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/*
* Copyright (c) 2023, 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
* @ignore
* @bug 8201516
* @summary Verify that debug information in C2 compiled code is correct.
* @library /test/lib /
* @requires vm.compiler2.enabled
* @run driver compiler.c2.irTests.TestDebugInfo
*/
// ignore -- as ir_framework is not in 11.
public class TestDebugInfo {
public static void main(String[] args) {
TestFramework.runWithFlags("-XX:+UnlockDiagnosticVMOptions", "-XX:+DebugNonSafepoints");
}
static class MyClass {
final int val;
@ForceInline
public MyClass(int val) {
this.val = val;
}
@ForceInline
synchronized void synchronizedMethod(boolean throwIt) {
if (throwIt) {
throw new RuntimeException(); // Make sure there is an exception state
}
}
}
static Object[] array = new Object[3];
static MyClass myVal = new MyClass(42);
// Verify that the MemBarRelease emitted at the MyClass constructor exit
// does not incorrectly reference the caller method in its debug information.
@Test
@IR(failOn = {"MemBarRelease.*testFinalFieldInit.*bci:-1"}, phase = CompilePhase.BEFORE_MATCHING)
public static void testFinalFieldInit() {
array[0] = new MyClass(42);
array[1] = new MyClass(42);
array[2] = new MyClass(42);
}
// Verify that the MemBarReleaseLock emitted at the synchronizedMethod exit
// does not incorrectly reference the caller method in its debug information.
@Test
@IR(failOn = {"MemBarReleaseLock.*testSynchronized.*bci:-1"}, phase = CompilePhase.BEFORE_MATCHING)
public static void testSynchronized() {
try {
myVal.synchronizedMethod(false);
myVal.synchronizedMethod(true);
} catch (Exception e) {
// Ignore
}
}
static byte b0 = 0;
static byte b1 = 0;
static byte b2 = 0;
static byte b3 = 0;
@ForceInline
public static Integer useless3(Integer val) {
return ++val;
}
@ForceInline
public static Integer useless2(Integer val) {
return useless3(useless3(useless3(useless3(useless3(useless3(useless3(useless3(val))))))));
}
@ForceInline
public static Integer useless1(Integer val) {
return useless2(useless2(useless2(useless2(useless2(useless2(useless2(useless2(val))))))));
}
@ForceInline
public static void useful3() {
b3 = 3;
}
@ForceInline
public static void useful2() {
useful3();
b2 = 2;
}
@ForceInline
public static void useful1() {
useful2();
b1 = 1;
}
// Verify that RenumberLiveNodes preserves the debug information side table.
@Test
@IR(counts = {"StoreB.*name=b3.*useful3.*bci:1.*useful2.*bci:0.*useful1.*bci:0.*testRenumberLiveNodes.*bci:9", "= 1"}, phase = CompilePhase.BEFORE_MATCHING)
@IR(counts = {"StoreB.*name=b2.*useful2.*bci:4.*useful1.*bci:0.*testRenumberLiveNodes.*bci:9", "= 1"}, phase = CompilePhase.BEFORE_MATCHING)
@IR(counts = {"StoreB.*name=b1.*useful1.*bci:4.*testRenumberLiveNodes.*bci:9", "= 1"}, phase = CompilePhase.BEFORE_MATCHING)
@IR(counts = {"StoreB.*name=b0.*testRenumberLiveNodes.*bci:13", "= 1"}, phase = CompilePhase.BEFORE_MATCHING)
public static void testRenumberLiveNodes() {
// This generates ~3700 useless nodes to trigger RenumberLiveNodes
useless1(42);
// Do something useful
useful1();
b0 = 0;
}
}
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