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/*
* Copyright (c) 2023, 2024, 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.
*
*/
package compiler.c2.irTests;
import compiler.lib.ir_framework.*;
/*
* @test
* @bug 8309978
* @summary [x64] Fix useless padding
* @library /test/lib /
* @requires vm.compiler2.enabled
* @requires (os.simpleArch == "x64")
* @run driver compiler.c2.irTests.TestPadding
*/
public class TestPadding {
public static void main(String[] args) {
TestFramework.runWithFlags("-XX:+IntelJccErratumMitigation");
}
@Run(test = "test")
public static void test_runner() {
test(42);
tpf.b1++; // to take both branches in test()
}
@Test
@IR(counts = { IRNode.NOP, "<=1" })
static int test(int i) {
TestPadding tp = tpf;
if (tp.b1 > 42) { // Big 'cmpb' instruction at offset 0x30
tp.i1 = i;
}
return i;
}
static TestPadding t1;
static TestPadding t2;
static TestPadding t3;
static TestPadding t4;
static TestPadding tpf = new TestPadding(); // Static field offset > 128
int i1;
long l1;
long l2;
long l3;
long l4;
long l5;
long l6;
long l7;
long l8;
long l9;
long l10;
long l11;
long l12;
long l13;
long l14;
long l15;
long l16;
byte b1 = 1; // Field offset > 128
}
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