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86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
//===-- ProfileSummary.h - Profile summary data structure. ------*- 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 defines the profile summary data structure.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_SUPPORT_PROFILE_SUMMARY_H
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#define LLVM_SUPPORT_PROFILE_SUMMARY_H
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#include <cstdint>
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#include <utility>
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#include <vector>
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#include "llvm/Support/Casting.h"
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namespace llvm {
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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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// The profile summary is one or more (Cutoff, MinCount, NumCounts) triplets.
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// The semantics of counts depend on the type of profile. For instrumentation
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// profile, counts are block counts and for sample profile, counts are
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// per-line samples. Given a target counts percentile, we compute the minimum
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// number of counts needed to reach this target and the minimum among these
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// counts.
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struct ProfileSummaryEntry {
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uint32_t Cutoff; ///< The required percentile of counts.
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uint64_t MinCount; ///< The minimum count for this percentile.
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uint64_t NumCounts; ///< Number of counts >= the minimum count.
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ProfileSummaryEntry(uint32_t TheCutoff, uint64_t TheMinCount,
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uint64_t TheNumCounts)
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: Cutoff(TheCutoff), MinCount(TheMinCount), NumCounts(TheNumCounts) {}
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};
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typedef std::vector<ProfileSummaryEntry> SummaryEntryVector;
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class ProfileSummary {
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public:
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enum Kind { PSK_Instr, PSK_Sample };
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private:
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const Kind PSK;
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static const char *KindStr[2];
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SummaryEntryVector DetailedSummary;
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uint64_t TotalCount, MaxCount, MaxInternalCount, MaxFunctionCount;
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uint32_t NumCounts, NumFunctions;
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/// \brief Return detailed summary as metadata.
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Metadata *getDetailedSummaryMD(LLVMContext &Context);
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public:
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static const int Scale = 1000000;
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ProfileSummary(Kind K, SummaryEntryVector DetailedSummary,
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uint64_t TotalCount, uint64_t MaxCount,
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uint64_t MaxInternalCount, uint64_t MaxFunctionCount,
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uint32_t NumCounts, uint32_t NumFunctions)
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: PSK(K), DetailedSummary(std::move(DetailedSummary)),
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TotalCount(TotalCount), MaxCount(MaxCount),
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MaxInternalCount(MaxInternalCount), MaxFunctionCount(MaxFunctionCount),
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NumCounts(NumCounts), NumFunctions(NumFunctions) {}
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Kind getKind() const { return PSK; }
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/// \brief Return summary information as metadata.
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Metadata *getMD(LLVMContext &Context);
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/// \brief Construct profile summary from metdata.
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static ProfileSummary *getFromMD(Metadata *MD);
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SummaryEntryVector &getDetailedSummary() { return DetailedSummary; }
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uint32_t getNumFunctions() { return NumFunctions; }
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uint64_t getMaxFunctionCount() { return MaxFunctionCount; }
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uint32_t getNumCounts() { return NumCounts; }
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uint64_t getTotalCount() { return TotalCount; }
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uint64_t getMaxCount() { return MaxCount; }
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uint64_t getMaxInternalCount() { return MaxInternalCount; }
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};
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} // end namespace llvm
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#endif
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