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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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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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_PROFILE_COMMON_H
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#define LLVM_PROFILEDATA_PROFILE_COMMON_H
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#include <cstdint>
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#include <functional>
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#include <map>
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#include <utility>
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#include <vector>
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#include "llvm/IR/ProfileSummary.h"
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#include "llvm/Support/Error.h"
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#include "llvm/ADT/ArrayRef.h"
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namespace llvm {
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class Function;
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namespace IndexedInstrProf {
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struct Summary;
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}
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namespace sampleprof {
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class FunctionSamples;
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}
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struct InstrProfRecord;
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class LLVMContext;
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class Metadata;
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class MDTuple;
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class MDNode;
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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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ProfileSummaryBuilder(std::vector<uint32_t> Cutoffs)
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: DetailedSummaryCutoffs(std::move(Cutoffs)) {}
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inline void addCount(uint64_t Count);
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~ProfileSummaryBuilder() = default;
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void computeDetailedSummary();
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uint64_t TotalCount = 0, MaxCount = 0, MaxFunctionCount = 0;
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uint32_t NumCounts = 0, NumFunctions = 0;
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public:
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/// \brief 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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void addRecord(const sampleprof::FunctionSamples &FS);
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SampleProfileSummaryBuilder(std::vector<uint32_t> Cutoffs)
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: ProfileSummaryBuilder(std::move(Cutoffs)) {}
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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
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