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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
//===- ProfileCommon.h - Common profiling APIs. -----------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains data structures and functions common to both instrumented
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// and sample profiling.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_PROFILEDATA_PROFILECOMMON_H
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#define LLVM_PROFILEDATA_PROFILECOMMON_H
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/IR/ProfileSummary.h"
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#include "llvm/ProfileData/InstrProf.h"
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#include "llvm/Support/Error.h"
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#include <algorithm>
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#include <cstdint>
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#include <functional>
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#include <map>
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#include <memory>
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#include <vector>
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namespace llvm {
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namespace sampleprof {
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class FunctionSamples;
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} // end namespace sampleprof
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inline const char *getHotSectionPrefix() { return ".hot"; }
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inline const char *getUnlikelySectionPrefix() { return ".unlikely"; }
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class ProfileSummaryBuilder {
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private:
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/// We keep track of the number of times a count (block count or samples)
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/// appears in the profile. The map is kept sorted in the descending order of
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/// counts.
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std::map<uint64_t, uint32_t, std::greater<uint64_t>> CountFrequencies;
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std::vector<uint32_t> DetailedSummaryCutoffs;
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protected:
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SummaryEntryVector DetailedSummary;
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uint64_t TotalCount = 0;
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uint64_t MaxCount = 0;
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uint64_t MaxFunctionCount = 0;
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uint32_t NumCounts = 0;
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uint32_t NumFunctions = 0;
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ProfileSummaryBuilder(std::vector<uint32_t> Cutoffs)
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: DetailedSummaryCutoffs(std::move(Cutoffs)) {}
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~ProfileSummaryBuilder() = default;
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inline void addCount(uint64_t Count);
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void computeDetailedSummary();
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public:
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/// A vector of useful cutoff values for detailed summary.
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static const ArrayRef<uint32_t> DefaultCutoffs;
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};
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class InstrProfSummaryBuilder final : public ProfileSummaryBuilder {
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uint64_t MaxInternalBlockCount = 0;
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inline void addEntryCount(uint64_t Count);
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inline void addInternalCount(uint64_t Count);
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public:
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InstrProfSummaryBuilder(std::vector<uint32_t> Cutoffs)
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: ProfileSummaryBuilder(std::move(Cutoffs)) {}
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void addRecord(const InstrProfRecord &);
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std::unique_ptr<ProfileSummary> getSummary();
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};
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class SampleProfileSummaryBuilder final : public ProfileSummaryBuilder {
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public:
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SampleProfileSummaryBuilder(std::vector<uint32_t> Cutoffs)
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: ProfileSummaryBuilder(std::move(Cutoffs)) {}
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void addRecord(const sampleprof::FunctionSamples &FS);
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std::unique_ptr<ProfileSummary> getSummary();
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};
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/// This is called when a count is seen in the profile.
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void ProfileSummaryBuilder::addCount(uint64_t Count) {
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TotalCount += Count;
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if (Count > MaxCount)
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MaxCount = Count;
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NumCounts++;
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CountFrequencies[Count]++;
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}
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} // end namespace llvm
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#endif // LLVM_PROFILEDATA_PROFILECOMMON_H
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