| /* |
| * Copyright (C) 2022 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.libcore.regression; |
| |
| import android.perftests.utils.BenchmarkState; |
| import android.perftests.utils.PerfStatusReporter; |
| import android.test.suitebuilder.annotation.LargeTest; |
| |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| @RunWith(AndroidJUnit4.class) |
| @LargeTest |
| public class IntConstantMultiplicationPerfTest { |
| @Rule public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter(); |
| |
| @Test |
| public void timeMultiplyIntByConstant6() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 6; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant7() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 7; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant8() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 8; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant8_Shift() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result <<= 3; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant10() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 10; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant10_Shift() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result = (result + (result << 2)) << 1; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant2047() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 2047; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant2048() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 2048; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByConstant2049() { |
| int result = 1; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= 2049; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByVariable10() { |
| int result = 1; |
| int factor = 10; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= factor; |
| } |
| } |
| |
| @Test |
| public void timeMultiplyIntByVariable8() { |
| int result = 1; |
| int factor = 8; |
| BenchmarkState state = mPerfStatusReporter.getBenchmarkState(); |
| while (state.keepRunning()) { |
| result *= factor; |
| } |
| } |
| } |