jdk-24/test/hotspot/jtreg/compiler/c2/irTests/TestMulNodeIdealization.java
2022-10-28 10:04:38 +00:00

73 lines
2.3 KiB
Java

/*
* Copyright (c) 2022, 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
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*/
package compiler.c2.irTests;
import jdk.test.lib.Asserts;
import compiler.lib.ir_framework.*;
import java.util.Random;
import jdk.test.lib.Utils;
/*
* @test
* @bug 8291336
* @summary Test that transformation of multiply-by-2 is appropriately turned into additions.
* @library /test/lib /
* @requires vm.compiler2.enabled
* @run driver compiler.c2.irTests.TestMulNodeIdealization
*/
public class TestMulNodeIdealization {
private static final Random RANDOM = Utils.getRandomInstance();
public static void main(String[] args) {
TestFramework.run();
}
@Test
@IR(failOn = {IRNode.MUL})
// Checks x * 2 -> x + x
public float testFloat(float x) {
return x * 2;
}
@Test
@IR(failOn = {IRNode.MUL})
// Checks x * 2 -> x + x
public double testDouble(double x) {
return x * 2;
}
@Run(test = "testFloat")
public void runTestFloat() {
float value = RANDOM.nextFloat();
float interpreterResult = value * 2;
Asserts.assertEQ(testFloat(value), interpreterResult);
}
@Run(test = "testDouble")
public void runTestDouble() {
double value = RANDOM.nextDouble();
double interpreterResult = value * 2;
Asserts.assertEQ(testDouble(value), interpreterResult);
}
}