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6757316: load_constant() produces a wrong long constant, with high a low words swapped

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Reviewed-by: rasbold, jrose, kvn
This commit is contained in:
Tom Rodriguez 2008-12-12 19:54:46 -08:00
parent 552c37000d
commit 40a81c63b8
2 changed files with 45 additions and 2 deletions
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4
hotspot/src/share/vm/c1/c1_LIRGenerator.cpp
View File

@ -1210,8 +1210,8 @@ LIR_Opr LIRGenerator::load_constant(LIR_Const* c) {
break;
case T_LONG:
case T_DOUBLE:
if (c->as_jint_hi_bits() != other->as_jint_lo_bits()) continue;
if (c->as_jint_lo_bits() != other->as_jint_hi_bits()) continue;
if (c->as_jint_hi_bits() != other->as_jint_hi_bits()) continue;
if (c->as_jint_lo_bits() != other->as_jint_lo_bits()) continue;
break;
case T_OBJECT:
if (c->as_jobject() != other->as_jobject()) continue;

43
hotspot/test/compiler/6757316/Test6757316.java Normal file
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@ -0,0 +1,43 @@
/*
* Copyright 2008 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/**
* @test
* @bug 6757316
* @summary load_constant() produces a wrong long constant, with high a low words swapped
* @run main/othervm -Xcomp Test6757316
*/
public class Test6757316 {
public static void main(String[] args) {
long[] arr = {
0x11111111aaaaaaaaL,
0xaaaaaaaa11111111L,
0x11111111aaaaaaaaL,
0xaaaaaaaa11111111L
};
if (arr[0] == arr[1]) {
throw new InternalError();
}
}
}