src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/UnsafeVirtualizationTest.java
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package org.graalvm.compiler.core.test;
import org.graalvm.compiler.core.test.ea.EATestBase.TestClassInt;
import org.graalvm.compiler.nodes.StructuredGraph;
import org.graalvm.compiler.nodes.StructuredGraph.AllowAssumptions;
import org.graalvm.compiler.nodes.spi.CoreProviders;
import org.graalvm.compiler.options.OptionValues;
import org.graalvm.compiler.phases.common.CanonicalizerPhase;
import org.graalvm.compiler.virtual.phases.ea.PartialEscapePhase;
import org.junit.Test;
import jdk.vm.ci.code.InstalledCode;
import jdk.vm.ci.meta.ResolvedJavaMethod;
public class UnsafeVirtualizationTest extends GraalCompilerTest {
public static int unsafeSnippet1(double i1) {
TestClassInt a = new TestClassInt();
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
return UNSAFE.getInt(a, TestClassInt.fieldOffset1) + UNSAFE.getInt(a, TestClassInt.fieldOffset2);
}
public static long unsafeSnippet2a(int i1) {
TestClassInt a = new TestClassInt();
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
a.setFirstField(i1);
return UNSAFE.getLong(a, TestClassInt.fieldOffset1);
}
public static long unsafeSnippet2b(int i1) {
TestClassInt a = new TestClassInt();
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
a.setSecondField(i1);
return UNSAFE.getLong(a, TestClassInt.fieldOffset1);
}
public static long unsafeSnippet3a(int i1) {
TestClassInt a = new TestClassInt();
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
UNSAFE.putInt(a, TestClassInt.fieldOffset1, i1);
return UNSAFE.getLong(a, TestClassInt.fieldOffset1);
}
public static long unsafeSnippet3b(int i1) {
TestClassInt a = new TestClassInt();
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
UNSAFE.putInt(a, TestClassInt.fieldOffset2, i1);
return UNSAFE.getLong(a, TestClassInt.fieldOffset1);
}
public static int unsafeSnippet4(double i1) {
TestClassInt a = new TestClassInt();
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
UNSAFE.putDouble(a, TestClassInt.fieldOffset1, i1);
return UNSAFE.getInt(a, TestClassInt.fieldOffset1) + UNSAFE.getInt(a, TestClassInt.fieldOffset2);
}
@Test
public void testUnsafePEA01() {
testPartialEscapeReadElimination("unsafeSnippet1", false, 1.0);
testPartialEscapeReadElimination("unsafeSnippet1", true, 1.0);
}
@Test
public void testUnsafePEA02() {
testPartialEscapeReadElimination("unsafeSnippet2a", false, 1);
testPartialEscapeReadElimination("unsafeSnippet2a", true, 1);
testPartialEscapeReadElimination("unsafeSnippet2b", false, 1);
testPartialEscapeReadElimination("unsafeSnippet2b", true, 1);
}
@Test
public void testUnsafePEA03() {
testPartialEscapeReadElimination("unsafeSnippet3a", false, 1);
testPartialEscapeReadElimination("unsafeSnippet3a", true, 1);
testPartialEscapeReadElimination("unsafeSnippet3b", false, 1);
testPartialEscapeReadElimination("unsafeSnippet3b", true, 1);
}
@Test
public void testUnsafePEA04() {
testPartialEscapeReadElimination("unsafeSnippet4", false, 1.0);
testPartialEscapeReadElimination("unsafeSnippet4", true, 1.0);
}
public void testPartialEscapeReadElimination(String snippet, boolean canonicalizeBefore, Object... args) {
assert TestClassInt.fieldOffset1 % 8 == 0 : "First of the two int-fields must be 8-byte aligned";
ResolvedJavaMethod method = getResolvedJavaMethod(snippet);
StructuredGraph graph = parseEager(snippet, AllowAssumptions.NO);
OptionValues options = graph.getOptions();
CoreProviders context = getDefaultHighTierContext();
CanonicalizerPhase canonicalizer = createCanonicalizerPhase();
if (canonicalizeBefore) {
canonicalizer.apply(graph, context);
}
Result r = executeExpected(method, null, args);
new PartialEscapePhase(true, true, canonicalizer, null, options).apply(graph, context);
try {
InstalledCode code = getCode(method, graph);
Object result = code.executeVarargs(args);
assertEquals(r, new Result(result, null));
} catch (Throwable e) {
assertFalse(true, e.toString());
}
}
}