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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 8267532
* @summary check that uncommon trap is generated for unhandled catch block
* @requires vm.opt.StressUnstableIfTraps == null | !vm.opt.StressUnstableIfTraps
* @library /test/lib /
* @requires vm.opt.DeoptimizeALot != true
* @run driver compiler.c2.irTests.TestPrunedExHandler
*/
public class TestPrunedExHandler {
public static void main(String[] args) {
TestFramework.runWithFlags(
"-XX:+TieredCompilation", // we only profile in tier 3
"-XX:CompileCommand=inline,compiler.c2.irTests.TestPrunedExHandler::inlinee",
"-XX:CompileCommand=dontinline,compiler.c2.irTests.TestPrunedExHandler::outOfLine");
}
@Test
@IR(counts = {IRNode.UNREACHED_TRAP, "1"})
public static void testTrap() {
try {
outOfLine(false);
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
private static void outOfLine(boolean shouldThrow) {
if (shouldThrow) {
throw new IllegalStateException();
}
}
@Test
@IR(counts = {IRNode.UNREACHED_TRAP, "0"})
public static void testNoTrap(boolean shouldThrow) {
try {
outOfLine(shouldThrow);
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
@Run(test = "testNoTrap", mode = RunMode.STANDALONE)
public static void runNoTrap(RunInfo info) {
for (int i = 0; i < 2_000; i++) { // tier 3
testNoTrap(false);
}
TestFramework.assertCompiledAtLevel(info.getTest(), CompLevel.C1_FULL_PROFILE);
testNoTrap(true); // mark ex handler as entered
for (int i = 0; i < 20_000; i++) { // tier 4
testNoTrap(false); // should have no trap
}
}
@Test
@IR(counts = {IRNode.UNREACHED_TRAP, "0"})
public static void testNoTrapAfterDeopt(boolean shouldThrow) {
try {
outOfLine(shouldThrow);
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
@Run(test = "testNoTrapAfterDeopt", mode = RunMode.STANDALONE)
public static void runNoTrapAfterDeopt(RunInfo info) {
for (int i = 0; i < 20_000; i++) { // tier 4
testNoTrapAfterDeopt(false);
}
TestFramework.assertCompiledByC2(info.getTest());
testNoTrapAfterDeopt(true); // deopt + mark ex handler as entered
TestFramework.assertDeoptimizedByC2(info.getTest());
for (int i = 0; i < 20_000; i++) { // tier 4 again
testNoTrapAfterDeopt(false); // should have no trap
}
}
@Test
@IR(counts = {IRNode.UNREACHED_TRAP, "0"})
public static void testNoTrapAfterDeoptInlined(boolean shouldThrow) {
// check that we handle exception thrown in inlinee, caught in caller.
// C2 handles exception dispatch differently for those cases
try {
inlinee(shouldThrow);
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
private static void inlinee(boolean shouldThrow) {
outOfLine(shouldThrow);
}
@Run(test = "testNoTrapAfterDeoptInlined", mode = RunMode.STANDALONE)
public static void runNoTrapAfterDeoptInlined(RunInfo info) {
for (int i = 0; i < 20_000; i++) { // tier 4
testNoTrapAfterDeoptInlined(false);
}
TestFramework.assertCompiledByC2(info.getTest());
testNoTrapAfterDeoptInlined(true); // deopt + mark ex handler as entered
TestFramework.assertDeoptimizedByC2(info.getTest());
for (int i = 0; i < 20_000; i++) { // tier 4 again
testNoTrapAfterDeoptInlined(false); // should have no trap
}
}
@Test
@IR(counts = {IRNode.UNREACHED_TRAP, "1"})
public static void testThrowBeforeProfiling(boolean shouldThrow) {
try {
outOfLine(shouldThrow);
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
@Run(test = "testThrowBeforeProfiling", mode = RunMode.STANDALONE)
public static void runThrowBeforeProfiling(RunInfo info) {
testThrowBeforeProfiling(true);
// this exception should not be profiled, as MDO has not been created yet
for (int i = 0; i < 20_000; i++) { // tier 4
testThrowBeforeProfiling(false);
}
// should have trap
}
@Test
@IR(counts = {IRNode.UNREACHED_TRAP, "0"})
public static void testInterpreterProfiling(boolean takeBranch, boolean shouldThrow) {
if (takeBranch) {
System.out.println("testInterpreterProfiling: branch taken");
}
try {
outOfLine(shouldThrow);
} catch (IllegalStateException e) {
e.printStackTrace();
}
}
@Run(test = "testInterpreterProfiling", mode = RunMode.STANDALONE)
public static void runInterpreterProfiling(RunInfo info) {
for (int i = 0; i < 20_000; i++) { // tier 4
testInterpreterProfiling(false, false);
}
TestFramework.assertCompiledByC2(info.getTest());
// should have no trap at this point
testInterpreterProfiling(true, false); // take branch -> deopt due to unstable if
TestFramework.assertDeoptimizedByC2(info.getTest());
// continue in the interpreter:
testInterpreterProfiling(false, false);
// throw exception in the interpreter, test interpreter profiling:
testInterpreterProfiling(false, true);
for (int i = 0; i < 20_000; i++) { // tier 4 again
testInterpreterProfiling(false, false);
}
// should have no trap
}
}
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