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annotate test/compiler/whitebox/IsMethodCompilableTest.java @ 14661:bbfe3ac1471d

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8007270: Make IsMethodCompilable test work with tiered Summary: Only c2 compiles counts toward cutoff Reviewed-by: kvn, roland
author neliasso
date Tue, 28 Jan 2014 15:05:46 +0100
parents f9a4b59ae350
children 2dfa56e10640
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test IsMethodCompilableTest
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26 * @bug 8007270 8006683 8007288 8022832
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27 * @library /testlibrary /testlibrary/whitebox /testlibrary/com/oracle/java/testlibrary
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28 * @build IsMethodCompilableTest
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29 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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30 * @run main ClassFileInstaller com.oracle.java.testlibrary.Platform
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31 * @run main/othervm/timeout=2400 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:PerMethodRecompilationCutoff=3 -XX:CompileCommand=compileonly,SimpleTestCase$Helper::* IsMethodCompilableTest
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32 * @summary testing of WB::isMethodCompilable()
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33 * @author igor.ignatyev@oracle.com
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34 */
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35
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36 import com.oracle.java.testlibrary.Platform;
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37
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38 public class IsMethodCompilableTest extends CompilerWhiteBoxTest {
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39 /**
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40 * Value of {@code -XX:PerMethodRecompilationCutoff}
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41 */
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42 protected static final long PER_METHOD_RECOMPILATION_CUTOFF;
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43
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44 static {
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45 long tmp = Long.parseLong(
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46 getVMOption("PerMethodRecompilationCutoff", "400"));
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47 if (tmp == -1) {
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48 PER_METHOD_RECOMPILATION_CUTOFF = -1 /* Inf */;
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49 } else {
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50 PER_METHOD_RECOMPILATION_CUTOFF = (0xFFFFFFFFL & tmp);
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51 }
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52 }
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53
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54 public static void main(String[] args) throws Exception {
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55 CompilerWhiteBoxTest.main(IsMethodCompilableTest::new, args);
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56 }
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57
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58 private IsMethodCompilableTest(TestCase testCase) {
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59 super(testCase);
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60 // to prevent inlining of #method
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61 WHITE_BOX.testSetDontInlineMethod(method, true);
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62 }
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63
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64 /**
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65 * Tests {@code WB::isMethodCompilable()} by recompilation of tested method
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66 * 'PerMethodRecompilationCutoff' times and checks compilation status. Also
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67 * checks that WB::clearMethodState() clears no-compilable flags. Only
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68 * applicable to c2 compiled methods.
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69 *
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70 * @throws Exception if one of the checks fails.
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71 */
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72 @Override
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73 protected void test() throws Exception {
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74
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75 // Only c2 compilations can be disabled through PerMethodRecompilationCutoff
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76 if (!Platform.isServer()) {
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77 return;
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78 }
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79
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80 if (testCase.isOsr() && CompilerWhiteBoxTest.MODE.startsWith(
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81 "compiled ")) {
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82 System.err.printf("Warning: %s is not applicable in %s%n",
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83 testCase.name(), CompilerWhiteBoxTest.MODE);
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84 return;
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85 }
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86 if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
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87 throw new RuntimeException(method + " must be compilable");
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88 }
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89 System.out.println("PerMethodRecompilationCutoff = "
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90 + PER_METHOD_RECOMPILATION_CUTOFF);
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91 if (PER_METHOD_RECOMPILATION_CUTOFF == -1) {
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92 System.err.println(
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93 "Warning: test is not applicable if PerMethodRecompilationCutoff == Inf");
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94 return;
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95 }
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96
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97 // deoptimize 'PerMethodRecompilationCutoff' times
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98 for (long attempts = 0, successes = 0;
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99 (successes < PER_METHOD_RECOMPILATION_CUTOFF) &&
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100 (attempts < PER_METHOD_RECOMPILATION_CUTOFF*2) &&
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101 isCompilable(COMP_LEVEL_FULL_OPTIMIZATION); attempts++) {
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102 if (compileAndDeoptimize() == COMP_LEVEL_FULL_OPTIMIZATION) {
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103 successes++;
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104 }
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105 }
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106
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107 if (!testCase.isOsr() && !isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
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108 // in osr test case count of deopt maybe more than iterations
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109 throw new RuntimeException(method + " is not compilable after "
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110 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
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111 }
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112
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113 // Now compile once more
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114 compileAndDeoptimize();
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115
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116 if (isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
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117 throw new RuntimeException(method + " is still compilable after "
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118 + PER_METHOD_RECOMPILATION_CUTOFF + " iterations");
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119 }
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120 checkNotCompiled();
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121 compile();
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122 waitBackgroundCompilation();
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123 checkNotCompiled(COMP_LEVEL_FULL_OPTIMIZATION);
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124
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125 // WB.clearMethodState() must reset no-compilable flags
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126 WHITE_BOX.clearMethodState(method);
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127 if (!isCompilable(COMP_LEVEL_FULL_OPTIMIZATION)) {
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128 throw new RuntimeException(method
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129 + " is not compilable after clearMethodState()");
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130 }
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131 compile();
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132 checkCompiled();
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133 }
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134
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135 private int compileAndDeoptimize() throws Exception {
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136 compile();
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137 waitBackgroundCompilation();
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138 int compLevel = getCompLevel();
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139 deoptimize();
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140 return compLevel;
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141 }
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142 }