hotspot/test/compiler/tiered/ConstantGettersTransitionsTest.java
changeset 28194 8c6c124a108b
child 29678 dd2f3932c21e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/tiered/ConstantGettersTransitionsTest.java	Sat Dec 13 01:24:07 2014 +0300
@@ -0,0 +1,193 @@
+/*
+ * 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 java.lang.reflect.Executable;
+import java.util.concurrent.Callable;
+
+/**
+ * @test ConstantGettersTransitionsTest
+ * @library /testlibrary /../../test/lib /compiler/whitebox
+ * @build TransitionsTestExecutor ConstantGettersTransitionsTest
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox sun.hotspot.WhiteBox$WhiteBoxPermission
+ * @run main/othervm/timeout=240 -Xmixed -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
+ *                   -XX:+WhiteBoxAPI -XX:+TieredCompilation
+ *                   -XX:CompileCommand=compileonly,ConstantGettersTestCase$TrivialMethods::*
+ *                   TransitionsTestExecutor ConstantGettersTransitionsTest
+ * @summary Test the correctness of compilation level transitions for constant getters methods
+ */
+public class ConstantGettersTransitionsTest extends LevelTransitionTest {
+    public static void main(String[] args) {
+        assert (!CompilerWhiteBoxTest.skipOnTieredCompilation(false));
+
+        // run test cases
+        for (TestCase testCase : ConstantGettersTestCase.values()) {
+            new ConstantGettersTransitionsTest(testCase).runTest();
+        }
+    }
+
+    @Override
+    protected boolean isTrivial() {
+        return true;
+    }
+
+    private ConstantGettersTransitionsTest(TestCase testCase) {
+        super(testCase);
+    }
+}
+
+enum ConstantGettersTestCase implements CompilerWhiteBoxTest.TestCase {
+    ICONST_M1,
+    ICONST_0,
+    ICONST_1,
+    ICONST_2,
+    ICONST_3,
+    ICONST_4,
+    ICONST_5,
+    LCONST_0,
+    LCONST_1,
+    FCONST_0,
+    FCONST_1,
+    FCONST_2,
+    DCONST_0,
+    DCONST_1,
+    DCONST_W,
+    BYTE,
+    SHORT,
+    CHAR;
+
+    private final Executable executable;
+    private final Callable<Integer> callable;
+
+    @Override
+    public Executable getExecutable() {
+        return executable;
+    }
+
+    @Override
+    public Callable<Integer> getCallable() {
+        return callable;
+    }
+
+    @Override
+    public boolean isOsr() {
+        return false;
+    }
+
+    private ConstantGettersTestCase() {
+        String name = "make" + this.name();
+        this.executable = LevelTransitionTest.Helper.getMethod(TrivialMethods.class, name);
+        this.callable = LevelTransitionTest.Helper.getCallable(new TrivialMethods(), name);
+    }
+
+    /**
+     * Contains methods that load constants with certain types of bytecodes
+     * See JVMS 2.11.2. Load and Store Instructions
+     * Note that it doesn't have a method for ldc_w instruction
+     */
+    private static class TrivialMethods {
+        public static int makeICONST_M1() {
+            return -1;
+        }
+
+        public static int makeICONST_0() {
+            return 0;
+        }
+
+        public static int makeICONST_1() {
+            return 1;
+        }
+
+        public static int makeICONST_2() {
+            return 2;
+        }
+
+        public static int makeICONST_3() {
+            return 3;
+        }
+
+        public static int makeICONST_4() {
+            return 4;
+        }
+
+        public static int makeICONST_5() {
+            return 5;
+        }
+
+        public static long makeLCONST_0() {
+            return 0L;
+        }
+
+        public static long makeLCONST_1() {
+            return 1L;
+        }
+
+        public static float makeFCONST_0() {
+            return 0F;
+        }
+
+        public static float makeFCONST_1() {
+            return 1F;
+        }
+
+        public static float makeFCONST_2() {
+            return 2F;
+        }
+
+        public static double makeDCONST_0() {
+            return 0D;
+        }
+
+        public static double makeDCONST_1() {
+            return 1D;
+        }
+
+        public static double makeDCONST_W() {
+            // ldc2_w
+            return Double.MAX_VALUE;
+        }
+
+        public static Object makeOBJECT() {
+            // aconst_null
+            return null;
+        }
+
+        public static byte makeBYTE() {
+            // bipush
+            return (byte) 0x7F;
+        }
+
+        public static short makeSHORT() {
+            // sipush
+            return (short) 0x7FFF;
+        }
+
+        public static char makeCHAR() {
+            // ldc
+            return (char) 0xFFFF;
+        }
+
+        public static boolean makeBOOLEAN() {
+            return true;
+        }
+    }
+}