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* @bug 8186670
* @library /test/lib
*
* @requires vm.flagless
* @requires os.arch=="aarch64"
*
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 nop 7
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 isb 3
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 yield 1
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 nop 7
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 isb 3
! * @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 yield
*/
package compiler.onSpinWait;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestOnSpinWaitAArch64 {
public static void main(String[] args) throws Exception {
String compiler = args[0];
String spinWaitInst = args[1];
! String spinWaitInstCount = (args.length == 3) ? args[2] : "1";
ArrayList<String> command = new ArrayList<String>();
command.add("-XX:+IgnoreUnrecognizedVMOptions");
command.add("-showversion");
command.add("-XX:-BackgroundCompilation");
command.add("-XX:+UnlockDiagnosticVMOptions");
- command.add("-XX:+PrintAssembly");
if (compiler.equals("c2")) {
command.add("-XX:-TieredCompilation");
} else if (compiler.equals("c1")) {
command.add("-XX:+TieredCompilation");
command.add("-XX:TieredStopAtLevel=1");
* @bug 8186670
* @library /test/lib
*
* @requires vm.flagless
* @requires os.arch=="aarch64"
+ * @requires vm.debug
*
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 nop 7
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 isb 3
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 yield 1
+ * @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c2 sb 1
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 nop 7
* @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 isb 3
! * @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 yield 1
+ * @run driver compiler.onSpinWait.TestOnSpinWaitAArch64 c1 sb 1
*/
package compiler.onSpinWait;
+ import java.util.Arrays;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.ListIterator;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
public class TestOnSpinWaitAArch64 {
+
public static void main(String[] args) throws Exception {
String compiler = args[0];
String spinWaitInst = args[1];
! String spinWaitInstCount = args[2];
ArrayList<String> command = new ArrayList<String>();
command.add("-XX:+IgnoreUnrecognizedVMOptions");
command.add("-showversion");
command.add("-XX:-BackgroundCompilation");
command.add("-XX:+UnlockDiagnosticVMOptions");
if (compiler.equals("c2")) {
command.add("-XX:-TieredCompilation");
} else if (compiler.equals("c1")) {
command.add("-XX:+TieredCompilation");
command.add("-XX:TieredStopAtLevel=1");
}
command.add("-Xbatch");
command.add("-XX:OnSpinWaitInst=" + spinWaitInst);
command.add("-XX:OnSpinWaitInstCount=" + spinWaitInstCount);
command.add("-XX:CompileCommand=compileonly," + Launcher.class.getName() + "::" + "test");
command.add(Launcher.class.getName());
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(command);
OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
analyzer.shouldHaveExitValue(0);
System.out.println(analyzer.getOutput());
checkOutput(analyzer, spinWaitInst, Integer.parseInt(spinWaitInstCount));
}
private static String getSpinWaitInstHex(String spinWaitInst) {
if ("nop".equals(spinWaitInst)) {
! return "1f20 03d5";
} else if ("isb".equals(spinWaitInst)) {
! return "df3f 03d5";
} else if ("yield".equals(spinWaitInst)) {
! return "3f20 03d5";
} else {
throw new RuntimeException("Unknown spin wait instruction: " + spinWaitInst);
}
}
! private static void addInstrs(String line, ArrayList<String> instrs) {
! for (String instr : line.split("\\|")) {
- instrs.add(instr.trim());
- }
- }
-
- // The expected output of PrintAssembly for example for a spin wait with three NOPs:
- //
- // # {method} {0x0000ffff6ac00370} 'test' '()V' in 'compiler/onSpinWait/TestOnSpinWaitAArch64$Launcher'
- // # [sp+0x40] (sp of caller)
- // 0x0000ffff9d557680: 1f20 03d5 | e953 40d1 | 3f01 00f9 | ff03 01d1 | fd7b 03a9 | 1f20 03d5 | 1f20 03d5
- //
- // 0x0000ffff9d5576ac: ;*invokestatic onSpinWait {reexecute=0 rethrow=0 return_oop=0}
- // ; - compiler.onSpinWait.TestOnSpinWaitAArch64$Launcher::test@0 (line 161)
- // 0x0000ffff9d5576ac: 1f20 03d5 | fd7b 43a9 | ff03 0191
//
! // The checkOutput method adds hex instructions before 'invokestatic onSpinWait' and from the line after
! // it to a list. The list is traversed from the end to count spin wait instructions.
