hotspot/test/compiler/whitebox/MakeMethodNotCompilableTest.java
author iignatyev
Fri, 26 Apr 2013 07:21:41 -0700
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parent 17015 92390f57e8b1
child 19282 9764b5a041b6
permissions -rw-r--r--
8012322: Tiered: CompilationPolicy::can_be_compiled(CompLevel_all) mistakenly return false Reviewed-by: kvn, vlivanov
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/*
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 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test MakeMethodNotCompilableTest
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 * @bug 8012322
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 * @library /testlibrary /testlibrary/whitebox
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 * @build MakeMethodNotCompilableTest
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 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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 * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI MakeMethodNotCompilableTest
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 * @summary testing of WB::makeMethodNotCompilable()
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 * @author igor.ignatyev@oracle.com
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 */
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public class MakeMethodNotCompilableTest extends CompilerWhiteBoxTest {
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    public static void main(String[] args) throws Exception {
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        if (args.length == 0) {
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            for (TestCase test : TestCase.values()) {
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                new MakeMethodNotCompilableTest(test).runTest();
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            }
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        } else {
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            for (String name : args) {
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                new MakeMethodNotCompilableTest(
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                        TestCase.valueOf(name)).runTest();
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            }
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        }
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    }
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    public MakeMethodNotCompilableTest(TestCase testCase) {
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        super(testCase);
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        // to prevent inlining of #method
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        WHITE_BOX.testSetDontInlineMethod(method, true);
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    }
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    /**
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     * Tests {@code WB::makeMethodNotCompilable()} by calling it before
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     * compilation and checking that method isn't compiled. Also
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     * checks that WB::clearMethodState() clears no-compilable flags. For
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     * tiered, additional checks for all available levels are conducted.
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     *
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     * @throws Exception if one of the checks fails.
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     */
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    @Override
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    protected void test() throws Exception {
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        checkNotCompiled();
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        if (!WHITE_BOX.isMethodCompilable(method)) {
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            throw new RuntimeException(method + " must be compilable");
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        }
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        if (TIERED_COMPILATION) {
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            final int tierLimit = TIERED_STOP_AT_LEVEL + 1;
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            for (int testedTier = 1; testedTier < tierLimit; ++testedTier) {
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                testTier(testedTier);
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            }
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            for (int testedTier = 1; testedTier < tierLimit; ++testedTier) {
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                WHITE_BOX.makeMethodNotCompilable(method, testedTier);
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                if (WHITE_BOX.isMethodCompilable(method, testedTier)) {
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                    throw new RuntimeException(method
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                            + " must be not compilable at level" + testedTier);
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                }
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                WHITE_BOX.enqueueMethodForCompilation(method, testedTier);
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                checkNotCompiled();
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                if (!WHITE_BOX.isMethodCompilable(method)) {
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                    System.out.println(method
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                            + " is not compilable after level " + testedTier);
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                }
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            }
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        } else {
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            compile();
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            checkCompiled();
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            int compLevel = WHITE_BOX.getMethodCompilationLevel(method);
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            WHITE_BOX.deoptimizeMethod(method);
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            WHITE_BOX.makeMethodNotCompilable(method, compLevel);
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            if (WHITE_BOX.isMethodCompilable(method, COMP_LEVEL_ANY)) {
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                throw new RuntimeException(method
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                        + " must be not compilable at CompLevel::CompLevel_any,"
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                        + " after it is not compilable at " + compLevel);
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            }
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            WHITE_BOX.clearMethodState(method);
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            // nocompilable at opposite level must make no sense
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            int oppositeLevel;
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            if (isC1Compile(compLevel)) {
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              oppositeLevel = COMP_LEVEL_FULL_OPTIMIZATION;
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            } else {
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              oppositeLevel = COMP_LEVEL_SIMPLE;
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            }
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            WHITE_BOX.makeMethodNotCompilable(method, oppositeLevel);
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            if (!WHITE_BOX.isMethodCompilable(method, COMP_LEVEL_ANY)) {
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                  throw new RuntimeException(method
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                        + " must be compilable at CompLevel::CompLevel_any,"
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                        + " even it is not compilable at opposite level ["
