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/*
* Copyright (c) 2025, Arm Limited. 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 compiler.c2.irTests;
import compiler.lib.ir_framework.*;
import jdk.incubator.vector.Float16;
import static jdk.incubator.vector.Float16.*;
import jdk.test.lib.Asserts;
/*
* @test
* @bug 8338061
* @summary Test that Ideal transformations of ConvF2HF are being performed as expected.
* @requires (os.arch != "ppc64" & os.arch != "ppc64le") | vm.cpu.features ~= ".*darn.*"
* @modules jdk.incubator.vector
* @library /test/lib /
* @run driver compiler.c2.irTests.ConvF2HFIdealizationTests
*/
public class ConvF2HFIdealizationTests {
private short[] sin;
private short[] sout;
private static final int SIZE = 65504;
public ConvF2HFIdealizationTests() {
sin = new short[SIZE];
sout = new short[SIZE];
for (int i = 0; i < SIZE; i++) {
sin[i] = Float.floatToFloat16((float)i);
}
}
public static void main(String[] args) {
TestFramework.runWithFlags("--add-modules=jdk.incubator.vector", "-XX:-UseSuperWord");
}
@Test
@IR(counts = {IRNode.REINTERPRET_S2HF, ">=1", IRNode.REINTERPRET_HF2S, ">=1", IRNode.ADD_HF, ">=1" },
failOn = {IRNode.ADD_F, IRNode.CONV_HF2F, IRNode.CONV_F2HF},
applyIfCPUFeatureOr = {"avx512_fp16", "true", "zfh", "true"})
@IR(counts = {IRNode.REINTERPRET_S2HF, ">=1", IRNode.REINTERPRET_HF2S, ">=1", IRNode.ADD_HF, ">=1" },
failOn = {IRNode.ADD_F, IRNode.CONV_HF2F, IRNode.CONV_F2HF},
applyIfCPUFeatureAnd = {"fphp", "true", "asimdhp", "true"})
// Test pattern - ConvHF2F -> AddF -> ConvF2HF is optimized to ReinterpretS2HF -> AddHF -> ReinterpretHF2S
public void test1() {
for (int i = 0; i < SIZE; i++) {
sout[i] = Float.floatToFloat16(Float.float16ToFloat(sin[i]) + Float.float16ToFloat(sin[i]));
}
}
@Check(test="test1")
public void checkResult() {
for (int i = 0; i < SIZE; i++) {
short expected = Float16.float16ToRawShortBits(Float16.add(Float16.shortBitsToFloat16(sin[i]), Float16.shortBitsToFloat16(sin[i])));
if (expected != sout[i]) {
throw new RuntimeException("Invalid result: sout[" + i + "] = " + sout[i] + " != " + expected);
}
}
}
}
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