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...dk.graal.compiler.test/src/jdk/graal/compiler/truffle/test/CallPartialEvaluationTest.java
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| /* | ||
| * Copyright (c) 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. Oracle designates this | ||
| * particular file as subject to the "Classpath" exception as provided | ||
| * by Oracle in the LICENSE file that accompanied this code. | ||
| * | ||
| * 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 jdk.graal.compiler.truffle.test; | ||
|
|
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| import static org.junit.Assert.assertTrue; | ||
|
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| import org.junit.Test; | ||
|
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| import com.oracle.truffle.api.CallTarget; | ||
| import com.oracle.truffle.api.CompilerDirectives; | ||
| import com.oracle.truffle.api.frame.FrameDescriptor; | ||
| import com.oracle.truffle.api.frame.FrameSlotKind; | ||
| import com.oracle.truffle.api.frame.VirtualFrame; | ||
| import com.oracle.truffle.api.nodes.RootNode; | ||
| import com.oracle.truffle.runtime.OptimizedCallTarget; | ||
|
|
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| public class CallPartialEvaluationTest extends TestWithSynchronousCompiling { | ||
|
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| static class ConstantTargetRootNode extends RootNode { | ||
|
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| // deliberately | ||
| final CallTarget target; | ||
|
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| protected ConstantTargetRootNode(RootNode target) { | ||
| super(null); | ||
| this.target = target.getCallTarget(); | ||
| } | ||
|
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| @Override | ||
| public Object execute(VirtualFrame frame) { | ||
| Object result = target.call(this); | ||
| if (CompilerDirectives.inCompiledCode() && !CompilerDirectives.isCompilationConstant(result)) { | ||
| throw CompilerDirectives.shouldNotReachHere(); | ||
| } | ||
| return result; | ||
| } | ||
|
|
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| } | ||
|
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| static class NonConstantTargetRootNode extends RootNode { | ||
|
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| // deliberately not a constant | ||
| CallTarget target; | ||
|
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| protected NonConstantTargetRootNode(RootNode target) { | ||
| super(null); | ||
| this.target = target.getCallTarget(); | ||
| } | ||
|
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| @Override | ||
| public Object execute(VirtualFrame frame) { | ||
| Object result = target.call(this); | ||
| if (CompilerDirectives.inCompiledCode() && CompilerDirectives.isCompilationConstant(result)) { | ||
| throw CompilerDirectives.shouldNotReachHere(); | ||
| } | ||
| return result; | ||
| } | ||
|
|
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| } | ||
|
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| @Test | ||
| public void testInliningConstant() { | ||
| var root0 = new ConstantTargetRootNode(RootNode.createConstantNode(42)); | ||
| var root1 = new ConstantTargetRootNode(root0); | ||
| var root2 = new ConstantTargetRootNode(root1); | ||
|
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| OptimizedCallTarget target = (OptimizedCallTarget) root2.getCallTarget(); | ||
| target.call(); | ||
| target.compile(true); | ||
| target.call(); | ||
| assertTrue(target.isValid()); | ||
| } | ||
|
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| static class ExpectedNonConstantRootNode extends RootNode { | ||
|
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| protected ExpectedNonConstantRootNode() { | ||
| super(null); | ||
| } | ||
|
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| @Override | ||
| public Object execute(VirtualFrame frame) { | ||
| return 42; | ||
| } | ||
|
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| } | ||
|
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| @Test | ||
| public void testInliningNonConstant() { | ||
| var root = new NonConstantTargetRootNode(RootNode.createConstantNode(42)); | ||
| OptimizedCallTarget target = (OptimizedCallTarget) root.getCallTarget(); | ||
| target.call(); | ||
| target.compile(true); | ||
| target.call(); | ||
| assertTrue(target.isValid()); | ||
| } | ||
|
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| static class LateFoldTargetRootNode extends RootNode { | ||
|
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| final CallTarget target; | ||
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| protected LateFoldTargetRootNode(RootNode target) { | ||
| super(null, createFrameDescriptor()); | ||
| this.target = target.getCallTarget(); | ||
| } | ||
|
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| static FrameDescriptor createFrameDescriptor() { | ||
| var b = FrameDescriptor.newBuilder(); | ||
| b.addSlot(FrameSlotKind.Object, "test", null); | ||
| return b.build(); | ||
| } | ||
|
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| @Override | ||
| public Object execute(VirtualFrame frame) { | ||
| frame.setObject(0, target); | ||
| Object result = ((CallTarget) frame.getObject(0)).call(this); | ||
| if (CompilerDirectives.inCompiledCode() && CompilerDirectives.isCompilationConstant(result)) { | ||
| /* | ||
| * Unfortunately we do not yet support inlining with indirect constants. The inliner | ||
| * needs to be adapted for this to work. If it ever starts to work then this test | ||
| * will fail. Feel free to switch the condition for compilation constant. | ||
| */ | ||
| throw CompilerDirectives.shouldNotReachHere(); | ||
| } | ||
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| return result; | ||
| } | ||
|
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| } | ||
|
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| @Test | ||
| public void testLateConstantFold() { | ||
| var root0 = new LateFoldTargetRootNode(RootNode.createConstantNode(42)); | ||
| var root1 = new LateFoldTargetRootNode(root0); | ||
| var root2 = new LateFoldTargetRootNode(root1); | ||
| OptimizedCallTarget target = (OptimizedCallTarget) root2.getCallTarget(); | ||
| target.call(); | ||
| target.compile(true); | ||
| target.call(); | ||
| assertTrue(target.isValid()); | ||
| } | ||
| } |
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