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/*
! * Copyright (c) 2021, 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.
/*
! * Copyright (c) 2021, 2026, 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.
package compiler.ciReplay;
import jdk.test.lib.Asserts;
- import java.io.IOException;
- import java.nio.file.Files;
- import java.nio.file.Paths;
- import java.nio.file.Path;
- import java.nio.file.StandardOpenOption;
- import java.util.ArrayList;
import java.util.List;
public class TestUnresolvedClasses extends CiReplayBase {
private static final String LOG_FILE = "hotspot.log";
! private static final String[] COMMAND_LINE = new String[] {"-XX:LogFile='" + LOG_FILE + "'", "-XX:+LogCompilation", "-XX:+PrintIdeal",
! "-XX:CompileCommand=dontinline,compiler.ciReplay.Test::dontInline"};
public static void main(String[] args) {
new TestUnresolvedClasses().runTest(false, TIERED_DISABLED_VM_OPTION);
}
@Override
package compiler.ciReplay;
import jdk.test.lib.Asserts;
import java.util.List;
public class TestUnresolvedClasses extends CiReplayBase {
private static final String LOG_FILE = "hotspot.log";
! private final PrintIdeal printIdeal = new PrintIdeal(LOG_FILE);
!
public static void main(String[] args) {
new TestUnresolvedClasses().runTest(false, TIERED_DISABLED_VM_OPTION);
}
@Override
return Test.class.getName();
}
@Override
public void testAction() {
! positiveTest(COMMAND_LINE);
// Should find CallStaticJava node for dontInline() as f.bar() is resolved and parsing completes.
checkLogFile(true);
// Remove ciInstanceKlass entry for Foo in replay file.
! try {
- Path replayFilePath = Paths.get(REPLAY_FILE_NAME);
- List<String> replayContent = Files.readAllLines(replayFilePath);
- List<String> newReplayContent = new ArrayList<>();
- boolean foundFoo = false;
- for (String line : replayContent) {
- if (!line.startsWith("ciInstanceKlass compiler/ciReplay/Foo")) {
- newReplayContent.add(line);
- } else {
- foundFoo = true;
- }
- }
- Asserts.assertTrue(foundFoo, "Did not find ciInstanceKlass compiler/ciReplay/Foo entry");
- Files.write(replayFilePath, newReplayContent, StandardOpenOption.TRUNCATE_EXISTING);
- } catch (IOException ioe) {
- throw new Error("Failed to read/write replay data: " + ioe, ioe);
- }
! positiveTest(COMMAND_LINE);
// No ciInstanceKlass entry for Foo is found in the replay. Replay compilation simulates that Foo is unresolved.
// Therefore, C2 cannot resolve f.bar() at parsing time. It emits an UCT to resolve Foo and stops parsing.
// The call to dontInline() will not be parsed and thus we should not find a CallStaticJava node for it.
checkLogFile(false);
remove(LOG_FILE);
}
// Parse <ideal> entry in hotspot.log file and try to find the call for dontInline().
private void checkLogFile(boolean shouldMatch) {
String toMatch = "Test::dontInline";
! try (var br = Files.newBufferedReader(Paths.get(LOG_FILE))) {
! String line;
! boolean printIdealLine = false;
! while ((line = br.readLine()) != null) {
! if (printIdealLine) {
- if (line.startsWith("</ideal")) {
- break;
- }
- if (line.contains(toMatch)) {
- Asserts.assertTrue(line.contains("CallStaticJava"), "must be CallStaticJava node");
- Asserts.assertTrue(shouldMatch, "Should not have found " + toMatch);
- return;
- }
- } else {
- printIdealLine = line.startsWith("<ideal");
- }
- }
- } catch (IOException e) {
- throw new Error("Failed to read " + LOG_FILE + " data: " + e, e);
}
- Asserts.assertFalse(shouldMatch, "Should have found " + toMatch);
}
- }
! class Test {
! static Foo f = new Foo();
! public static void main(String[] args) {
! for (int i = 0; i < 10000; i++) {
! test();
}
- }
! public static void test() {
! f.bar();
! // At replay compilation: Should emit UCT for f.bar() because class Foo is unloaded. Parsing stops here.
! // dontInline() is not parsed anymore.
! dontInline();
! }
! // Not inlined
! public static void dontInline() {
}
- }
! class Foo {
! public int bar() {
! return 3;
}
}
return Test.class.getName();
}
@Override
public void testAction() {
! List<String> vmFlags = printIdeal.vmFlags();
+ vmFlags.add("-XX:CompileCommand=dontinline,*Test::dontInline");
+ String[] commandLine = vmFlags.toArray(new String[0]);
+ positiveTest(commandLine);
+ printIdeal.parse();
// Should find CallStaticJava node for dontInline() as f.bar() is resolved and parsing completes.
checkLogFile(true);
+ ReplayFile replayFile = new ReplayFile(getReplayFileName());
// Remove ciInstanceKlass entry for Foo in replay file.
! replayFile.removeLineStartingWith("ciInstanceKlass compiler/ciReplay/TestUnresolvedClasses$Foo");
! positiveTest(commandLine);
+ printIdeal.parse();
// No ciInstanceKlass entry for Foo is found in the replay. Replay compilation simulates that Foo is unresolved.
// Therefore, C2 cannot resolve f.bar() at parsing time. It emits an UCT to resolve Foo and stops parsing.
// The call to dontInline() will not be parsed and thus we should not find a CallStaticJava node for it.
checkLogFile(false);
remove(LOG_FILE);
}
// Parse <ideal> entry in hotspot.log file and try to find the call for dontInline().
private void checkLogFile(boolean shouldMatch) {
String toMatch = "Test::dontInline";
! String line = printIdeal.find(toMatch);
! if (shouldMatch) {
! Asserts.assertTrue(line.contains("CallStaticJava"), "must be CallStaticJava node");
! } else {
! Asserts.assertTrue(line.isEmpty(), "Should not have found " + toMatch);
}
}
! private static class Test {
! static Foo f = new Foo();
! public static void main(String[] args) {
! for (int i = 0; i < 10000; i++) {
! test();
+ }
}
! public static void test() {
! f.bar();
! // At replay compilation: Should emit UCT for f.bar() because class Foo is unloaded. Parsing stops here.
! // dontInline() is not parsed anymore.
! dontInline();
! }
! // Not inlined
! public static void dontInline() {
+ }
}
! private static class Foo {
! public int bar() {
! return 3;
+ }
}
}
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