russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
75 lines
2.6 KiB
Java
75 lines
2.6 KiB
Java
/*
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* Copyright (c) 2025, Arm Limited. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.c2.irTests;
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import compiler.lib.ir_framework.*;
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import jdk.incubator.vector.Float16;
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import static jdk.incubator.vector.Float16.*;
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import java.util.Random;
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import jdk.test.lib.Asserts;
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/*
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* @test
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* @bug 8336406
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* @summary Test that Ideal transformations of MulHFNode are being performed as expected.
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* @modules jdk.incubator.vector
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* @library /test/lib /
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* @run driver compiler.c2.irTests.MulHFNodeIdealizationTests
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*/
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public class MulHFNodeIdealizationTests {
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private Float16 src;
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private Float16 dst;
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private Random rng;
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public static void main(String[] args) {
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TestFramework.runWithFlags("--add-modules=jdk.incubator.vector");
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}
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public MulHFNodeIdealizationTests() {
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rng = new Random(25);
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src = valueOf(rng.nextFloat());
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dst = valueOf(rng.nextFloat());
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}
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@Test
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@Warmup(value = 10000)
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@IR(counts = {IRNode.ADD_HF, "1"},
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applyIfCPUFeatureOr = {"avx512_fp16", "true", "zfh", "true"},
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failOn = {IRNode.MUL_HF})
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@IR(counts = {IRNode.ADD_HF, "1"},
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applyIfCPUFeatureAnd = {"fphp", "true", "asimdhp", "true"},
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failOn = {IRNode.MUL_HF})
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// Test if x * 2 is optimized to x + x
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public void test1() {
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dst = multiply(src, valueOf(2.0f));
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}
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@Check(test="test1")
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public void checkTest1() {
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Float16 expected = valueOf(src.floatValue() * 2.0f);
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if (float16ToRawShortBits(expected) != float16ToRawShortBits(dst)) {
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throw new RuntimeException("Invalid result: dst = " + float16ToRawShortBits(dst) + " != " + float16ToRawShortBits(expected));
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}
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}
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}
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