Mercurial > hg > graal-jvmci-8
view graal/com.oracle.graal.compiler.test/src/com/oracle/graal/compiler/test/CommonedConstantsTest.java @ 13348:b1712d10c8ef
moved loads of constants out of loops
author | Doug Simon <doug.simon@oracle.com> |
---|---|
date | Mon, 16 Dec 2013 13:23:33 +0100 |
parents | 4c3e527bf857 |
children | 86ec7f6f71b3 |
line wrap: on
line source
/* * Copyright (c) 2012, 2012, 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. */ package com.oracle.graal.compiler.test; import java.lang.reflect.*; import org.junit.*; import com.oracle.graal.api.meta.*; import com.oracle.graal.phases.common.*; /** * Tests any optimization that commons loads of non-inlineable constants. */ public class CommonedConstantsTest extends GraalCompilerTest { public static final String[] array = {"1", "2", null}; // A method where a constant is used on the normal and exception edge of a non-inlined call. // The dominating block of both usages is the block containing the call. public static Object test0Snippet(String[] arr, int i) { Object result = null; try { result = Array.get(arr, i); } catch (ArrayIndexOutOfBoundsException e) { result = array[0]; } if (result == null) { result = array[2]; } return result; } @Test public void test0() { // Ensure the exception path is profiled ResolvedJavaMethod javaMethod = getMetaAccess().lookupJavaMethod(getMethod("test0Snippet")); javaMethod.reprofile(); test0Snippet(array, array.length); test("test0Snippet", array, 0); test("test0Snippet", array, 2); test("test0Snippet", array, 3); test("test0Snippet", array, 1); } public static final char[] alphabet = "abcdefghijklmnopqrstuvwxyz".toCharArray(); static int noninlineLength(char[] s) { return s.length; } /** * A constant with usages before and after a non-inlined call. */ public static int test1Snippet(String s) { if (s == null) { return noninlineLength(alphabet) + 1; } char[] sChars = s.toCharArray(); int count = 0; for (int i = 0; i < alphabet.length && i < sChars.length; i++) { if (alphabet[i] == sChars[i]) { count++; } } return count; } @Test public void test1() { getSuites().getHighTier().findPhase(AbstractInliningPhase.class).remove(); test1Snippet(new String(alphabet)); test("test1Snippet", (Object) null); test("test1Snippet", "test1Snippet"); test("test1Snippet", ""); } /** * A constant with only usage in a loop. */ public static int test2Snippet(String s) { char[] sChars = s.toCharArray(); int count = 0; for (int i = 0; i < alphabet.length && i < sChars.length; i++) { if (alphabet[i] == sChars[i]) { count++; } } return count; } @Test public void test2() { assert getSuites().getHighTier().findPhase(AbstractInliningPhase.class).hasNext(); test2Snippet(new String(alphabet)); test("test2Snippet", (Object) null); test("test2Snippet", "test1Snippet"); test("test2Snippet", ""); } }