8080289: Intermediate writes in a loop not eliminated by optimizer
Summary: Move Stores out of loop (after or before) when possible
Reviewed-by: kvn, vlivanov
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/*
* @test
* @library /testlibrary
* @summary Proof of concept test for RedefineClassHelper
* @modules java.compiler
* java.instrument
* jdk.jartool/sun.tools.jar
* @build RedefineClassHelper
* @run main RedefineClassHelper
* @run main/othervm -javaagent:redefineagent.jar RedefineClassTest
*/
import static jdk.test.lib.Asserts.*;
import jdk.test.lib.*;
/*
* Proof of concept test for the test utility class RedefineClassHelper
*/
public class RedefineClassTest {
public static String newClass = "class RedefineClassTest$A { public int Method() { return 2; } }";
public static void main(String[] args) throws Exception {
A a = new A();
assertTrue(a.Method() == 1);
RedefineClassHelper.redefineClass(A.class, newClass);
assertTrue(a.Method() == 2);
}
static class A {
public int Method() {
return 1;
}
}
}