| 1 | //===-- MemorySizeDistributions ---------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // Memory functions operate on buffers of certain sizes. This file provides |
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| 10 | // probability distributions observed at runtime for a set of applications. |
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| 11 | // These distributions are used to benchmark and compare memory functions |
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| 12 | // implementations. |
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| 13 | // |
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| 14 | //===----------------------------------------------------------------------===// |
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| 15 | |
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| 16 | #ifndef LLVM_LIBC_BENCHMARKS_MEMORYSIZEDISTRIBUTIONS_H |
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| 17 | #define LLVM_LIBC_BENCHMARKS_MEMORYSIZEDISTRIBUTIONS_H |
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| 18 | |
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| 19 | #include <llvm/ADT/ArrayRef.h> |
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| 20 | #include <llvm/ADT/StringRef.h> |
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| 21 | |
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| 22 | namespace llvm { |
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| 23 | namespace libc_benchmarks { |
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| 24 | |
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| 25 | /// A simple POD exposing caracteristics of a memory function size |
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| 26 | /// distributions. The underlying data is immutable. |
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| 27 | struct MemorySizeDistribution { |
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| 28 | StringRef Name; // The name of the distribution. |
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| 29 | ArrayRef<double> Probabilities; // Size indexed array of probabilities. |
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| 30 | }; |
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| 31 | |
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| 32 | /// Returns a list of memmove size distributions. |
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| 33 | ArrayRef<MemorySizeDistribution> getMemmoveSizeDistributions(); |
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| 34 | |
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| 35 | /// Returns a list of memcpy size distributions. |
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| 36 | ArrayRef<MemorySizeDistribution> getMemcpySizeDistributions(); |
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| 37 | |
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| 38 | /// Returns a list of memset size distributions. |
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| 39 | ArrayRef<MemorySizeDistribution> getMemsetSizeDistributions(); |
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| 40 | |
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| 41 | /// Returns a list of memcmp size distributions. |
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| 42 | ArrayRef<MemorySizeDistribution> getMemcmpSizeDistributions(); |
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| 43 | |
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| 44 | /// Returns the first MemorySizeDistribution from Distributions with the |
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| 45 | /// specified Name. |
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| 46 | MemorySizeDistribution |
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| 47 | getDistributionOrDie(ArrayRef<MemorySizeDistribution> Distributions, |
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| 48 | StringRef Name); |
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| 49 | |
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| 50 | } // namespace libc_benchmarks |
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| 51 | } // namespace llvm |
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| 52 | |
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| 53 | #endif // LLVM_LIBC_BENCHMARKS_MEMORYSIZEDISTRIBUTIONS_H |
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| 54 | |
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