intrinsic _getInt nullifies the unsafe access

gistfile1.txt

$cat TestHaltNode.java
import jdk.internal.misc.Unsafe;

public class TestHaltNode {
    static final Unsafe UNSAFE = Unsafe.getUnsafe();
    static boolean f;
    static int address;

    private static int getAddress() {
        return address;
    }

    public static void test3() {
        if (f) {
            UNSAFE.getInt(getAddress());
        }
    }

    public static void test4() {
        if (f) {
            UNSAFE.putInt(getAddress(), 0);
        }
    }

    public static void stringCompareTo(String a, String b) {
    }

    static public void main(String[] args) {
        test3();

        f = true;
        test3();
    }
}

cat t.sh
javac --add-exports java.base/jdk.internal.misc=ALL-UNNAMED TestHaltNode.java
java -XX:+UnlockDiagnosticVMOptions $* -XX:CompileCommand=compileonly,TestHaltNode::* --add-exports java.base/jdk.internal.misc=ALL-UNNAMED -XX:-TieredCompilation -XX:+PrintCompilation -XX:+PrintInlining -cp . TestHaltNode |& grep -v "### Excluding compile" |grep -v "made not compilable on level" | grep -v "### Excluding generation of native wrapper"

if you invoke t.sh with -Xint or -Xcomp -XX:DisableIntrinis=_getInt, the hotspot will crash. 
if you invoke t.sh with -Xcomp, because UNSAFE.getInt will be treated as intrinsic _getInt, nothing will happen. We expect to hit a HaltNode.