--- /dev/null 2013-07-08 15:00:27.000000000 -0700 +++ new/graal/com.oracle.graal.compiler.hsail.test/src/com/oracle/graal/compiler/hsail/test/FloatDivPrecisionTest.java 2013-07-08 15:00:26.000000000 -0700 @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2009, 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.hsail.test; + +import com.oracle.graal.compiler.hsail.test.infra.GraalKernelTester; +import org.junit.Test; + +/** + * This test (originally derived from a discrepancy seen in Mandel) showed a difference in the + * division answers when run on Bonaire hardware (compared to Java). + */ +public class FloatDivPrecisionTest extends GraalKernelTester { + + static final int width = 768; + static final int height = width; + static final int range = width * height; + @Result private float[] floatResult = new float[range]; + + public static void run(float[] floatOut, int gid) { + floatOut[gid] = gid / (float) width; + } + + @Override + public void runTest() { + dispatchMethodKernel(range, floatResult); + + } + + /** + * Allows subclass to override what FP equality means for this particular unit test. + * + */ + @Override + public boolean isEqualsFP(double first, double second) { + return Math.abs(first - second) == 0; + } + + @Test + public void test() { + testGeneratedHsail(); + } +}