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                        + compLevel + "]");
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            }
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            if (!WHITE_BOX.isMethodCompilable(method, compLevel)) {
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                  throw new RuntimeException(method
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                        + " must be compilable at level " + compLevel
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                        + ", even it is not compilable at opposite level ["
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                        + compLevel + "]");
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            }
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        }
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        // clearing after tiered/non-tiered tests
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        // WB.clearMethodState() must reset no-compilable flags
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        WHITE_BOX.clearMethodState(method);
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        if (!WHITE_BOX.isMethodCompilable(method)) {
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            throw new RuntimeException(method
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                    + " is not compilable after clearMethodState()");
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        }
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        WHITE_BOX.makeMethodNotCompilable(method);
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        if (WHITE_BOX.isMethodCompilable(method)) {
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            throw new RuntimeException(method + " must be not compilable");
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        }
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        compile();
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        checkNotCompiled();
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        if (WHITE_BOX.isMethodCompilable(method)) {
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            throw new RuntimeException(method + " must be not compilable");
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        }
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        // WB.clearMethodState() must reset no-compilable flags
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        WHITE_BOX.clearMethodState(method);
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        if (!WHITE_BOX.isMethodCompilable(method)) {
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            throw new RuntimeException(method
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                    + " is not compilable after clearMethodState()");
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        }
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        compile();
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        checkCompiled();
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    }
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    // separately tests each tier
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    private void testTier(int testedTier) {
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        if (!WHITE_BOX.isMethodCompilable(method, testedTier)) {
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            throw new RuntimeException(method
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                    + " is not compilable on start");
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        }
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        WHITE_BOX.makeMethodNotCompilable(method, testedTier);
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        // tests for all other tiers
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        for (int anotherTier = 1, tierLimit = TIERED_STOP_AT_LEVEL + 1;
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                    anotherTier < tierLimit; ++anotherTier) {
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            boolean isCompilable = WHITE_BOX.isMethodCompilable(method,
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                    anotherTier);
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            if (sameCompile(testedTier, anotherTier)) {
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                if (isCompilable) {
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                    throw new RuntimeException(method
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                            + " must be not compilable at level " + anotherTier
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                            + ", if it is not compilable at " + testedTier);
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                }
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                WHITE_BOX.enqueueMethodForCompilation(method, anotherTier);
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                checkNotCompiled();
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            } else {
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                if (!isCompilable) {
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                    throw new RuntimeException(method
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                            + " must be compilable at level " + anotherTier
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                            + ", even if it is not compilable at "
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                            + testedTier);
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                }
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                WHITE_BOX.enqueueMethodForCompilation(method, anotherTier);
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                checkCompiled();
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                WHITE_BOX.deoptimizeMethod(method);
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            }
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            if (!WHITE_BOX.isMethodCompilable(method, COMP_LEVEL_ANY)) {
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                throw new RuntimeException(method
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                        + " must be compilable at 'CompLevel::CompLevel_any'"
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                        + ", if it is not compilable only at " + testedTier);
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            }
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        }
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        // clear state after test
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        WHITE_BOX.clearMethodState(method);
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        if (!WHITE_BOX.isMethodCompilable(method, testedTier)) {
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            throw new RuntimeException(method
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                    + " is not compilable after clearMethodState()");
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        }
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    }
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    private boolean sameCompile(int level1, int level2) {
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        if (level1 == level2) {
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            return true;
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        }
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        if (isC1Compile(level1) && isC1Compile(level2)) {
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            return true;
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        }
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        if (isC2Compile(level1) && isC2Compile(level2)) {
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            return true;
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        }
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        return false;
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    }
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}