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Diffstat (limited to 'benchmarks/src/benchmarks/regression/IntConstantMultiplicationBenchmark.java')
-rw-r--r-- | benchmarks/src/benchmarks/regression/IntConstantMultiplicationBenchmark.java | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/benchmarks/src/benchmarks/regression/IntConstantMultiplicationBenchmark.java b/benchmarks/src/benchmarks/regression/IntConstantMultiplicationBenchmark.java new file mode 100644 index 0000000..ca1349c --- /dev/null +++ b/benchmarks/src/benchmarks/regression/IntConstantMultiplicationBenchmark.java @@ -0,0 +1,103 @@ +/* + * Copyright (C) 2010 Google Inc. + * + * 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 benchmarks.regression; + +import com.google.caliper.Param; +import com.google.caliper.Runner; +import com.google.caliper.SimpleBenchmark; + +public class IntConstantMultiplicationBenchmark extends SimpleBenchmark { + public int timeMultiplyIntByConstant6(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 6; + } + return result; + } + public int timeMultiplyIntByConstant7(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 7; + } + return result; + } + public int timeMultiplyIntByConstant8(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 8; + } + return result; + } + public int timeMultiplyIntByConstant8_Shift(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result <<= 3; + } + return result; + } + public int timeMultiplyIntByConstant10(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 10; + } + return result; + } + public int timeMultiplyIntByConstant10_Shift(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result = (result + (result << 2)) << 1; + } + return result; + } + public int timeMultiplyIntByConstant2047(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 2047; + } + return result; + } + public int timeMultiplyIntByConstant2048(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 2048; + } + return result; + } + public int timeMultiplyIntByConstant2049(int reps) { + int result = 1; + for (int i = 0; i < reps; ++i) { + result *= 2049; + } + return result; + } + public int timeMultiplyIntByVariable10(int reps) { + int result = 1; + int factor = 10; + for (int i = 0; i < reps; ++i) { + result *= factor; + } + return result; + } + public int timeMultiplyIntByVariable8(int reps) { + int result = 1; + int factor = 8; + for (int i = 0; i < reps; ++i) { + result *= factor; + } + return result; + } +} |