//
! // If JVM finds the hsdis library the output is like:
- //
- // # {method} {0x0000ffff63000370} 'test' '()V' in 'compiler/onSpinWait/TestOnSpinWaitAArch64$Launcher'
- // # [sp+0x20] (sp of caller)
- // 0x0000ffffa409da80: nop
- // 0x0000ffffa409da84: sub sp, sp, #0x20
- // 0x0000ffffa409da88: stp x29, x30, [sp, #16] ;*synchronization entry
- // ; - compiler.onSpinWait.TestOnSpinWaitAArch64$Launcher::test@-1 (line 187)
- // 0x0000ffffa409da8c: nop
- // 0x0000ffffa409da90: nop
- // 0x0000ffffa409da94: nop
- // 0x0000ffffa409da98: nop
- // 0x0000ffffa409da9c: nop
- // 0x0000ffffa409daa0: nop
- // 0x0000ffffa409daa4: nop ;*invokestatic onSpinWait {reexecute=0 rethrow=0 return_oop=0}
- // ; - compiler.onSpinWait.TestOnSpinWaitAArch64$Launcher::test@0 (line 187)
- private static void checkOutput(OutputAnalyzer output, String spinWaitInst, int spinWaitInstCount) {
Iterator<String> iter = output.asLines().listIterator();
! String match = skipTo(iter, "'test' '()V' in 'compiler/onSpinWait/TestOnSpinWaitAArch64$Launcher'");
! if (match == null) {
- throw new RuntimeException("Missing compiler output for the method compiler.onSpinWait.TestOnSpinWaitAArch64$Launcher::test");
- }
-
- ArrayList<String> instrs = new ArrayList<String>();
- String line = null;
- boolean hasHexInstInOutput = false;
while (iter.hasNext()) {
! line = iter.next();
! if (line.contains("*invokestatic onSpinWait")) {
break;
}
! if (!hasHexInstInOutput) {
- hasHexInstInOutput = line.contains("|");
- }
- if (line.contains("0x") && !line.contains(";")) {
- addInstrs(line, instrs);
- }
- }
-
- if (!iter.hasNext() || !iter.next().contains("- compiler.onSpinWait.TestOnSpinWaitAArch64$Launcher::test@0") || !iter.hasNext()) {
- throw new RuntimeException("Missing compiler output for Thread.onSpinWait intrinsic");
- }
-
- String strToSearch = null;
- if (!hasHexInstInOutput) {
- instrs.add(line.split(";")[0].trim());
- strToSearch = spinWaitInst;
- } else {
- line = iter.next();
- if (!line.contains("0x") || line.contains(";")) {
- throw new RuntimeException("Expected hex instructions");
- }
-
- addInstrs(line, instrs);
- strToSearch = getSpinWaitInstHex(spinWaitInst);
- }
-
- int foundInstCount = 0;
-
- ListIterator<String> instrReverseIter = instrs.listIterator(instrs.size());
- while (instrReverseIter.hasPrevious()) {
- if (instrReverseIter.previous().endsWith(strToSearch)) {
- foundInstCount = 1;
break;
}
}
! while (instrReverseIter.hasPrevious()) {
! if (!instrReverseIter.previous().endsWith(strToSearch)) {
break;
}
- ++foundInstCount;
}
!
