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