Mercurial > hg > graal-compiler
view graal/com.oracle.graal.compiler.hsail.test/src/com/oracle/graal/compiler/hsail/test/StringSwitchTest.java @ 16819:8d374faacb7e
Truffle-DSL: no need to generate code the for type system anymore.
author | Christian Humer <christian.humer@gmail.com> |
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date | Wed, 13 Aug 2014 18:06:18 +0200 |
parents | 976c6cb2bf69 |
children |
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/* * Copyright (c) 2009, 2013, 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.hsail.test; import org.junit.*; import com.oracle.graal.compiler.hsail.test.infra.GraalKernelTester; /** * Tests switch statement with String literal keys. * * Note: In Java bytecode, this example reduces to a LOOKUPSWITCH over int keys because the Java * source compiler generates a call to String.hashcode( ) to convert to int values. * * The HSAIL code generated for this example is a series of cascading compare and branch * instructions for each case of the switch. * * These instruction have the following form: * * * //Check whether the key matches the key constant of the case. Store the result of the compare (0 * or 1) in the control register c0. * * cmp_eq $c0 <source register>, <key constant for case statement> * * //Branch to the corresponding label of that case if there's a match. * * cbr $c0 <branch target for that case> */ public class StringSwitchTest extends GraalKernelTester { static final int num = 40; // Output array storing the results of the operations. @Result protected int[] outArray = new int[num]; // Array of Strings String[] names = {"0-42L", "0-43-", "Mazda", "Nissan", "Chevrolet", "Porsche", "Ford Focus", "Volvo", "Cadillac", "BMW", "Indy Car", "Police Car", "Lexus", "Datsun", "Saab", "Volkswagen", "Honda Civic", "Jeeo Wrangler", "Toyota", "Mustang", "Chrysler", "Subaru"}; /** * The static "kernel" method we will be testing. This method performs a switch statement over a * String literal key. * * @param out the output array * @param ina the input array of String literal keys * @param gid the parameter used to index into the input and output arrays */ public static void run(int[] out, String[] ina, int gid) { switch (ina[gid]) { case "Mazda": out[gid] = 1; break; case "Nissan": out[gid] = 2; break; case "Chevrolet": out[gid] = 3; break; case "Porsche": out[gid] = 4; break; case "Jeep Wrangler": out[gid] = 5; break; case "Toyota": out[gid] = 6; break; case "0-42L": out[gid] = 890; break; case "0-43-": out[gid] = 995; break; case "Chrysler": out[gid] = 7; break; case "Mitsubishi": out[gid] = 8; break; case "Ford Focus": out[gid] = 9; break; case "Volvo": out[gid] = 10; break; case "Subaru": out[gid] = 11; break; case "BMW": out[gid] = 12; break; case "Indy Car": out[gid] = 13; break; case "Police Car": out[gid] = 14; break; } } @Test public void test() { super.testGeneratedHsail(); } /** * Initializes the input and output arrays passed to the run routine. * * @param in the input array */ void setupArrays(String[] in) { for (int i = 0; i < num; i++) { // fill the input array with Strings. in[i] = names[i % names.length]; outArray[i] = 0; } } /** * Dispatches the HSAIL kernel for this test case. */ @Override public void runTest() { String[] inArray = new String[num]; setupArrays(inArray); dispatchMethodKernel(num, outArray, inArray); } }