchIntrinsic = true;

39
test/hotspot/jtreg/compiler/arguments/TestUseSSE42IntrinsicsWithLowLevelSSE.java Normal file
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@ -0,0 +1,39 @@
/*
* 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 8358592
* @summary Regression test for -XX:+UseSSE42Intrinsics -XX:UseSSE=1 crash
* @requires os.arch=="amd64" | os.arch=="x86_64"
* @requires vm.debug
* @run main/othervm -XX:+UseSSE42Intrinsics -XX:UseSSE=1 compiler.arguments.TestUseSSE42IntrinsicsWithLowLevelSSE
*/
package compiler.arguments;
public class TestUseSSE42IntrinsicsWithLowLevelSSE {
public static void main(String[] args) {
System.out.println("passed");
}
}