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/*
* Copyright (c) 2014, 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.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/
import com.oracle.java.testlibrary.Asserts;
import com.oracle.java.testlibrary.Platform;
import com.oracle.java.testlibrary.Utils;
import sun.hotspot.code.NMethod;
import sun.hotspot.cpuinfo.CPUInfo;
import java.lang.reflect.Executable;
import java.lang.reflect.Method;
import java.util.concurrent.Callable;
import java.util.function.Function;
public class BmiIntrinsicBase extends CompilerWhiteBoxTest {
protected BmiIntrinsicBase(BmiTestCase testCase) {
super(testCase);
}
public static void verifyTestCase(Function<Method, BmiTestCase> constructor, Method... methods) throws Exception {
for (Method method : methods) {
new BmiIntrinsicBase(constructor.apply(method)).test();
}
}
@Override
protected void test() throws Exception {
BmiTestCase bmiTestCase = (BmiTestCase) testCase;
if (!(Platform.isX86() || Platform.isX64())) {
System.out.println("Unsupported platform, test SKIPPED");
return;
}
if (!Platform.isServer()) {
System.out.println("Not server VM, test SKIPPED");
return;
}
if (!CPUInfo.hasFeature(bmiTestCase.getCpuFlag())) {
System.out.println("Unsupported hardware, no required CPU flag " + bmiTestCase.getCpuFlag() + " , test SKIPPED");
return;
}
if (!Boolean.valueOf(getVMOption(bmiTestCase.getVMFlag()))) {
System.out.println("VM flag " + bmiTestCase.getVMFlag() + " disabled, test SKIPPED");
return;
}
System.out.println(testCase.name());
switch (MODE) {
case "compiled mode":
case "mixed mode":
if (TIERED_COMPILATION && TIERED_STOP_AT_LEVEL != CompilerWhiteBoxTest.COMP_LEVEL_MAX) {
System.out.println("TieredStopAtLevel value (" + TIERED_STOP_AT_LEVEL + ") is too low, test SKIPPED");
return;
}
deoptimize();
compileAtLevelAndCheck(CompilerWhiteBoxTest.COMP_LEVEL_MAX);
break;
case "interpreted mode": // test is not applicable in this mode;
System.err.println("Warning: This test is not applicable in mode: " + MODE);
break;
default:
throw new AssertionError("Test bug, unknown VM mode: " + MODE);
}
}
protected void compileAtLevelAndCheck(int level) {
WHITE_BOX.enqueueMethodForCompilation(method, level);
waitBackgroundCompilation();
checkCompilation(method, level);
checkEmittedCode(method);
}
protected void checkCompilation(Executable executable, int level) {
if (!WHITE_BOX.isMethodCompiled(executable)) {
throw new AssertionError("Test bug, expected compilation (level): " + level + ", but not compiled" + WHITE_BOX.isMethodCompilable(executable, level));
}
final int compilationLevel = WHITE_BOX.getMethodCompilationLevel(executable);
if (compilationLevel != level) {
throw new AssertionError("Test bug, expected compilation (level): " + level + ", but level: " + compilationLevel);
}
}
protected void checkEmittedCode(Executable executable) {
final byte[] nativeCode = NMethod.get(executable, false).insts;
if (!((BmiTestCase) testCase).verifyPositive(nativeCode)) {
throw new AssertionError(testCase.name() + "CPU instructions expected not found: " + Utils.toHexString(nativeCode));
} else {
System.out.println("CPU instructions found, PASSED");
}
}
abstract static class BmiTestCase implements CompilerWhiteBoxTest.TestCase {
private final Method method;
protected byte[] instrMask;
protected byte[] instrPattern;
protected boolean isLongOperation;
public BmiTestCase(Method method) {
this.method = method;
}
@Override
public String name() {
return method.toGenericString();
}
@Override
public Executable getExecutable() {
return method;
}
@Override
public Callable<Integer> getCallable() {
return null;
}
@Override
public boolean isOsr() {
return false;
}
protected int countCpuInstructions(byte[] nativeCode) {
int count = 0;
int patternSize = Math.min(instrMask.length, instrPattern.length);
boolean found;
Asserts.assertGreaterThan(patternSize, 0);
for (int i = 0, n = nativeCode.length - patternSize; i < n; i++) {
found = true;
for (int j = 0; j < patternSize; j++) {
if ((nativeCode[i + j] & instrMask[j]) != instrPattern[j]) {
found = false;
break;
}
}
if (found) {
++count;
i += patternSize - 1;
}
}
return count;
}
public boolean verifyPositive(byte[] nativeCode) {
final int cnt = countCpuInstructions(nativeCode);
if (Platform.isX86()) {
return cnt >= (isLongOperation ? 2 : 1);
} else {
return Platform.isX64() && cnt >= 1;
}
}
protected String getCpuFlag() {
return "bmi1";
}
protected String getVMFlag() {
return "UseBMI1Instructions";
}
}
}
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