1 /* 2 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * @test Level2RecompilationTest 26 * @summary Test downgrading mechanism from level 3 to level 2 for those profiled methods. 27 * @library /testlibrary /testlibrary/whitebox /compiler/whitebox 28 * @build Level2RecompilationTest 29 * @run main ClassFileInstaller sun.hotspot.WhiteBox 30 * @run main/othervm -Xbootclasspath/a:. -XX:+TieredCompilation 31 * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:-UseCounterDecay 32 * -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* 33 * -XX:CompileCommand=print,SimpleTestCase$Helper::* 34 * Level2RecompilationTest 35 */ 36 public class Level2RecompilationTest extends CompLevelsTest { 37 public static void main(String[] args) throws Throwable { 38 if (CompilerWhiteBoxTest.skipOnTieredCompilation(false)) { 39 throw new RuntimeException("Test isn't applicable for non-tiered mode"); 40 } 41 String[] testcases = {"METHOD_TEST", "OSR_STATIC_TEST"}; 42 CompilerWhiteBoxTest.main(Level2RecompilationTest::new, testcases); 43 } 44 45 protected Level2RecompilationTest(TestCase testCase) { 46 super(testCase); 47 // to prevent inlining of #method 48 WHITE_BOX.testSetDontInlineMethod(method, true); 49 } 50 51 @Override 52 protected void test() throws Exception { 53 if (skipXcompOSR()) { 54 return; 55 } 56 57 checkNotCompiled(); 58 int bci = WHITE_BOX.getMethodEntryBci(method); 59 WHITE_BOX.markMethodProfiled(method); 60 if (testCase.isOsr()) { 61 // for OSR compilation, it must be the begin of a BB. 62 // c1_GraphBulider.cpp:153 assert(method()->bci_block_start().at(cur_bci), ... 63 bci = 0; 64 } 65 66 WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_FULL_PROFILE, bci); 67 checkCompiled(); 68 checkLevel(COMP_LEVEL_LIMITED_PROFILE, getCompLevel()); 69 70 for (int i=0; i<100; ++i) { 71 WHITE_BOX.enqueueMethodForCompilation(method, COMP_LEVEL_FULL_PROFILE, bci); 72 waitBackgroundCompilation(); 73 checkLevel(COMP_LEVEL_LIMITED_PROFILE, getCompLevel()); 74 } 75 } 76 77 @Override 78 protected void checkLevel(int expected, int actual) { 79 if (expected == COMP_LEVEL_FULL_PROFILE 80 && actual == COMP_LEVEL_LIMITED_PROFILE) { 81 // for simple method full_profile may be replaced by limited_profile 82 if (IS_VERBOSE) { 83 System.out.printf("Level check: full profiling was replaced " 84 + "by limited profiling. Expected: %d, actual:%d\n", 85 expected, actual); 86 } 87 return; 88 } 89 super.checkLevel(expected, actual); 90 } 91 } 92