/*
* Copyright (c) 2012, 2012, 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
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*/
package com.oracle.truffle.api.dsl.test;
import org.junit.Assert;
import org.junit.Test;
import com.oracle.truffle.api.CallTarget;
import com.oracle.truffle.api.dsl.NodeChild;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.dsl.test.SpecializationGroupingTestFactory.TestElseConnectionBug1Factory;
import com.oracle.truffle.api.dsl.test.SpecializationGroupingTestFactory.TestElseConnectionBug2Factory;
import com.oracle.truffle.api.dsl.test.TypeSystemTest.ValueNode;
import com.oracle.truffle.api.frame.VirtualFrame;
import com.oracle.truffle.api.nodes.SlowPathException;
/**
* Tests execution counts of guards. While we do not make guarantees for guard invocation except for
* their execution order our implementation reduces the calls to guards as much as possible for the
* generic case.
*/
public class SpecializationGroupingTest {
@Test
public void testElseConnectionBug1() {
CallTarget target = TestHelper.createCallTarget(TestElseConnectionBug1Factory.create(new GenericInt()));
Assert.assertEquals(42, target.call());
}
@SuppressWarnings("unused")
@NodeChild(value = "genericChild", type = GenericInt.class)
public abstract static class TestElseConnectionBug1 extends ValueNode {
@Specialization(rewriteOn = {SlowPathException.class}, guards = "isInitialized(value)")
public int do1(int value) throws SlowPathException {
throw new SlowPathException();
}
@Specialization(replaces = "do1", guards = "isInitialized(value)")
public int do2(int value) {
return value == 42 ? value : 0;
}
@Specialization(guards = "!isInitialized(value)")
public Object do3(int value) {
throw new AssertionError();
}
boolean isInitialized(int value) {
return true;
}
}
public static final class GenericInt extends ValueNode {
@Override
public Object execute(VirtualFrame frame) {
return executeInt(frame);
}
@Override
public int executeInt(VirtualFrame frame) {
return 42;
}
}
@Test
public void testElseConnectionBug2() {
TestHelper.assertRuns(TestElseConnectionBug2Factory.getInstance(), new Object[]{42}, new Object[]{42});
}
@SuppressWarnings("unused")
@NodeChild
public abstract static class TestElseConnectionBug2 extends ValueNode {
@Specialization(guards = "guard0(value)")
public int do1(int value) {
throw new AssertionError();
}
@Specialization(guards = "guard1(value)")
public int do2(int value) {
throw new AssertionError();
}
@Specialization(guards = "!guard0(value)")
public int do3(int value) {
return value;
}
boolean guard0(int value) {
return false;
}
boolean guard1(int value) {
return false;
}
}
}