! if (foundInstCount != spinWaitInstCount) {
- throw new RuntimeException("Wrong instruction " + strToSearch + " count " + foundInstCount + "!\n -- expecting " + spinWaitInstCount);
}
- }
! private static String skipTo(Iterator<String> iter, String substring) {
while (iter.hasNext()) {
! String nextLine = iter.next();
! if (nextLine.contains(substring)) {
! return nextLine;
}
}
- return null;
}
static class Launcher {
public static void main(final String[] args) throws Exception {
int end = 20_000;
}
command.add("-Xbatch");
command.add("-XX:OnSpinWaitInst=" + spinWaitInst);
command.add("-XX:OnSpinWaitInstCount=" + spinWaitInstCount);
command.add("-XX:CompileCommand=compileonly," + Launcher.class.getName() + "::" + "test");
+ command.add("-XX:CompileCommand=print," + Launcher.class.getName() + "::" + "test");
command.add(Launcher.class.getName());
ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(command);
OutputAnalyzer analyzer = new OutputAnalyzer(pb.start());
+ if ("sb".equals(spinWaitInst) && analyzer.contains("CPU does not support SB")) {
+ System.out.println("Skipping the test. The current CPU does not support SB instruction.");
+ return;
+ }
+
analyzer.shouldHaveExitValue(0);
System.out.println(analyzer.getOutput());
checkOutput(analyzer, spinWaitInst, Integer.parseInt(spinWaitInstCount));
}
private static String getSpinWaitInstHex(String spinWaitInst) {
if ("nop".equals(spinWaitInst)) {
! return "1f2003d5";
} else if ("isb".equals(spinWaitInst)) {
! return "df3f03d5";
} else if ("yield".equals(spinWaitInst)) {
! return "3f2003d5";
+ } else if ("sb".equals(spinWaitInst)) {
+ return "ff3003d5";
} else {
throw new RuntimeException("Unknown spin wait instruction: " + spinWaitInst);
}
}
! // The expected output for a spin wait with three NOPs
! // if the hsdis library is available:
//
! // ;; spin_wait {
! // 0x0000000111dfa58c: nop
+ // 0x0000000111dfa590: nop
+ // 0x0000000111dfa594: nop
+ // ;; }
//
! private static void checkOutput(OutputAnalyzer output, final String spinWaitInst, final int expectedCount) {
Iterator<String> iter = output.asLines().listIterator();
! // 1. Check whether printed instructions are disassembled
! boolean isDisassembled = false;
while (iter.hasNext()) {
! String line = iter.next();
! if (line.contains("[Disassembly]")) {
+ isDisassembled = true;
break;
}
! if (line.contains("[MachCode]")) {
break;
}
}
! // 2. Look for the block comment
! boolean foundHead = false;
+ while (iter.hasNext()) {
+ String line = iter.next().trim();
+ if (line.contains(";; spin_wait {")) {
+ foundHead = true;
break;
}
}
! if (!foundHead) {
! throw new RuntimeException("Block comment not found");
}
! // 3. Count spin wait instructions
+ final String expectedInst = isDisassembled ? spinWaitInst : getSpinWaitInstHex(spinWaitInst);
+ int foundCount = 0;
while (iter.hasNext()) {
! String line = iter.next().trim();
! if (line.startsWith(";; }")) {
! break;
+ }
+ if (!line.startsWith("0x")) {
+ continue;
}
+ int pos = line.indexOf(':');
+ if (pos == -1 || pos == line.length() - 1) {
+ continue;
+ }
+ line = line.substring(pos + 1).replaceAll("\\s", "");
+ if (line.startsWith(";")) {
+ continue;
+ }
+ // When code is disassembled, we have one instruction per line.
+ // Otherwise, there can be multiple hex instructions separated by '|'.
+ foundCount += (int)Arrays.stream(line.split("\\|"))
+ .takeWhile(i -> i.startsWith(expectedInst))
+ .count();
+ }
+
+ if (foundCount != expectedCount) {
+ throw new RuntimeException("Expected " + expectedCount + " " + spinWaitInst + " instructions. Found: " + foundCount);
}
}
static class Launcher {
public static void main(final String[] args) throws Exception {
int end = 20_000;
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