1 /*
   2  * Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 package org.graalvm.compiler.jtt.backend;
  24 
  25 import static org.graalvm.compiler.api.directives.GraalDirectives.LIKELY_PROBABILITY;
  26 import static org.graalvm.compiler.api.directives.GraalDirectives.injectBranchProbability;
  27 import static org.graalvm.compiler.core.common.GraalOptions.MaximumInliningSize;
  28 import java.lang.reflect.Method;
  29 
  30 import org.junit.Test;
  31 
  32 import org.graalvm.compiler.jtt.JTTTest;
  33 import org.graalvm.compiler.options.OptionValues;
  34 
  35 public class ConstantPhiTest extends JTTTest {
  36 
  37     public static int test(int i, int x) throws Throwable {
  38         int r;
  39         if (injectBranchProbability(LIKELY_PROBABILITY, i < 0)) {
  40             r = 42;
  41         } else {
  42             r = x;
  43         }
  44         destroyCallerSavedValues();
  45         return r;
  46     }
  47 
  48     protected static void destroyCallerSavedValues() throws Throwable {
  49         Class<ConstantPhiTest> c = ConstantPhiTest.class;
  50         Method m = c.getMethod("destroyCallerSavedValues0");
  51         m.invoke(null);
  52     }
  53 
  54     public static void destroyCallerSavedValues0() {
  55     }
  56 
  57     @Test
  58     @SuppressWarnings("try")
  59     public void run0() {
  60         runTest(new OptionValues(getInitialOptions(), MaximumInliningSize, -1), "test", 0, 0xDEADDEAD);
  61     }
  62 
  63     @Test
  64     @SuppressWarnings("try")
  65     public void run1() {
  66         runTest(new OptionValues(getInitialOptions(), MaximumInliningSize, -1), "test", -1, 0xDEADDEAD);
  67     }
  68 
  69     @Test
  70     @SuppressWarnings("try")
  71     public void run2() {
  72         runTest(new OptionValues(getInitialOptions(), MaximumInliningSize, -1), "test", 1, 0xDEADDEAD);
  73     }
  74 }